The Cidr Report

  • To: nanog at merit dot edu
  • Subject: The Cidr Report
  • From: Tony Bates <tbates at cisco dot com>
  • Date: Fri, 07 Nov 1997 12:00:02 -0800
  • 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 Nov  7 12:00:00 PST 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            A summary of the last weeks changes in terms of withdrawn and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 07Nov97
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      271097	46244
      281097	47092
      291097	47120
      301097	47207
      311097	46221
      011197	46279
      021197	46023
      031197	46334
      
      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:                 2194
      
      Number of ASes announcing only one prefix:         626 (0 cidr, 626 classful)
      
      Largest number of  cidr routes:                      0 announced by       
      Largest number of classful routes:                 942 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 07Nov97 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS2493       733      412      321   43.8%   iSTAR Internet, Inc.
      AS3602       546      311      235   43.0%   Sprint Canada Inc.
      AS174        863      666      197   22.8%   Performance Systems International
      AS4293       364      183      181   49.7%   IMCI
      AS816        518      361      157   30.3%   UUNET Canada (ASN-UUNETCA-AS4)
      AS719        682      560      122   17.9%   LANLINK autonomous system
      AS839        124       27       97   78.2%   North West Territories Regional N
      AS3749       122       36       86   70.5%   TECNET
      AS2685       172       89       83   48.3%   IBM Global Network - US
      AS701        942      862       80    8.5%   Alternet
      AS2704       253      176       77   30.4%   HOOKUP-NET-A
      AS2048       159       91       68   42.8%   LaNet
      AS3804       200      136       64   32.0%   Bell Solutions
      AS4648       208      148       60   28.8%   NZIX 2
      AS5668        94       36       58   61.7%   Century Telephone Inc.
      AS1967        92       36       56   60.9%   Middle East Technical University 
      AS1239       611      555       56    9.2%   SprintLink Backbone
      AS1221       393      337       56   14.2%   AARNET-AS
      AS72          84       30       54   64.3%   Schlumberger Information Network
      AS4747       135       82       53   39.3%   Taiwan Telecommunication Network 
      AS3464       114       61       53   46.5%   ASC-NET
      AS1          881      830       51    5.8%   BBNPLANET
      AS4763       113       66       47   41.6%   Telstra New Zealand
      AS549        215      169       46   21.4%   ONet Backbone
      AS271        106       60       46   43.4%   BCnet Backbone
      AS1691       170      127       43   25.3%   BCTEL
      AS3561       935      893       42    4.5%   MCI
      AS2711        96       57       39   40.6%   SUNBELT-AS
      AS3564        61       24       37   60.7%   Microserve Infromation Systems In
      AS7545       118       82       36   30.5%   TPG Internet Pty Ltd
      
       --- 06Nov97 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS2493       733      412      321   43.8%   iSTAR Internet, Inc.
      AS3602       546      311      235   43.0%   Sprint Canada Inc.
      AS174        863      666      197   22.8%   Performance Systems International
      AS4293       364      183      181   49.7%   IMCI
      AS816        518      361      157   30.3%   UUNET Canada (ASN-UUNETCA-AS4)
      AS719        682      560      122   17.9%   LANLINK autonomous system
      AS839        124       27       97   78.2%   North West Territories Regional N
      AS3749       122       36       86   70.5%   TECNET
      AS2685       172       89       83   48.3%   IBM Global Network - US
      AS701        942      862       80    8.5%   Alternet
      AS2704       253      176       77   30.4%   HOOKUP-NET-A
      AS2048       159       91       68   42.8%   LaNet
      AS3804       200      136       64   32.0%   Bell Solutions
      AS4648       208      148       60   28.8%   NZIX 2
      AS5668        94       36       58   61.7%   Century Telephone Inc.
      AS1967        92       36       56   60.9%   Middle East Technical University 
      AS1239       611      555       56    9.2%   SprintLink Backbone
      AS1221       393      337       56   14.2%   AARNET-AS
      AS72          84       30       54   64.3%   Schlumberger Information Network
      AS4747       135       82       53   39.3%   Taiwan Telecommunication Network 
      AS3464       114       61       53   46.5%   ASC-NET
      AS1          881      830       51    5.8%   BBNPLANET
      AS4763       113       66       47   41.6%   Telstra New Zealand
      AS549        215      169       46   21.4%   ONet Backbone
      AS271        106       60       46   43.4%   BCnet Backbone
      AS1691       170      127       43   25.3%   BCTEL
      AS3561       935      893       42    4.5%   MCI
      AS2711        96       57       39   40.6%   SUNBELT-AS
      AS3564        61       24       37   60.7%   Microserve Infromation Systems In
      AS7545       118       82       36   30.5%   TPG Internet Pty Ltd
      
       --- 05Nov97 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS2493       733      412      321   43.8%   iSTAR Internet, Inc.
      AS3602       546      311      235   43.0%   Sprint Canada Inc.
      AS174        863      666      197   22.8%   Performance Systems International
      AS4293       364      183      181   49.7%   IMCI
      AS816        518      361      157   30.3%   UUNET Canada (ASN-UUNETCA-AS4)
      AS719        682      560      122   17.9%   LANLINK autonomous system
      AS839        124       27       97   78.2%   North West Territories Regional N
      AS3749       122       36       86   70.5%   TECNET
      AS2685       172       89       83   48.3%   IBM Global Network - US
      AS701        942      862       80    8.5%   Alternet
      AS2704       253      176       77   30.4%   HOOKUP-NET-A
      AS2048       159       91       68   42.8%   LaNet
      AS3804       200      136       64   32.0%   Bell Solutions
      AS4648       208      148       60   28.8%   NZIX 2
      AS5668        94       36       58   61.7%   Century Telephone Inc.
      AS1967        92       36       56   60.9%   Middle East Technical University 
      AS1239       611      555       56    9.2%   SprintLink Backbone
      AS1221       393      337       56   14.2%   AARNET-AS
      AS72          84       30       54   64.3%   Schlumberger Information Network
      AS4747       135       82       53   39.3%   Taiwan Telecommunication Network 
      AS3464       114       61       53   46.5%   ASC-NET
      AS1          881      830       51    5.8%   BBNPLANET
      AS4763       113       66       47   41.6%   Telstra New Zealand
      AS549        215      169       46   21.4%   ONet Backbone
      AS271        106       60       46   43.4%   BCnet Backbone
      AS1691       170      127       43   25.3%   BCTEL
      AS3561       935      893       42    4.5%   MCI
      AS2711        96       57       39   40.6%   SUNBELT-AS
      AS3564        61       24       37   60.7%   Microserve Infromation Systems In
      AS7545       118       82       36   30.5%   TPG Internet Pty Ltd
      
       --- 04Nov97 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS2493       733      412      321   43.8%   iSTAR Internet, Inc.
      AS3602       546      311      235   43.0%   Sprint Canada Inc.
      AS174        863      666      197   22.8%   Performance Systems International
      AS4293       364      183      181   49.7%   IMCI
      AS816        518      361      157   30.3%   UUNET Canada (ASN-UUNETCA-AS4)
      AS719        682      560      122   17.9%   LANLINK autonomous system
      AS839        124       27       97   78.2%   North West Territories Regional N
      AS3749       122       36       86   70.5%   TECNET
      AS2685       172       89       83   48.3%   IBM Global Network - US
      AS701        942      862       80    8.5%   Alternet
      AS2704       253      176       77   30.4%   HOOKUP-NET-A
      AS2048       159       91       68   42.8%   LaNet
      AS3804       200      136       64   32.0%   Bell Solutions
      AS4648       208      148       60   28.8%   NZIX 2
      AS5668        94       36       58   61.7%   Century Telephone Inc.
      AS1967        92       36       56   60.9%   Middle East Technical University 
      AS1239       611      555       56    9.2%   SprintLink Backbone
      AS1221       393      337       56   14.2%   AARNET-AS
      AS72          84       30       54   64.3%   Schlumberger Information Network
      AS4747       135       82       53   39.3%   Taiwan Telecommunication Network 
      AS3464       114       61       53   46.5%   ASC-NET
      AS1          881      830       51    5.8%   BBNPLANET
      AS4763       113       66       47   41.6%   Telstra New Zealand
      AS549        215      169       46   21.4%   ONet Backbone
      AS271        106       60       46   43.4%   BCnet Backbone
      AS1691       170      127       43   25.3%   BCTEL
      AS3561       935      893       42    4.5%   MCI
      AS2711        96       57       39   40.6%   SUNBELT-AS
      AS3564        61       24       37   60.7%   Microserve Infromation Systems In
      AS7545       118       82       36   30.5%   TPG Internet Pty Ltd
      
       --- 03Nov97 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS2493       733      412      321   43.8%   iSTAR Internet, Inc.
      AS3602       546      311      235   43.0%   Sprint Canada Inc.
      AS174        863      666      197   22.8%   Performance Systems International
      AS4293       364      183      181   49.7%   IMCI
      AS816        518      361      157   30.3%   UUNET Canada (ASN-UUNETCA-AS4)
      AS719        682      560      122   17.9%   LANLINK autonomous system
      AS839        124       27       97   78.2%   North West Territories Regional N
      AS3749       122       36       86   70.5%   TECNET
      AS2685       172       89       83   48.3%   IBM Global Network - US
      AS701        942      862       80    8.5%   Alternet
      AS2704       253      176       77   30.4%   HOOKUP-NET-A
      AS2048       159       91       68   42.8%   LaNet
      AS3804       200      136       64   32.0%   Bell Solutions
      AS4648       208      148       60   28.8%   NZIX 2
      AS5668        94       36       58   61.7%   Century Telephone Inc.
      AS1967        92       36       56   60.9%   Middle East Technical University 
      AS1239       611      555       56    9.2%   SprintLink Backbone
      AS1221       393      337       56   14.2%   AARNET-AS
      AS72          84       30       54   64.3%   Schlumberger Information Network
      AS4747       135       82       53   39.3%   Taiwan Telecommunication Network 
      AS3464       114       61       53   46.5%   ASC-NET
      AS1          881      830       51    5.8%   BBNPLANET
      AS4763       113       66       47   41.6%   Telstra New Zealand
      AS549        215      169       46   21.4%   ONet Backbone
      AS271        106       60       46   43.4%   BCnet Backbone
      AS1691       170      127       43   25.3%   BCTEL
      AS3561       935      893       42    4.5%   MCI
      AS2711        96       57       39   40.6%   SUNBELT-AS
      AS3564        61       24       37   60.7%   Microserve Infromation Systems In
      AS7545       118       82       36   30.5%   TPG Internet Pty Ltd
      
       --- 02Nov97 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS2493       733      412      321   43.8%   iSTAR Internet, Inc.
      AS3602       545      311      234   42.9%   Sprint Canada Inc.
      AS174        924      705      219   23.7%   Performance Systems International
      AS4293       364      184      180   49.5%   IMCI
      AS816        520      364      156   30.0%   UUNET Canada (ASN-UUNETCA-AS4)
      AS719        682      560      122   17.9%   LANLINK autonomous system
      AS839        124       27       97   78.2%   North West Territories Regional N
      AS3749       123       36       87   70.7%   TECNET
      AS701        946      866       80    8.5%   Alternet
      AS2704       252      177       75   29.8%   HOOKUP-NET-A
      AS2048       159       91       68   42.8%   LaNet
      AS3804       200      136       64   32.0%   Bell Solutions
      AS4648       208      148       60   28.8%   NZIX 2
      AS5668        94       36       58   61.7%   Century Telephone Inc.
      AS1967        92       36       56   60.9%   Middle East Technical University 
      AS1239       611      555       56    9.2%   SprintLink Backbone
      AS1221       392      336       56   14.3%   AARNET-AS
      AS72          84       30       54   64.3%   Schlumberger Information Network
      AS4747       135       82       53   39.3%   Taiwan Telecommunication Network 
      AS3464       113       62       51   45.1%   ASC-NET
      AS1          879      828       51    5.8%   BBNPLANET
      AS549        216      168       48   22.2%   ONet Backbone
      AS4763       113       66       47   41.6%   Telstra New Zealand
      AS271        105       60       45   42.9%   BCnet Backbone
      AS1691       170      127       43   25.3%   BCTEL
      AS3561       936      894       42    4.5%   MCI
      AS2711        96       57       39   40.6%   SUNBELT-AS
      AS3564        61       24       37   60.7%   Microserve Infromation Systems In
      AS7545       118       82       36   30.5%   TPG Internet Pty Ltd
      AS6412        48       12       36   75.0%   Gulfnet International
      
       --- 01Nov97 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS2493       731      411      320   43.8%   iSTAR Internet, Inc.
      AS3602       548      312      236   43.1%   Sprint Canada Inc.
      AS174        929      709      220   23.7%   Performance Systems International
      AS4293       365      180      185   50.7%   IMCI
      AS816        520      363      157   30.2%   UUNET Canada (ASN-UUNETCA-AS4)
      AS2685       269      123      146   54.3%   IBM Global Network - US
      AS719        682      560      122   17.9%   LANLINK autonomous system
      AS839        124       27       97   78.2%   North West Territories Regional N
      AS3749       123       36       87   70.7%   TECNET
      AS701        944      864       80    8.5%   Alternet
      AS2704       251      173       78   31.1%   HOOKUP-NET-A
      AS3804       200      136       64   32.0%   Bell Solutions
      AS4648       208      148       60   28.8%   NZIX 2
      AS5668        94       36       58   61.7%   Century Telephone Inc.
      AS2048       141       84       57   40.4%   LaNet
      AS1967        92       36       56   60.9%   Middle East Technical University 
      AS1239       611      555       56    9.2%   SprintLink Backbone
      AS1221       392      336       56   14.3%   AARNET-AS
      AS72          84       30       54   64.3%   Schlumberger Information Network
      AS3464       117       63       54   46.2%   ASC-NET
      AS4747       135       82       53   39.3%   Taiwan Telecommunication Network 
      AS1          885      834       51    5.8%   BBNPLANET
      AS549        220      172       48   21.8%   ONet Backbone
      AS4763       113       66       47   41.6%   Telstra New Zealand
      AS271        107       61       46   43.0%   BCnet Backbone
      AS1691       170      127       43   25.3%   BCTEL
      AS3561       935      893       42    4.5%   MCI
      AS2711        96       57       39   40.6%   SUNBELT-AS
      AS3564        61       24       37   60.7%   Microserve Infromation Systems In
      AS7545       118       82       36   30.5%   TPG Internet Pty Ltd
      
       --- 31Oct97 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS2493       753      426      327   43.4%   iSTAR Internet, Inc.
      AS3602       546      311      235   43.0%   Sprint Canada Inc.
      AS174        934      718      216   23.1%   Performance Systems International
      AS4293       367      178      189   51.5%   IMCI
      AS816        511      360      151   29.5%   UUNET Canada (ASN-UUNETCA-AS4)
      AS2685       269      123      146   54.3%   IBM Global Network - US
      AS839        124       27       97   78.2%   North West Territories Regional N
      AS719        620      523       97   15.6%   LANLINK autonomous system
      AS3749       123       36       87   70.7%   TECNET
      AS701        946      867       79    8.4%   Alternet
      AS2704       253      177       76   30.0%   HOOKUP-NET-A
      AS2048       161       91       70   43.5%   LaNet
      AS1967       109       43       66   60.6%   Middle East Technical University 
      AS3804       201      137       64   31.8%   Bell Solutions
      AS4648       204      144       60   29.4%   NZIX 2
      AS5668        94       36       58   61.7%   Century Telephone Inc.
      AS1239       611      555       56    9.2%   SprintLink Backbone
      AS1221       392      336       56   14.3%   AARNET-AS
      AS3464       118       63       55   46.6%   ASC-NET
      AS72          84       30       54   64.3%   Schlumberger Information Network
      AS4747       135       82       53   39.3%   Taiwan Telecommunication Network 
      AS1          885      834       51    5.8%   BBNPLANET
      AS549        220      172       48   21.8%   ONet Backbone
      AS4763       113       66       47   41.6%   Telstra New Zealand
      AS271        105       60       45   42.9%   BCnet Backbone
      AS3561       936      894       42    4.5%   MCI
      AS2711        96       57       39   40.6%   SUNBELT-AS
      AS1691       160      122       38   23.8%   BCTEL
      AS3564        61       24       37   60.7%   Microserve Infromation Systems In
      AS7545       118       82       36   30.5%   TPG Internet Pty Ltd
      
      
      
      
      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 31Oct97 to 07Nov97
      	 -97 AS2685 IBM Global Network - US
      	 -71  AS174 Performance Systems International
      	 -34 AS5769 Videotron Telecom Ltee
      	 -32 AS8013 PSINET-CA
      	 -31 AS1761 Texas Dept. of Information Resour
      	 -24 AS6064 INTERSYS-AS
      	 -20 AS2493 iSTAR Internet, Inc.
      	 -17 AS1967 Middle East Technical University 
      	 -13 AS7470 ASIA INFONET Co.,Ltd.
      	 -10 AS2150 California State University Netwo
      	  -7 AS6755 ASN - TURNET
      	  -6 AS1767 IndNet AS
      	  -5 AS3388 UNM-AS
      	  -4  AS705 ALTERNET-AS
      	  -3   AS52 UCLA
      	  -2 AS4755 Videsh Sanchar Nigam Ltd. India
      	  -1 AS5486 Euronet Digital Communications
      
      Top 20 Added Classful Routes from 31Oct97 to 07Nov97
      	  76 AS3301 TeliaNet Sweden
      	  62  AS719 LANLINK autonomous system
      	  10 AS1290 PSINet UK Ltd.
      	   7  AS816 UUNET Canada (ASN-UUNETCA-AS4)
      	   6 AS2563 KoRea Education Network
      	   5 AS7497 Computer Network Information Cent
      	   4 AS3267 RUNNet
      	   3 AS6402 OneCall Communications Inc.
      	   2 AS1236 GTEGSC
      	   1  AS271 BCnet Backbone
      
      This a daily snapshot of changes in classles routes being withdrawn and added.
      
      
      Top 20 Withdrawn Classles Routes from 31Oct97 to 07Nov97
      
      Top 20 Added Classles Routes from 31Oct97 to 07Nov97
      
      
      
      3) Interesting aggregates
      
      
      
                  List of possibly interesting aggregates
                  ---------------------------------------
      
               Aggregate | Origin | AS Description          | Netname                
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