Weekly Routing Table Report
Routing Table Analysis
cscora at thyme.apnic.net
Fri May 31 06:04:55 EDT 2002
This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.
Daily listings are sent to bgp-stats at lists.apnic.net
For a graphical representation, please see http://www.apnic.net/stats/bgp.
If you have any comments please contact Philip Smith <pfs at cisco.com>.
Routing Table Report 20:00 +10GMT Fri 31 May, 2002
Analysis Summary
----------------
BGP routing table entries examined: 113208
Prefixes after maximum aggregation: 73232
Unique aggregates announced to Internet: 52880
Total ASes present in the Internet Routing Table: 13148
Origin-only ASes present in the Internet Routing Table: 11405
Origin ASes announcing only one prefix: 5013
Transit ASes present in the Internet Routing Table: 1743
Transit-only ASes present in the Internet Routing Table: 55
Average AS path length visible in the Internet Routing Table: 5.4
Max AS path length visible: 18
Illegal AS announcements present in the Routing Table: 1
Non-routable prefixes present in the Routing Table: 1
Prefixes being announced from the IANA Reserved Address blocks: 38
Number of addresses announced to Internet: 1178191436
Equivalent to 70 /8s, 57 /16s and 198 /24s
Percentage of available address space announced: 31.8
Percentage of allocated address space announced: 59.2
Percentage of available address space allocated: 53.7
Total number of prefixes smaller than registry allocations: 45887
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 18102
Total APNIC prefixes after maximum aggregation: 10934
Prefixes being announced from the APNIC address blocks: 16583
Unique aggregates announced from the APNIC address blocks: 9814
APNIC Region origin ASes present in the Internet Routing Table: 1515
APNIC Region origin ASes announcing only one prefix: 502
APNIC Region transit ASes present in the Internet Routing Table: 269
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 13
Number of APNIC addresses announced to Internet: 89895008
Equivalent to 5 /8s, 91 /16s and 176 /24s
Percentage of available APNIC address space announced: 66.5
APNIC AS Blocks 4608 - 4864, 7467 - 7722, 9216 - 10239
17408 - 18431, 23552 - 24575
APNIC Address Blocks 61/8, 202/7, 210/7, 218/7 and 220/8
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 75766
Total ARIN prefixes after maximum aggregation: 47790
Prefixes being announced from the ARIN address blocks: 53927
Unique aggregates announced from the ARIN address blocks: 16653
ARIN Region origin ASes present in the Internet Routing Table: 7767
ARIN Region origin ASes announcing only one prefix: 2468
ARIN Region transit ASes present in the Internet Routing Table: 760
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 18
Number of ARIN addresses announced to Internet: 192059076
Equivalent to 11 /8s, 114 /16s and 150 /24s
Percentage of available ARIN address space announced: 71.5
ARIN AS Blocks 1 - 1876, 1902 - 2042, 2044 - 2046, 2048 - 2106
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 - 26623
ARIN Address Blocks 24/8, 63/8, 64/6, 68/8, 199/8, 200/8, 204/6,
208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 19340
Total RIPE prefixes after maximum aggregation: 14508
Prefixes being announced from the RIPE address blocks: 15977
Unique aggregates announced from the RIPE address blocks: 10567
RIPE Region origin ASes present in the Internet Routing Table: 3811
RIPE Region origin ASes announcing only one prefix: 2043
RIPE Region transit ASes present in the Internet Routing Table: 697
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 16
Number of RIPE addresses announced to Internet: 110117664
Equivalent to 6 /8s, 144 /16s and 67 /24s
Percentage of available RIPE address space announced: 72.9
RIPE AS Blocks 1877 - 1901, 2043, 2047, 2107 - 2136, 2585 - 2614
2773 - 2822, 2830 - 2879, 3154 - 3353, 5377 - 5631
6656 - 6911, 8192 - 9215, 12288 - 13311, 15360 - 16383
20480 - 21503, 24576 - 25599
RIPE Address Blocks 62/8, 80/7, 193/8, 194/7, 212/7 and 217/8
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1221 1268 1223 911 Telstra Pty Ltd
4538 482 1258 18 China Education and Research
2907 427 1861 368 SINET Japan
703 406 339 326 UUNET Technologies, Inc.
2764 393 360 358 connect.com.au pty ltd
7474 308 292 204 Optus Communications Pty Ltd
17557 289 19 112 Pakistan Telecom
4134 277 2100 94 Data Communications Bureau
9443 266 44 63 Primus Telecommunications
4755 248 109 79 Videsh Sanchar Nigam Ltd. Aut
4766 227 1517 158 Korea Internet Exchange for "
4814 178 70 12 China Telecom (Group) - Beiji
9583 177 32 5 Satyam Infoway Ltd.,
7539 153 218 147 TANet2, sponsored by NSC, TAI
9768 147 387 76 Korea Telecom
17676 144 2226 22 XTAGE CORPORATION
7657 136 22 86 The Internet Group Limited
4780 116 186 39 Digital United Inc.
4713 115 1009 106 NTT Communications Corporatio
9800 114 186 22 CHINA UNICOM
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1116 2603 844 UUNET Technologies, Inc.
3301 398 908 349 TeliaNet Sweden
3352 278 521 27 Ibernet, Internet Access Netw
3215 266 599 165 France Telecom / &Equant
5515 263 783 175 Sonera Finland Autonomous Sys
3320 236 1947 181 Deutsche Telekom AG
680 231 2149 230 DFN-IP service G-WiN
1257 205 430 202 SWIPnet Swedish IP Network
5400 200 83 95 Concert European Core Network
719 187 290 126 LANLINK autonomous system
786 182 1874 182 The JANET IP Service
8708 148 23 140 Romania Data Systems S.A.
12302 133 10 46 MobiFon S.A.
2856 125 789 115 BTnet UK Regional network
3303 117 546 116 Swisscom Ltd
8297 117 57 65 Teleglobe Autonomous System i
3269 113 692 70 TELECOM ITALIA
3246 107 300 101 Song Networks / Clinet
3233 106 7 52 RNC - Romanian Natioanal R&D
5511 105 191 87 France Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2005 8882 1439 UUNET Technologies, Inc.
7018 1288 7543 933 AT&T
3908 903 1641 493 Supernet, Inc.
1239 825 3438 654 Sprint
1 815 8168 453 BBN Planet
852 795 1175 445 Telus Advanced Communications
7046 645 934 435 UUNET Technologies, Inc.
4323 634 436 257 Time Warner Communications, I
705 586 122 290 UUNET Technologies, Inc.
209 585 1969 326 Qwest
690 582 79 379 Merit Network
7132 570 606 138 Southwestern Bell Internet Se
3549 513 854 319 Global Crossing
7843 500 357 70 Adelphia Corp.
7066 475 202 248 Virginia Polytechnic Institut
2914 396 2108 389 Verio, Inc.
15290 391 299 204 AT&T Canada IES
2149 346 191 287 Performance Systems, Inc.
3741 345 731 236 The Internet Solution
6197 340 245 164 BellSouth Network Solutions,
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4538 482 464 China Education and Research
7132 570 432 Southwestern Bell Internet Se
7843 500 430 Adelphia Corp.
3908 903 410 Supernet, Inc.
4323 634 377 Time Warner Communications, I
1 815 362 BBN Planet
1221 1268 357 Telstra Pty Ltd
7018 1288 355 AT&T
852 795 350 Telus Advanced Communications
705 586 296 UUNET Technologies, Inc.
11371 292 286 Rhythms NetConnections
702 1116 272 UUNET Technologies, Inc.
4151 288 272 USDA
209 585 259 Qwest
6347 337 258 SAVVIS Communications Corpora
3352 278 251 Ibernet, Internet Access Netw
7029 262 247 Alltel Information Services,
4355 280 244 EarthLink, Inc.
7066 475 227 Virginia Polytechnic Institut
18566 222 218 Covad Communications
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies,
Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------
Prefix Origin AS Description
192.0.2.0/24 1103 SURFnet BV
Advertised Unregistered Addresses
---------------------------------
Network Origin AS Description
39.0.0.0/8 4554 Exchange Point Blocks
132.0.0.0/10 568 DISO-UNRRA
134.137.0.0/16 7170 AT&T Government Markets
135.0.0.0/13 10455 Lucent Technologies
137.0.0.0/13 568 DISO-UNRRA
138.94.0.0/16 1 BBN Planet
154.150.0.0/16 6494 IDCI
158.0.0.0/13 568 DISO-UNRRA
164.233.0.0/16 6020 DISA NETWORK SERVICES
192.26.98.0/24 1239 Sprint
192.44.0.0/19 702 UUNET Technologies, Inc.
192.72.0.0/18 4780 Digital United Inc.
192.72.0.0/16 4780 Digital United Inc.
192.83.14.0/24 5515 Sonera Finland Autonomous Sys
192.83.16.0/20 5515 Sonera Finland Autonomous Sys
192.83.25.0/24 5515 Sonera Finland Autonomous Sys
192.83.32.0/19 5515 Sonera Finland Autonomous Sys
192.83.96.0/22 5515 Sonera Finland Autonomous Sys
192.83.100.0/24 5515 Sonera Finland Autonomous Sys
192.91.198.0/24 2568 CTS Network Services
192.92.167.0/24 297 NASA Science Network
192.119.135.0/24 270 NASA
192.135.50.0/24 7018 AT&T
192.135.248.0/23 109 Cisco Systems, Inc.
192.136.79.0/24 719 LANLINK autonomous system
192.136.86.0/24 719 LANLINK autonomous system
192.136.87.0/24 719 LANLINK autonomous system
192.136.88.0/24 719 LANLINK autonomous system
192.139.62.0/24 6539 GT Group Telecom Services Cor
192.140.0.0/16 5511 France Telecom
192.152.213.0/24 1239 Sprint
192.153.136.0/21 568 DISO-UNRRA
192.156.0.0/19 568 DISO-UNRRA
192.172.0.0/19 568 DISO-UNRRA
192.195.253.0/24 237 Merit Network
192.208.29.0/24 3908 Supernet, Inc.
192.208.30.0/23 3908 Supernet, Inc.
192.243.36.0/23 7168 Northwest Link
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:20 /9:6 /10:7 /11:12 /12:34
/13:84 /14:231 /15:414 /16:7222 /17:1438 /18:2593
/19:7575 /20:7181 /21:5098 /22:7790 /23:9505 /24:63292
/25:207 /26:180 /27:81 /28:83 /29:41 /30:89
/31:1 /32:24
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
702 709 1116 UUNET Technologies, Inc.
701 556 2005 UUNET Technologies, Inc.
3908 490 903 Supernet, Inc.
690 454 582 Merit Network
705 396 586 UUNET Technologies, Inc.
7066 380 475 Virginia Polytechnic Institut
7018 336 1288 AT&T
7843 300 500 Adelphia Corp.
7046 282 645 UUNET Technologies, Inc.
209 264 585 Qwest
1 257 815 BBN Planet
7029 247 262 Alltel Information Services,
6197 245 340 BellSouth Network Solutions,
11371 245 292 Rhythms NetConnections
3301 238 398 TeliaNet Sweden
6198 231 317 BellSouth Network Solutions,
6517 222 244 Yipes Communications, Inc.
18566 218 222 Covad Communications
3549 214 513 Global Crossing
1239 211 825 Sprint
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 9:1 12:511 13:10 15:2 17:6
20:2 24:779 25:1 32:40 38:8 40:6
44:1 57:13 61:233 62:235 63:1929 64:1226
65:1501 66:959 67:80 68:18 80:234 81:24
128:60 129:138 130:23 131:47 132:11 133:3
134:119 135:8 136:246 137:91 138:150 139:57
140:174 141:119 142:77 143:38 144:152 145:11
146:174 147:138 148:200 149:92 150:39 151:97
152:267 153:54 154:14 155:96 156:75 157:132
158:68 159:128 160:18 161:62 162:147 163:100
164:273 165:140 166:230 167:174 168:119 169:58
170:348 171:2 192:5507 193:2423 194:2137 195:962
196:439 198:3711 199:3236 200:2568 202:3130 203:4568
204:3255 205:2169 206:2600 207:2722 208:2665 209:2744
210:595 211:223 212:903 213:621 214:9 215:19
216:3011 217:457 218:27
End of report
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