The Cidr Report

  • To: nanog at merit dot edu
  • Subject: The Cidr Report
  • From: Tony Bates <tbates at cisco dot com>
  • Date: Fri, 24 Oct 1997 12:00:01 -0700
  • Cc: tbates at cisco dot com, eof-list at ripe dot net, apops at apnic dot net, ripe-list at ripe dot net
  • Sender: owner-apops@apnic.net
    • 
      This is an auto-generated mail on Fri Oct 24 12:00:00 PDT 1997
      It is not checked before it leaves my workstation.  However, hopefully 
      you will find this report interesting and will take the time to look 
      through this to see if you can improve the amount of aggregation you 
      perform.
      
      The report is split into sections:
      
         0) General Status
         
            List the route table history for the last week, list any possibly
            bogus routes seen and give some status on ASes.
      
         1) Gains by aggregating at the origin AS level
      
            This lists the "Top 30" players who if they decided to aggregate
            their announced classful prefixes at the origin AS level could 
            make a significant difference in the reduction of the current 
            size of the Internet routing table. This calculation does not 
            take into account the inclusion of holes when forming an aggregate
            so it is possible even larger reduction should be possible.
      
         2) Weekly Delta
      
            A summary of the last weeks changes in terms of withdrawn and
            added routes. Please note that this is only a snapshot but does 
            give some indication of ASes participating in CIDR. Clearly,
            it is generally a good thing to see a large amont of withdrawls.
      
         3) Interesting aggregates
      
            Interesting here means not an aggregate made as a set of 
            classful routes.      
      
      Thanks to xara.net for giving me access to their routing tables once a
      day. 
      
      Please send any comments about this report directly to me.
      
      Check http://www.employees.org/~tbates/cidr-report.html for a daily
      update of this report.
      
      
      
      ------------------------------------------------------------------------------
      
                              CIDR REPORT for 24Oct97
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      171097	46329
      181097	46308
      191097	46343
      201097	46215
      211097	46566
      221097	46192
      231097	46291
      241097	46322
      
      Check http://www.employees.org/~tbates/cidr.plot.html for a plot
      of the table history.
      
      
      Possible Bogus Routes
      ---------------------
      
      
      AS Summary
      ----------
      
      Number of ASes in routing system:                 2794
      
      Number of ASes announcing only one prefix:        1261 (669 cidr, 592 classful)
      
      Largest number of  cidr routes:                    453 announced by AS3561
      Largest number of classful routes:                 946 announced by AS3561
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 24Oct97 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS2493       816      466      350   42.9%   iSTAR Internet, Inc.
      AS3602       529      307      222   42.0%   Sprint Canada Inc.
      AS174        853      660      193   22.6%   Performance Systems International
      AS4293       367      175      192   52.3%   IMCI
      AS816        506      352      154   30.4%   UUNET Canada (ASN-UUNETCA-AS4)
      AS719        687      559      128   18.6%   LANLINK autonomous system
      AS839        124       27       97   78.2%   North West Territories Regional N
      AS5769       169       75       94   55.6%   Videotron Telecom Ltee
      AS701        931      854       77    8.3%   Alternet
      AS2704       257      180       77   30.0%   HOOKUP-NET-A
      AS1967       137       65       72   52.6%   Middle East Technical University 
      AS2048       158       90       68   43.0%   LaNet
      AS3804       201      137       64   31.8%   Bell Solutions
      AS4648       207      147       60   29.0%   NZIX 2
      AS1239       619      560       59    9.5%   SprintLink Backbone
      AS5668        92       34       58   63.0%   Century Telephone Inc.
      AS1221       388      332       56   14.4%   AARNET-AS
      AS72          84       30       54   64.3%   Schlumberger Information Network
      AS3464       117       63       54   46.2%   ASC-NET
      AS1          893      840       53    5.9%   BBNPLANET
      AS549        215      165       50   23.3%   ONet Backbone
      AS4747       123       75       48   39.0%   Taiwan Telecommunication Network 
      AS4763       112       65       47   42.0%   Telstra New Zealand
      AS271        107       60       47   43.9%   BCnet Backbone
      AS3561       946      900       46    4.9%   MCI
      AS7545       119       76       43   36.1%   TPG Internet Pty Ltd
      AS2711        96       57       39   40.6%   SUNBELT-AS
      AS6412        48       12       36   75.0%   Gulfnet International
      AS4755        63       27       36   57.1%   Videsh Sanchar Nigam Ltd. India
      AS1691       158      122       36   22.8%   BCTEL
      
       --- 23Oct97 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS2493       842      481      361   42.9%   UNKNOWN
      AS174        938      716      222   23.7%   UNKNOWN
      AS3602       523      308      215   41.1%   UNKNOWN
      AS4293       363      176      187   51.5%   UNKNOWN
      AS816        500      350      150   30.0%   UNKNOWN
      AS719        688      560      128   18.6%   UNKNOWN
      AS839        124       27       97   78.2%   North West Territories Regional N
      AS5769       168       74       94   56.0%   UNKNOWN
      AS701        934      855       79    8.5%   UNKNOWN
      AS2704       255      180       75   29.4%   UNKNOWN
      AS1967       135       64       71   52.6%   Middle East Technical University 
      AS2048       158       92       66   41.8%   UNKNOWN
      AS5668        92       31       61   66.3%   Century Telephone Inc.
      AS4648       208      148       60   28.8%   UNKNOWN
      AS1239       614      555       59    9.6%   UNKNOWN
      AS1221       387      331       56   14.5%   UNKNOWN
      AS72          83       29       54   65.1%   Schlumberger Information Network
      AS3464       117       63       54   46.2%   ASC-NET
      AS1          894      841       53    5.9%   UNKNOWN
      AS549        221      170       51   23.1%   UNKNOWN
      AS4747       122       74       48   39.3%   Taiwan Telecommunication Network 
      AS3561       953      905       48    5.0%   UNKNOWN
      AS4763       112       65       47   42.0%   Telstra New Zealand
      AS271        107       60       47   43.9%   BCnet Backbone
      AS721        355      311       44   12.4%   UNKNOWN
      AS7545       120       78       42   35.0%   TPG Internet Pty Ltd
      AS2711        96       57       39   40.6%   SUNBELT-AS
      AS6412        48       12       36   75.0%   Gulfnet International
      AS4755        62       26       36   58.1%   Videsh Sanchar Nigam Ltd. India
      AS1691       158      122       36   22.8%   BCTEL
      
       --- 22Oct97 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS174        936      713      223   23.8%   Performance Systems International
      AS2493       477      335      142   29.8%   iSTAR Internet, Inc.
      AS3602       368      242      126   34.2%   Sprint Canada Inc.
      AS816        438      315      123   28.1%   UUNET Canada (ASN-UUNETCA-AS4)
      AS4293       227      128       99   43.6%   IMCI
      AS839        123       31       92   74.8%   CANET-ASN
      AS2704       247      175       72   29.1%   HOOKUP-NET-A
      AS2048       160       91       69   43.1%   LaNet
      AS1221       387      331       56   14.5%   AARNET-AS
      AS72          83       29       54   65.1%   Schlumberger Information Network
      AS701        856      803       53    6.2%   Alternet
      AS1          895      842       53    5.9%   BBNPLANET
      AS3464       117       66       51   43.6%   ASC-NET
      AS4763       104       60       44   42.3%   Telstra New Zealand
      AS4747       100       56       44   44.0%   Taiwan Telecommunication Network 
      AS719        499      459       40    8.0%   LANLINK autonomous system
      AS271         88       54       34   38.6%   BCNET-AS
      AS4200       103       76       27   26.2%   AGIS (Apex Global Information Ser
      AS278         78       52       26   33.3%   Academic Network of Mexico, UNAM.
      AS3404        79       54       25   31.6%   COLORADOCOOP
      AS1761        48       23       25   52.1%   Texas Dept. of Information Resour
      AS1239       511      486       25    4.9%   SprintLink Backbone
      AS3566        42       19       23   54.8%   JRIVER-LINK
      AS2764       366      343       23    6.3%   connect.com.au pty ltd
      AS7051        31        9       22   71.0%   Secure Network Systems
      AS5381        58       36       22   37.9%   PowerTech Information Systems AS
      AS6392        42       21       21   50.0%   MidWest Communications, Inc.
      AS5589        58       37       21   36.2%   Telecom Finland iNET, Belgium
      AS2907       176      155       21   11.9%   SINET
      AS4057        40       20       20   50.0%   I2020
      
       --- 21Oct97 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS2493       837      483      354   42.3%   iSTAR Internet, Inc.
      AS174        931      710      221   23.7%   Performance Systems International
      AS3602       524      310      214   40.8%   Sprint Canada Inc.
      AS4293       363      176      187   51.5%   IMCI
      AS816        498      347      151   30.3%   UUNET Canada (ASN-UUNETCA-AS4)
      AS839        124       27       97   78.2%   North West Territories Regional N
      AS5769       166       77       89   53.6%   Videotron Telecom Ltee
      AS701        988      901       87    8.8%   Alternet
      AS2704       255      180       75   29.4%   HOOKUP-NET-A
      AS1967       135       64       71   52.6%   Middle East Technical University 
      AS2048       160       91       69   43.1%   LaNet
      AS4648       206      146       60   29.1%   NZIX 2
      AS1239       617      558       59    9.6%   SprintLink Backbone
      AS1221       387      331       56   14.5%   AARNET-AS
      AS72          83       29       54   65.1%   Schlumberger Information Network
      AS3464       117       63       54   46.2%   ASC-NET
      AS1          895      842       53    5.9%   BBNPLANET
      AS4747       122       74       48   39.3%   Taiwan Telecommunication Network 
      AS4763       112       65       47   42.0%   Telstra New Zealand
      AS3561       946      899       47    5.0%   MCI
      AS271        100       55       45   45.0%   BCnet Backbone
      AS721        352      309       43   12.2%   DLA-ASNBLOCK-AS
      AS719        533      490       43    8.1%   LANLINK autonomous system
      AS2711        96       57       39   40.6%   SUNBELT-AS
      AS7545       116       78       38   32.8%   TPG Internet Pty Ltd
      AS6412        48       12       36   75.0%   Gulfnet International
      AS1691       158      122       36   22.8%   BCTEL
      AS4200       124       90       34   27.4%   AGIS (Apex Global Information Ser
      AS376         98       64       34   34.7%   RISQ
      AS3564        61       27       34   55.7%   Microserve Infromation Systems In
      
       --- 20Oct97 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS2493       833      481      352   42.3%   iSTAR Internet, Inc.
      AS3602       530      314      216   40.8%   Sprint Canada Inc.
      AS174        918      703      215   23.4%   Performance Systems International
      AS816        500      347      153   30.6%   UUNET Canada (ASN-UUNETCA-AS4)
      AS839        124       27       97   78.2%   North West Territories Regional N
      AS5769       166       77       89   53.6%   Videotron Telecom Ltee
      AS701        992      905       87    8.8%   Alternet
      AS4293       161       78       83   51.6%   IMCI
      AS2704       255      180       75   29.4%   HOOKUP-NET-A
      AS2048       160       89       71   44.4%   LaNet
      AS1967       135       64       71   52.6%   Middle East Technical University 
      AS3804       201      137       64   31.8%   Bell Solutions
      AS5668        87       27       60   69.0%   Century Telephone Inc.
      AS4648       207      147       60   29.0%   NZIX 2
      AS1239       613      554       59    9.6%   SprintLink Backbone
      AS719        584      526       58    9.9%   LANLINK autonomous system
      AS1221       387      331       56   14.5%   AARNET-AS
      AS72          83       29       54   65.1%   Schlumberger Information Network
      AS3464       117       63       54   46.2%   ASC-NET
      AS1          891      838       53    5.9%   BBNPLANET
      AS549        222      174       48   21.6%   ONet Backbone
      AS4747       122       74       48   39.3%   Taiwan Telecommunication Network 
      AS4763       112       65       47   42.0%   Telstra New Zealand
      AS3561       918      871       47    5.1%   MCI
      AS271        101       56       45   44.6%   BCnet Backbone
      AS721        346      303       43   12.4%   DLA-ASNBLOCK-AS
      AS2711        96       57       39   40.6%   SUNBELT-AS
      AS7545       115       77       38   33.0%   TPG Internet Pty Ltd
      AS6412        48       12       36   75.0%   Gulfnet International
      AS1691       158      122       36   22.8%   BCTEL
      
       --- 19Oct97 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS2493       830      479      351   42.3%   iSTAR Internet, Inc.
      AS174        925      704      221   23.9%   Performance Systems International
      AS3602       530      314      216   40.8%   Sprint Canada Inc.
      AS4293       361      174      187   51.8%   IMCI
      AS816        496      345      151   30.4%   UUNET Canada (ASN-UUNETCA-AS4)
      AS839        124       27       97   78.2%   North West Territories Regional N
      AS5769       166       77       89   53.6%   Videotron Telecom Ltee
      AS701        994      907       87    8.8%   Alternet
      AS2704       255      180       75   29.4%   HOOKUP-NET-A
      AS1967       135       64       71   52.6%   Middle East Technical University 
      AS2048       159       90       69   43.4%   LaNet
      AS3804       201      137       64   31.8%   Bell Solutions
      AS5668        87       27       60   69.0%   Century Telephone Inc.
      AS4648       205      146       59   28.8%   NZIX 2
      AS1239       609      550       59    9.7%   SprintLink Backbone
      AS1221       387      331       56   14.5%   AARNET-AS
      AS72          83       29       54   65.1%   Schlumberger Information Network
      AS719        573      519       54    9.4%   LANLINK autonomous system
      AS3464       117       63       54   46.2%   ASC-NET
      AS1          894      841       53    5.9%   BBNPLANET
      AS549        222      174       48   21.6%   ONet Backbone
      AS4747       121       73       48   39.7%   Taiwan Telecommunication Network 
      AS3561       944      896       48    5.1%   MCI
      AS4763       112       65       47   42.0%   Telstra New Zealand
      AS271        100       55       45   45.0%   BCnet Backbone
      AS721        344      301       43   12.5%   DLA-ASNBLOCK-AS
      AS2711        96       57       39   40.6%   SUNBELT-AS
      AS7545       114       76       38   33.3%   TPG Internet Pty Ltd
      AS852        151      115       36   23.8%   AGT Advance Communication
      AS6412        48       12       36   75.0%   Gulfnet International
      
       --- 18Oct97 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS2493       831      480      351   42.2%   iSTAR Internet, Inc.
      AS174        929      705      224   24.1%   Performance Systems International
      AS3602       530      314      216   40.8%   Sprint Canada Inc.
      AS4293       359      176      183   51.0%   IMCI
      AS816        501      347      154   30.7%   UUNET Canada (ASN-UUNETCA-AS4)
      AS839        124       27       97   78.2%   North West Territories Regional N
      AS5769       166       77       89   53.6%   Le Groupe Videotron Ltee
      AS701        993      906       87    8.8%   Alternet
      AS2704       257      181       76   29.6%   HOOKUP-NET-A
      AS1967       135       64       71   52.6%   Middle East Technical University 
      AS2048       159       90       69   43.4%   LaNet
      AS3804       201      137       64   31.8%   Bell Solutions
      AS5668        87       27       60   69.0%   Century Telephone Inc.
      AS4648       206      146       60   29.1%   NZIX 2
      AS1239       603      545       58    9.6%   SprintLink Backbone
      AS719        583      526       57    9.8%   LANLINK autonomous system
      AS1221       387      331       56   14.5%   AARNET-AS
      AS72          83       29       54   65.1%   Schlumberger Information Network
      AS3464       117       63       54   46.2%   ASC-NET
      AS1          890      838       52    5.8%   BBNPLANET
      AS3561       945      897       48    5.1%   MCI
      AS4763       112       65       47   42.0%   Telstra New Zealand
      AS549        218      172       46   21.1%   ONet Backbone
      AS4747       117       71       46   39.3%   Taiwan Telecommunication Network 
      AS271        100       55       45   45.0%   BCnet Backbone
      AS721        344      301       43   12.5%   DLA-ASNBLOCK-AS
      AS2711        96       57       39   40.6%   SUNBELT-AS
      AS7545       114       76       38   33.3%   TPG Internet Pty Ltd
      AS852        151      115       36   23.8%   AGT Advance Communication
      AS6412        48       12       36   75.0%   Gulfnet International
      
       --- 17Oct97 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS2493       830      479      351   42.3%   iSTAR Internet, Inc.
      AS174        934      711      223   23.9%   Performance Systems International
      AS3602       529      315      214   40.5%   Sprint Canada Inc.
      AS4293       362      175      187   51.7%   IMCI
      AS816        496      347      149   30.0%   UUNET Canada (ASN-UUNETCA-AS4)
      AS839        124       27       97   78.2%   North West Territories Regional N
      AS5769       165       76       89   53.9%   Le Groupe Videotron Ltee
      AS701        978      893       85    8.7%   Alternet
      AS2704       245      173       72   29.4%   HOOKUP-NET-A
      AS1967       135       64       71   52.6%   Middle East Technical University 
      AS2048       159       90       69   43.4%   LaNet
      AS5668        88       23       65   73.9%   Century Telephone Inc.
      AS3804       201      137       64   31.8%   Bell Solutions
      AS4648       207      147       60   29.0%   NZIX 2
      AS1239       613      554       59    9.6%   SprintLink Backbone
      AS719        583      526       57    9.8%   LANLINK autonomous system
      AS1221       387      331       56   14.5%   AARNET-AS
      AS72          83       29       54   65.1%   Schlumberger Information Network
      AS3464       116       64       52   44.8%   ASC-NET
      AS1          890      838       52    5.8%   BBNPLANET
      AS549        222      172       50   22.5%   ONet Backbone
      AS4763       112       65       47   42.0%   Telstra New Zealand
      AS3561       938      891       47    5.0%   MCI
      AS4747       118       72       46   39.0%   Taiwan Telecommunication Network 
      AS271        101       56       45   44.6%   BCnet Backbone
      AS721        344      301       43   12.5%   DLA-ASNBLOCK-AS
      AS2711        96       57       39   40.6%   SUNBELT-AS
      AS7545       114       76       38   33.3%   TPG Internet Pty Ltd
      AS1691       159      122       37   23.3%   BCTEL
      AS852        151      115       36   23.8%   AGT Advance Communication
      
      
      
      
      2) Weekly Delta
      
      This a daily snapshot of changes in classful routes being withdrawn and added.
      the deltas are calculated over a rolling 7 day period. Please bear in mind this
      is purely a "snapshot" and a large flucuation could be caused by a connectivity
      problem for example. However, this does give some indication of service
      providers that are moving to classless routing.
      
      
      Top 20 Withdrawn Classful Routes from 17Oct97 to 24Oct97
      	-132  AS721 DLA-ASNBLOCK-AS
      	 -81  AS174 Performance Systems International
      	 -48  AS724 DLA-ASNBLOCK-AS
      	 -47  AS701 Alternet
      	 -42  AS400 AFCONC-BLOCK1-AS
      	 -31 AS7051 Secure Network Systems
      	 -23 AS1461 UNKNOWN
      	 -22 AS6401 eConnect
      	 -21 AS6595 DODDSEUR
      	 -15 AS4200 AGIS (Apex Global Information Ser
      	 -14 AS2493 iSTAR Internet, Inc.
      	 -13  AS568 JIS (Joint Interconnection Servic
      	 -12 AS2548 DIGEX-AS
      	 -10 AS3563 Pilot Network Services, Inc.
      	  -9  AS450 AFCONC-BLOCK1-AS
      	  -8 AS6357 DBTECH
      	  -7  AS549 ONet Backbone
      	  -6 AS1564 UNKNOWN
      	  -5 AS3527 NIH-NET
      	  -4 AS2012 ELTENET
      
      Top 20 Added Classful Routes from 17Oct97 to 24Oct97
      	 106 AS2764 connect.com.au pty ltd
      	 104  AS719 LANLINK autonomous system
      	  63 AS4778 AUNET Corp.
      	  44 AS4786 Ballarat NetConnect Pty Ltd
      	  12 AS2704 HOOKUP-NET-A
      	  11 AS2592 E.U. BAUM, Izmir, TURKIYE
      	  10  AS802 York University
      	   9 AS1251 ANBR-AS
      	   8 AS3561 MCI
      	   6  AS271 BCnet Backbone
      	   5 AS4747 Taiwan Telecommunication Network 
      	   4 AS5668 Century Telephone Inc.
      	   3 AS6140 ImpSat Corp
      	   2 AS3354 THENET-AS-1
      	   1 AS4805 Global IP
      
      This a daily snapshot of changes in classles routes being withdrawn and added.
      
      
      Top 20 Withdrawn Classles Routes from 17Oct97 to 24Oct97
      	 -39 AS3336 Internet Services, Kolumbus proje
      	 -16  AS568 JIS (Joint Interconnection Servic
      	 -11 AS5074 ATT-WN-DP
      	  -8  AS701 Alternet
      	  -6 AS4780 INSTITUTE FOR INFORMATION INDUSTR
      	  -5 AS4694 International Digital Communicati
      	  -4 AS4433 Access One Pty Ltd (ASN-ACCESS-ON
      	  -3 AS3763 Aimnet Corporation
      	  -2 AS2563 KoRea Education Network
      	  -1 AS2707 WEC
      
      Top 20 Added Classles Routes from 17Oct97 to 24Oct97
      	  54 AS7777 VIX2
      	  27  AS174 Performance Systems International
      	  19 AS2764 connect.com.au pty ltd
      	  16 AS4778 AUNET Corp.
      	   9 AS5006 Minnesota Internet eXchange
      	   8 AS1333 ANS Atlanta - DNSS 107
      	   7 AS3561 MCI
      	   6 AS3758 SINGNET
      	   5 AS2493 iSTAR Internet, Inc.
      	   4 AS2871 Internet Services GmbH & Co
      	   3 AS5408 Greek Research and Technology Net
      	   2 AS6772 SUPERNOVA AS
      	   1 AS3393 Computing Engineers
      
      
      
      3) Interesting aggregates
      
      
      
                  List of possibly interesting aggregates
                  ---------------------------------------
      
               Aggregate | Origin | AS Description          | Netname                
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