Weekly Routing Table Report
Routing Table Analysis
cscora at thyme.apnic.net
Fri Jan 25 05:04:40 EST 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 25 Jan, 2002
Analysis Summary
----------------
BGP routing table entries examined: 107651
Prefixes after maximum aggregation: 71781
Unique aggregates announced to Internet: 52429
Total ASes present in the Internet Routing Table: 12435
Origin-only ASes present in the Internet Routing Table: 10766
Origin ASes announcing only one prefix: 4691
Transit ASes present in the Internet Routing Table: 1669
Transit-only ASes present in the Internet Routing Table: 57
Average AS path length visible in the Internet Routing Table: 5.3
Max AS path length visible: 16
Illegal AS announcements present in the Routing Table: 3
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from the IANA Reserved Address blocks: 14
Number of addresses announced to Internet: 1162813064
Equivalent to 69 /8s, 79 /16s and 30 /24s
Percentage of available address space announced: 31.4
Percentage of allocated address space announced: 59.4
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 71770
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17200
Total APNIC prefixes after maximum aggregation: 10593
Prefixes being announced from the APNIC address blocks: 15701
Unique aggregates announced from the APNIC address blocks: 9832
APNIC Region origin ASes present in the Internet Routing Table: 1441
APNIC Region origin ASes announcing only one prefix: 477
APNIC Region transit ASes present in the Internet Routing Table: 250
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 78769984
Equivalent to 4 /8s, 177 /16s and 239 /24s
Percentage of available APNIC address space announced: 58.2
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: 72496
Total ARIN prefixes after maximum aggregation: 47251
Prefixes being announced from the ARIN address blocks: 51282
Unique aggregates announced from the ARIN address blocks: 17117
ARIN Region origin ASes present in the Internet Routing Table: 7354
ARIN Region origin ASes announcing only one prefix: 2277
ARIN Region transit ASes present in the Internet Routing Table: 755
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 184793284
Equivalent to 11 /8s, 3 /16s and 184 /24s
Percentage of available ARIN address space announced: 68.8
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
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: 17955
Total RIPE prefixes after maximum aggregation: 13937
Prefixes being announced from the RIPE address blocks: 14724
Unique aggregates announced from the RIPE address blocks: 9818
RIPE Region origin ASes present in the Internet Routing Table: 3582
RIPE Region origin ASes announcing only one prefix: 1937
RIPE Region transit ASes present in the Internet Routing Table: 653
Average RIPE Region AS path length visible: 5.8
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 106183936
Equivalent to 6 /8s, 84 /16s and 61 /24s
Percentage of available RIPE address space announced: 70.3
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 1337 1260 976 Telstra Pty Ltd
4538 450 1162 16 China Education and Research
2764 397 377 371 connect.com.au pty ltd
2907 396 1910 366 SINET Japan
703 389 324 296 UUNET Technologies, Inc.
7474 300 286 205 Optus Communications Pty Ltd
4755 299 113 88 Videsh Sanchar Nigam Ltd. Aut
4134 268 1858 100 Data Communications Bureau
4766 198 1393 145 Korea Internet Exchange for "
17557 188 14 88 Pakistan Telecom
9443 160 44 59 Primus Telecommunications
9768 145 385 88 Korea Telecom
1659 143 908 33 Taiwan Academic Network (TANe
4740 143 34 117 OzEmail ISP
9583 137 32 5 Satyam Infoway Ltd.,
7657 125 22 85 The Internet Group Limited
7539 121 116 120 TANet2, sponsored by NSC, TAI
4780 116 186 40 Digital United Inc.
4713 115 894 102 NTT Communications Corporatio
9800 113 193 22 CHINA UNICOM
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1116 2622 862 UUNET Technologies, Inc.
3301 398 924 351 TeliaNet Sweden
1257 253 487 249 SWIPnet Swedish IP Network
3215 236 562 153 France Telecom / &Equant
680 235 2149 233 DFN-IP service G-WiN
5515 218 705 175 Sonera Finland Autonomous Sys
3320 190 1961 168 Deutsche Telekom AG
5400 186 77 92 Concert European Core Network
786 182 1874 182 The JANET IP Service
719 164 289 118 LANLINK autonomous system
8708 149 20 139 Romania Data Systems S.A.
2856 135 775 124 BTnet UK Regional network
3303 124 575 124 Swisscom Ltd
3269 118 695 72 TELECOM ITALIA
8297 117 40 66 Teleglobe Autonomous System i
12302 115 7 36 MobiFon S.A.
517 103 227 101 KPNQwest Germany GmbH
1290 94 411 69 PSINet UK Ltd.
1267 92 1471 42 Infostrada S.p.A.
5511 91 192 80 France Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2091 8307 1511 UUNET Technologies, Inc.
7018 1744 7561 977 AT&T
1 841 8264 613 BBN Planet
3908 786 1656 464 Supernet, Inc.
1239 775 3157 604 Sprint
7046 641 837 422 UUNET Technologies, Inc.
4323 623 414 222 Time Warner Communications, I
852 564 978 364 Telus Advanced Communications
209 518 1875 295 Qwest
690 510 74 313 Merit Network
2914 453 2193 422 Verio, Inc.
7132 449 504 159 Southwestern Bell Internet Se
705 432 190 284 UUNET Technologies, Inc.
3549 428 835 221 Global Crossing
2149 395 214 331 Performance Systems, Inc.
2386 385 354 244 AT&T Data Communications Serv
3561 381 2236 331 Cable & Wireless USA
3967 379 372 205 Exodus Communication
3741 350 731 239 The Internet Solution
577 349 604 219 Bell Advanced Communications
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
7018 1744 767 AT&T
4538 450 434 China Education and Research
4323 623 401 Time Warner Communications, I
1221 1337 361 Telstra Pty Ltd
3908 786 322 Supernet, Inc.
4151 337 321 USDA
7132 449 290 Southwestern Bell Internet Se
11371 278 271 Rhythms NetConnections
702 1116 254 UUNET Technologies, Inc.
6347 312 237 SAVVIS Communications Corpora
1 841 228 BBN Planet
209 518 223 Qwest
7843 258 220 Adelphia Corp.
7046 641 219 UUNET Technologies, Inc.
4755 299 211 Videsh Sanchar Nigam Ltd. Aut
3549 428 207 Global Crossing
4355 237 207 EarthLink, Inc.
852 564 200 Telus Advanced Communications
690 510 197 Merit Network
6172 240 189 @Home Network
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
23098 UNALLOCATED 144.9.72.0/24 12179 InterNAP Network Ser
23098 UNALLOCATED 144.9.73.0/24 12179 InterNAP Network Ser
5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies,
Advertised Unregistered Addresses
---------------------------------
Network Origin AS Description
39.0.0.0/8 4554 Exchange Point Blocks
126.0.0.0/8 7336 Compass Communications
132.0.0.0/10 568 DISO-UNRRA
134.137.0.0/16 400 Headquarters Standard Systems
135.0.0.0/13 10455 Lucent Technologies
137.0.0.0/13 568 DISO-UNRRA
138.94.0.0/16 1 BBN Planet
144.7.0.0/16 701 UUNET Technologies, Inc.
153.36.0.0/14 701 UUNET Technologies, Inc.
154.150.0.0/16 6494 IDCI
158.0.0.0/13 568 DISO-UNRRA
164.233.0.0/16 6020 DISA NETWORK SERVICES
164.235.0.0/16 6025 US DOD NIC Unregistered
201.115.100.0/24 7018 AT&T
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:18 /9:6 /10:7 /11:12 /12:37
/13:92 /14:231 /15:390 /16:7138 /17:1410 /18:2488
/19:7305 /20:6672 /21:4810 /22:7291 /23:8939 /24:59959
/25:216 /26:205 /27:111 /28:83 /29:58 /30:135
/31:0 /32:38
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1336 2091 UUNET Technologies, Inc.
1221 1187 1337 Telstra Pty Ltd
7018 1153 1744 AT&T
702 739 1116 UUNET Technologies, Inc.
3908 539 786 Supernet, Inc.
4323 512 623 Time Warner Communications, I
690 506 510 Merit Network
7046 470 641 UUNET Technologies, Inc.
1239 458 775 Sprint
1 434 841 BBN Planet
2764 352 397 connect.com.au pty ltd
705 351 432 UUNET Technologies, Inc.
852 351 564 Telus Advanced Communications
209 340 518 Qwest
703 316 389 UUNET Technologies, Inc.
2386 309 385 AT&T Data Communications Serv
2149 298 395 Performance Systems, Inc.
3549 296 428 Global Crossing
4151 291 337 USDA
7066 275 304 Virginia Polytechnic Institut
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 9:1 12:735 13:10 15:1 17:5
20:1 24:701 25:1 32:180 38:12 40:4
44:2 57:14 61:211 62:169 63:1878 64:1096
65:997 66:614 67:33 68:19 80:167 81:4
128:60 129:134 130:23 131:49 132:13 133:2
134:121 135:10 136:124 137:104 138:61 139:29
140:94 141:58 142:65 143:38 144:56 145:12
146:216 147:62 148:142 149:86 150:39 151:43
152:381 153:34 154:8 155:83 156:81 157:83
158:73 159:86 160:26 161:54 162:96 163:125
164:91 165:115 166:225 167:161 168:121 169:48
170:283 171:4 192:5399 193:2123 194:2033 195:792
196:436 198:3740 199:3256 200:2313 201:1 202:2898
203:4512 204:3299 205:2149 206:2601 207:2645 208:2580
209:2911 210:531 211:152 212:878 213:589 214:7
215:16 216:2970 217:440 218:12
End of report
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