Routing Table Report 00:00 GMT Sun 27 Aug, 2006
Analysis Summary
----------------
BGP routing table entries examined: 210062
Prefixes after maximum aggregation: 109119
Unique aggregates announced to Internet: 95190
Total ASes present in the Internet Routing Table: 23027
Origin-only ASes present in the Internet Routing Table: 20050
Origin ASes announcing only one prefix: 9555
Transit ASes present in the Internet Routing Table: 2977
Transit-only ASes present in the Internet Routing Table: 69
Average AS path length visible in the Internet Routing Table: 3.4
Max AS path length visible: 29
Max AS path prepend of ASN (36728) 27
Prefixes from unregistered ASNs in the Routing Table: 27
Unregistered ASNs in the Routing Table: 18
Special use prefixes present in the Routing Table: 6
Prefixes being announced from unallocated address space: 10
Number of addresses announced to Internet: 1577999805
Equivalent to 94 /8s, 14 /16s and 93 /24s
Percentage of available address space announced: 42.6
Percentage of allocated address space announced: 61.6
Percentage of available address space allocated: 69.1
Total number of prefixes smaller than registry allocations: 108334
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 44401
Total APNIC prefixes after maximum aggregation: 17473
Prefixes being announced from the APNIC address blocks: 41974
Unique aggregates announced from the APNIC address blocks: 18268
APNIC Region origin ASes present in the Internet Routing Table: 2692
APNIC Region origin ASes announcing only one prefix: 754
APNIC Region transit ASes present in the Internet Routing Table: 411
Average APNIC Region AS path length visible: 4.1
Max APNIC Region AS path length visible: 24
Number of APNIC addresses announced to Internet: 261913728
Equivalent to 15 /8s, 156 /16s and 124 /24s
Percentage of available APNIC address space announced: 81.9
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911
APNIC Address Blocks 58/7, 60/7, 121/8, 122/7, 124/7, 126/8, 202/7
210/7, 218/7, 220/7 and 222/8
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 110343
Total ARIN prefixes after maximum aggregation: 60428
Prefixes being announced from the ARIN address blocks: 82305
Unique aggregates announced from the ARIN address blocks: 27424
ARIN Region origin ASes present in the Internet Routing Table: 10962
ARIN Region origin ASes announcing only one prefix: 4128
ARIN Region transit ASes present in the Internet Routing Table: 1001
Average ARIN Region AS path length visible: 2.9
Max ARIN Region AS path length visible: 29
Number of ARIN addresses announced to Internet: 296170593
Equivalent to 17 /8s, 167 /16s and 52 /24s
Percentage of available ARIN address space announced: 76.8
ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106
(pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153
3354-4607, 4865-5119, 5632-6655, 6912-7466
7723-8191, 10240-12287, 13312-15359, 16384-17407
18432-20479, 21504-23551, 25600-26591,
26624-27647, 29696-30719, 31744-33791
35840-36863, 39936-40959
ARIN Address Blocks 24/8, 63/8, 64/5, 72/6, 76/8, 199/8, 204/6,
208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 40515
Total RIPE prefixes after maximum aggregation: 26500
Prefixes being announced from the RIPE address blocks: 37819
Unique aggregates announced from the RIPE address blocks: 24468
RIPE Region origin ASes present in the Internet Routing Table: 8427
RIPE Region origin ASes announcing only one prefix: 4396
RIPE Region transit ASes present in the Internet Routing Table: 1383
Average RIPE Region AS path length visible: 3.9
Max RIPE Region AS path length visible: 28
Number of RIPE addresses announced to Internet: 261880416
Equivalent to 15 /8s, 155 /16s and 250 /24s
Percentage of available RIPE address space announced: 82.2
RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631
6656-6911, 8192-9215, 12288-13311, 15360-16383
20480-21503, 24576-25599, 28672-29695
30720-31743, 33792-35839, 38912-39935
40960-41983
RIPE Address Blocks 62/8, 80/5, 88/6, 193/8, 194/7, 212/7
and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 12376
Total LACNIC prefixes after maximum aggregation: 3772
Prefixes being announced from the LACNIC address blocks: 10403
Unique aggregates announced from the LACNIC address blocks: 5980
LACNIC Region origin ASes present in the Internet Routing Table: 714
LACNIC Region origin ASes announcing only one prefix: 232
LACNIC Region transit ASes present in the Internet Routing Table: 128
Average LACNIC Region AS path length visible: 4.2
Max LACNIC Region AS path length visible: 16
Number of LACNIC addresses announced to Internet: 32251136
Equivalent to 1 /8s, 236 /16s and 29 /24s
Percentage of available LACNIC address space announced: 48.1
LACNIC AS Blocks 26592-26623, 27648-28671, plus ERX transfers
LACNIC Address Blocks 189/8, 190/8, 200/7
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 2401
Total AfriNIC prefixes after maximum aggregation: 946
Prefixes being announced from the AfriNIC address blocks: 1673
Unique aggregates announced from the AfriNIC address blocks: 999
AfriNIC Region origin ASes present in the Internet Routing Table: 163
AfriNIC Region origin ASes announcing only one prefix: 45
AfriNIC Region transit ASes present in the Internet Routing Table: 25
Average AfriNIC Region AS path length visible: 3.7
Max AfriNIC Region AS path length visible: 17
Number of AfriNIC addresses announced to Internet: 4216832
Equivalent to 0 /8s, 64 /16s and 88 /24s
Percentage of available AfriNIC address space announced: 12.6
AfriNIC AS Blocks 36864-37887 & ERX transfers
AfriNIC Address Blocks 41/8, 196/8
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
4134 1305 7966 240 CHINANET-BACKBONE
4755 972 255 63 Videsh Sanchar Nigam Ltd. Aut
9583 947 109 15 Sify Limited
9498 802 211 71 BHARTI BT INTERNET LTD.
4766 751 4435 309 Korea Telecom (KIX)
1221 650 1779 479 Telstra Pty Ltd
4538 597 2717 31 China Education and Research
7545 543 124 74 TPG Internet Pty Ltd
17488 522 32 18 Hathway IP Over Cable Interne
17676 497 10933 62 Softbank BB Corp.
9443 450 111 83 Primus Telecommunications
18101 445 85 18 Reliance Infocom Ltd Internet
4812 415 739 59 China Telecom (Shanghai)
17849 412 30 123 Telecommunications Technology
4802 406 84 148 Wantree Development
17974 377 129 12 PT TELEKOMUNIKASI INDONESIA
7474 359 211 230 SingTel Optus Pty Ltd
17557 358 29 167 Pakistan Telecom
2907 338 1717 311 SINET Japan
4837 320 3539 138 chinanet IDC center beijing n
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 557 1947 438 UUNET - Commercial IP service
3215 399 1760 97 France Telecom Transpac
3301 315 1186 300 TeliaNet Sweden
3320 297 5013 240 Deutsche Telekom AG
8220 286 471 268 COLT Telecommunications
24863 254 42 11 LINKdotNET AS number
1257 249 744 168 SWIPnet Swedish IP Network
680 248 2041 244 DFN-IP service G-WiN
6746 243 91 222 Dynamic Network Technologies,
5089 237 1657 48 NTL Group Limited
3246 231 462 221 Song Networks
8708 216 278 203 Romania Data Systems S.A.
30890 203 18 84 SC Kappa Invexim SRL
3269 202 2246 73 TELECOM ITALIA
8551 202 182 27 Bezeq International
6830 195 879 43 UPC Distribution Services
8866 182 37 15 Bulgarian Telecommunication C
5416 181 12 7 BATELCO-BH
3300 174 171 95 AUCS Communications Services
786 171 1763 171 The JANET IP Service
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 5002 6796 786 UUNET Technologies, Inc.
4323 3215 768 288 Time Warner Telecom
7018 1485 6267 964 AT&T WorldNet Services
705 1478 556 649 UUNET Technologies, Inc.
174 1119 5754 885 Cogent Communications
6197 1019 637 479 BellSouth Network Solutions,
721 998 21926 310 DLA Systems Automation Center
2386 959 561 724 AT&T Data Communications Serv
18566 958 272 8 Covad Communications
1239 851 2799 602 Sprint
7046 822 250 680 UUNET Technologies, Inc.
20115 736 658 385 Charter Communications
19262 735 2268 189 Verizon Global Networks
11492 728 90 16 Cable One
22773 700 1744 43 Cox Communications, Inc.
209 684 3641 539 Qwest
7011 667 207 422 Citizens Utilities
852 604 1068 384 Telus Advanced Communications
6461 603 221 90 AboveNet Communications, Inc.
19916 563 49 54 OLM LLC
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 3215 2927 Time Warner Telecom
4134 1305 1065 CHINANET-BACKBONE
18566 958 950 Covad Communications
9583 947 932 Sify Limited
4755 972 909 Videsh Sanchar Nigam Ltd. Aut
705 1478 829 UUNET Technologies, Inc.
9498 802 731 BHARTI BT INTERNET LTD.
11492 728 712 Cable One
721 998 688 DLA Systems Automation Center
22773 700 657 Cox Communications, Inc.
4538 597 566 China Education and Research
8151 790 563 UniNet S.A. de C.V.
19262 735 546 Verizon Global Networks
6197 1019 540 BellSouth Network Solutions,
7018 1485 521 AT&T WorldNet Services
5668 533 515 CenturyTel Internet Holdings,
6461 603 513 AboveNet Communications, Inc.
19916 563 509 OLM LLC
17488 522 504 Hathway IP Over Cable Interne
855 559 489 Canadian Research Network
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
64666 PRIVATE 2.2.2.0/24 8001 Net Access Corporati
65473 PRIVATE 66.246.179.0/24 8001 Net Access Corporati
64500 RESERVED 81.17.39.128/27 24587 AS for Internet Onli
65515 PRIVATE 87.251.34.0/24 12859 Business Internet Tr
65515 PRIVATE 87.251.36.0/24 12859 Business Internet Tr
65014 PRIVATE 135.196.176.96/27 8190 VIATEL
65106 PRIVATE 195.219.161.0/27 6453 Teleglobe Inc.
65517 PRIVATE 198.32.176.0/24 293 Energy Sciences Netw
65000 PRIVATE 199.133.62.0/24 10886 University of Maryla
65000 PRIVATE 199.133.63.0/24 10886 University of Maryla
65010 PRIVATE 203.117.213.0/24 9255 Singapore Telecom
24409 UNALLOCATED 203.119.29.0/24 9808 Guangdong Mobile Com
64659 PRIVATE 210.184.109.0/24 9729 iAdvantage Limited
65010 PRIVATE 212.2.12.160/28 8190 VIATEL
65016 PRIVATE 212.2.26.64/29 8190 VIATEL
65016 PRIVATE 212.2.31.184/30 8190 VIATEL
64565 PRIVATE 212.111.35.128/27 4513 PFM Communications,
65515 PRIVATE 213.154.234.0/27 12859 Business Internet Tr
65517 PRIVATE 213.154.248.0/29 12859 Business Internet Tr
65517 PRIVATE 213.154.248.8/29 12859 Business Internet Tr
64560 PRIVATE 213.219.53.192/26 4513 PFM Communications,
65013 PRIVATE 213.235.33.0/27 8190 VIATEL
65000 PRIVATE 216.136.11.0/24 27182 Peregrine Capital Ma
64512 PRIVATE 217.134.164.0/22 5428 Energis Communicatio
64512 PRIVATE 217.134.168.0/21 5428 Energis Communicatio
64512 PRIVATE 217.134.176.0/21 5428 Energis Communicatio
64512 PRIVATE 217.134.184.0/22 5428 Energis Communicatio
Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------
Prefix Origin AS Description
0.0.0.0/8 3303 Swisscom Ltd
172.16.2.32/27 6325 Illinois Century Network
172.16.2.80/28 6325 Illinois Century Network
172.31.31.0/30 6325 Illinois Century Network
192.0.2.0/24 812 Rogers WAVE
192.168.83.0/24 292 Energy Sciences Network
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
2.2.2.0/24 64666 PRIVATE ASN
132.0.0.0/10 721 DLA Systems Automation Center
137.0.0.0/13 721 DLA Systems Automation Center
158.0.0.0/13 721 DLA Systems Automation Center
192.44.0.0/24 5501 Fraunhofer Gesellschaft
192.44.0.0/19 702 UUNET - Commercial IP service
192.70.164.0/24 25689 National Research Council of
192.84.205.0/24 719 LANLINK autonomous system
192.172.0.0/19 721 DLA Systems Automation Center
192.249.0.0/20 3450 University of Tennessee, Knox
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:19 /9:9 /10:13 /11:31 /12:103
/13:217 /14:379 /15:742 /16:9007 /17:3505 /18:5725
/19:12415 /20:14163 /21:12552 /22:16071 /23:17392 /24:115361
/25:514 /26:479 /27:306 /28:225 /29:197 /30:521
/31:0 /32:116
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 3735 5002 UUNET Technologies, Inc.
4323 1905 3215 Time Warner Telecom
18566 941 958 Covad Communications
705 925 1478 UUNET Technologies, Inc.
6197 799 1019 BellSouth Network Solutions,
9583 778 947 Sify Limited
7018 776 1485 AT&T WorldNet Services
11492 716 728 Cable One
2386 679 959 AT&T Data Communications Serv
7046 584 822 UUNET Technologies, Inc.
7011 572 667 Citizens Utilities
4766 562 751 Korea Telecom (KIX)
19916 557 563 OLM LLC
6461 533 603 AboveNet Communications, Inc.
2686 517 562 IBM
9498 480 802 BHARTI BT INTERNET LTD.
855 436 559 Canadian Research Network
15270 434 465 PaeTec.net -a division of Pae
5668 416 533 CenturyTel Internet Holdings,
4755 409 972 Videsh Sanchar Nigam Ltd. Aut
Number of /24s announced per /8 block (Global)
----------------------------------------------
2:1 4:9 8:49 12:1637 13:1 15:15
16:3 17:3 18:4 20:41 24:815 25:1
32:269 38:271 40:54 41:17 44:3 47:6
52:4 55:1 56:3 57:54 58:219 59:290
60:189 61:927 62:951 63:3389 64:3588 65:3625
66:3848 67:666 68:668 69:1618 70:390 71:89
72:887 73:2 74:77 75:6 80:804 81:704
82:711 83:391 84:411 85:608 86:397 87:440
88:169 89:417 91:1 121:17 122:6 123:1
124:347 125:612 128:166 129:204 130:122 131:315
132:37 133:9 134:161 135:48 136:177 137:85
138:215 139:137 140:523 141:134 142:389 143:192
144:239 145:41 146:325 147:141 148:354 149:179
150:114 151:116 152:75 153:117 154:6 155:210
156:173 157:180 158:164 159:174 160:93 161:88
162:219 163:166 164:276 165:227 166:184 167:240
168:599 169:128 170:361 171:14 189:2 190:204
192:5840 193:3423 194:2796 195:2191 196:941 198:4042
199:3382 200:4630 201:1060 202:6969 203:7179 204:4081
205:2175 206:2831 207:3612 208:3053 209:3886 210:2229
211:903 212:1358 213:1522 214:370 215:41 216:4419
217:1307 218:354 219:300 220:783 221:382 222:253
End of report