Weekly Routing Table Report
Routing Table Analysis
cscora at thyme.apnic.net
Fri Jan 11 05:08:19 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 11 Jan, 2002
Analysis Summary
----------------
BGP routing table entries examined: 108327
Prefixes after maximum aggregation: 71971
Unique aggregates announced to Internet: 52102
Total ASes present in the Internet Routing Table: 12321
Origin-only ASes present in the Internet Routing Table: 10681
Origin ASes announcing only one prefix: 4609
Transit ASes present in the Internet Routing Table: 1640
Transit-only ASes present in the Internet Routing Table: 54
Average AS path length visible in the Internet Routing Table: 5.4
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: 15
Number of addresses announced to Internet: 1160494316
Equivalent to 69 /8s, 43 /16s and 188 /24s
Percentage of available address space announced: 31.3
Percentage of allocated address space announced: 59.3
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 72622
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17236
Total APNIC prefixes after maximum aggregation: 10573
Prefixes being announced from the APNIC address blocks: 15769
Unique aggregates announced from the APNIC address blocks: 9775
APNIC Region origin ASes present in the Internet Routing Table: 1429
APNIC Region origin ASes announcing only one prefix: 461
APNIC Region transit ASes present in the Internet Routing Table: 249
Average APNIC Region AS path length visible: 5.4
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 78576448
Equivalent to 4 /8s, 174 /16s and 251 /24s
Percentage of available APNIC address space announced: 58.1
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: 73241
Total ARIN prefixes after maximum aggregation: 47487
Prefixes being announced from the ARIN address blocks: 52561
Unique aggregates announced from the ARIN address blocks: 17034
ARIN Region origin ASes present in the Internet Routing Table: 7308
ARIN Region origin ASes announcing only one prefix: 2251
ARIN Region transit ASes present in the Internet Routing Table: 747
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 182810916
Equivalent to 10 /8s, 229 /16s and 121 /24s
Percentage of available ARIN address space announced: 68.1
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: 17848
Total RIPE prefixes after maximum aggregation: 13911
Prefixes being announced from the RIPE address blocks: 14578
Unique aggregates announced from the RIPE address blocks: 9707
RIPE Region origin ASes present in the Internet Routing Table: 3531
RIPE Region origin ASes announcing only one prefix: 1897
RIPE Region transit ASes present in the Internet Routing Table: 634
Average RIPE Region AS path length visible: 5.8
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 105449984
Equivalent to 6 /8s, 73 /16s and 10 /24s
Percentage of available RIPE address space announced: 69.8
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
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 1332 1241 985 Telstra Pty Ltd
4538 448 1098 14 China Education and Research
2764 400 378 374 connect.com.au pty ltd
703 397 337 304 UUNET Technologies, Inc.
2907 395 1940 363 SINET Japan
4755 323 116 95 Videsh Sanchar Nigam Ltd. Aut
7474 313 285 204 Optus Communications Pty Ltd
4134 268 1858 100 Data Communications Bureau
4766 198 1380 145 Korea Internet Exchange for "
17557 176 14 87 Pakistan Telecom
9443 172 45 68 Primus Telecommunications
9583 158 32 5 Satyam Infoway Ltd.,
4740 145 34 119 OzEmail ISP
9768 145 381 88 Korea Telecom
1659 144 924 34 Taiwan Academic Network (TANe
7657 123 21 83 The Internet Group Limited
17676 121 1920 7 XTAGE CORPORATION
4780 117 186 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 1086 2635 859 UUNET Technologies, Inc.
3301 399 908 352 TeliaNet Sweden
1257 254 489 248 SWIPnet Swedish IP Network
680 233 2149 231 DFN-IP service G-WiN
3215 232 562 151 France Telecom / &Equant
5515 216 705 176 Sonera Finland Autonomous Sys
3320 201 1961 169 Deutsche Telekom AG
786 182 1874 182 The JANET IP Service
719 164 289 118 LANLINK autonomous system
8708 152 20 139 Romania Data Systems S.A.
5400 147 60 86 Concert European Core Network
5549 143 78 65 Nextra Deutschland GmbH + Co.
2856 136 777 125 BTnet UK Regional network
3303 126 575 124 Swisscom Ltd
3269 115 663 70 TELECOM ITALIA
12302 112 7 36 MobiFon S.A.
8297 110 37 62 Teleglobe Autonomous System i
517 107 230 105 KPNQwest Germany GmbH
1290 97 412 72 PSINet UK Ltd.
5511 95 192 79 France Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2143 8790 1533 UUNET Technologies, Inc.
7018 1152 7483 897 AT&T
1 874 8393 647 BBN Planet
3908 801 1638 475 Supernet, Inc.
1239 781 3157 604 Sprint
3967 770 361 332 Exodus Communication
8010 715 62 11 PublicNet Communications, Inc
7046 684 822 440 UUNET Technologies, Inc.
4323 612 412 215 Time Warner Communications, I
852 582 979 384 Telus Advanced Communications
690 547 77 323 Merit Network
209 511 1876 298 Qwest
705 488 437 302 UUNET Technologies, Inc.
2914 459 2210 428 Verio, Inc.
4293 425 92 315 Cable & Wireless USA
7132 416 481 161 Southwestern Bell Internet Se
3549 409 831 209 Global Crossing
2149 392 214 328 Performance Systems, Inc.
3561 375 2220 322 Cable & Wireless USA
4151 364 704 16 USDA
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
8010 715 704 PublicNet Communications, Inc
3967 770 438 Exodus Communication
4538 448 434 China Education and Research
4323 612 397 Time Warner Communications, I
4151 364 348 USDA
1221 1332 347 Telstra Pty Ltd
3908 801 326 Supernet, Inc.
11371 278 271 Rhythms NetConnections
7018 1152 255 AT&T
7132 416 255 Southwestern Bell Internet Se
7046 684 244 UUNET Technologies, Inc.
6347 325 242 SAVVIS Communications Corpora
4755 323 228 Videsh Sanchar Nigam Ltd. Aut
702 1086 227 UUNET Technologies, Inc.
1 874 227 BBN Planet
690 547 224 Merit Network
209 511 213 Qwest
3549 409 200 Global Crossing
4355 229 199 EarthLink, Inc.
852 582 198 Telus Advanced Communications
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
65003 PRIVATE 64.80.126.0/23 15270 PaeTec.net -a divisi
5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies,
24583 UNALLOCATED 212.104.84.0/24 702 UUNET Technologies,
Advertised Unregistered Addresses
---------------------------------
Network Origin AS Description
39.0.0.0/8 4554 Exchange Point Blocks
132.0.0.0/10 568 DISO-UNRRA
134.137.0.0/16 400 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.
153.34.0.0/15 701 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
191.9.200.0/24 1290 PSINet UK Ltd.
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 /12:38
/13:92 /14:230 /15:393 /16:7146 /17:1404 /18:2470
/19:7241 /20:6539 /21:4834 /22:7264 /23:8998 /24:60685
/25:231 /26:228 /27:133 /28:98 /29:75 /30:136
/31:0 /32:49
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1372 2143 UUNET Technologies, Inc.
1221 1185 1332 Telstra Pty Ltd
702 705 1086 UUNET Technologies, Inc.
8010 699 715 PublicNet Communications, Inc
7018 602 1152 AT&T
3967 584 770 Exodus Communication
3908 559 801 Supernet, Inc.
690 543 547 Merit Network
7046 518 684 UUNET Technologies, Inc.
4323 506 612 Time Warner Communications, I
1239 453 781 Sprint
1 448 874 BBN Planet
4293 412 425 Cable & Wireless USA
852 368 582 Telus Advanced Communications
705 358 488 UUNET Technologies, Inc.
2764 355 400 connect.com.au pty ltd
209 337 511 Qwest
703 324 397 UUNET Technologies, Inc.
4151 317 364 USDA
2149 296 392 Performance Systems, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 7:1 9:1 12:454 13:10 15:2
17:5 20:1 24:779 25:1 32:74 38:13
40:4 43:1 44:2 52:1 57:14 61:226
62:152 63:1909 64:1497 65:994 66:760 67:25
68:15 80:139 128:63 129:119 130:23 131:44
132:13 133:2 134:121 135:10 136:120 137:101
138:62 139:30 140:72 141:57 142:64 143:41
144:54 145:12 146:214 147:60 148:164 149:88
150:39 151:43 152:386 153:34 154:7 155:85
156:81 157:117 158:72 159:76 160:26 161:54
162:96 163:129 164:125 165:112 166:217 167:160
168:113 169:47 170:281 171:2 191:1 192:5396
193:2064 194:2052 195:857 196:430 198:3735 199:3264
200:2393 201:1 202:2903 203:4518 204:3297 205:2187
206:2743 207:2736 208:2815 209:2889 210:552 211:152
212:874 213:515 214:7 215:16 216:2947 217:411
218:12
End of report
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