Weekly Routing Table Report
Routing Table Analysis
cscora at thyme.apnic.net
Fri Jan 4 05:04:32 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 04 Jan, 2002
Analysis Summary
----------------
BGP routing table entries examined: 106715
Prefixes after maximum aggregation: 71378
Unique aggregates announced to Internet: 51984
Total ASes present in the Internet Routing Table: 12269
Origin-only ASes present in the Internet Routing Table: 10659
Origin ASes announcing only one prefix: 4619
Transit ASes present in the Internet Routing Table: 1610
Transit-only ASes present in the Internet Routing Table: 52
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: 9
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: 1163873544
Equivalent to 69 /8s, 95 /16s and 77 /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: 71507
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 16569
Total APNIC prefixes after maximum aggregation: 10381
Prefixes being announced from the APNIC address blocks: 15196
Unique aggregates announced from the APNIC address blocks: 9754
APNIC Region origin ASes present in the Internet Routing Table: 1417
APNIC Region origin ASes announcing only one prefix: 460
APNIC Region transit ASes present in the Internet Routing Table: 244
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 78241984
Equivalent to 4 /8s, 169 /16s and 224 /24s
Percentage of available APNIC address space announced: 57.8
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: 72289
Total ARIN prefixes after maximum aggregation: 47115
Prefixes being announced from the ARIN address blocks: 51975
Unique aggregates announced from the ARIN address blocks: 16922
ARIN Region origin ASes present in the Internet Routing Table: 7271
ARIN Region origin ASes announcing only one prefix: 2256
ARIN Region transit ASes present in the Internet Routing Table: 725
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 181949896
Equivalent to 10 /8s, 216 /16s and 85 /24s
Percentage of available ARIN address space announced: 67.8
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: 17850
Total RIPE prefixes after maximum aggregation: 13882
Prefixes being announced from the RIPE address blocks: 14557
Unique aggregates announced from the RIPE address blocks: 9718
RIPE Region origin ASes present in the Internet Routing Table: 3529
RIPE Region origin ASes announcing only one prefix: 1903
RIPE Region transit ASes present in the Internet Routing Table: 631
Average RIPE Region AS path length visible: 5.8
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 105295872
Equivalent to 6 /8s, 70 /16s and 176 /24s
Percentage of available RIPE address space announced: 69.7
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 1343 1259 985 Telstra Pty Ltd
703 400 348 307 UUNET Technologies, Inc.
2764 399 378 373 connect.com.au pty ltd
2907 390 1891 360 SINET Japan
4755 315 115 88 Videsh Sanchar Nigam Ltd. Aut
7474 310 285 202 Optus Communications Pty Ltd
4134 268 1874 98 Data Communications Bureau
4766 189 1396 139 Korea Internet Exchange for "
17557 175 13 86 Pakistan Telecom
9443 173 45 69 Primus Telecommunications
1659 165 924 34 Taiwan Academic Network (TANe
9583 159 32 5 Satyam Infoway Ltd.,
4740 149 34 123 OzEmail ISP
4812 143 288 36 China Telecom (Group) - Shang
9768 143 381 87 Korea Telecom
7657 126 22 85 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 112 194 21 CHINA UNICOM
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1089 2669 857 UUNET Technologies, Inc.
3301 401 925 353 TeliaNet Sweden
1257 253 489 250 SWIPnet Swedish IP Network
680 233 2149 231 DFN-IP service G-WiN
3215 233 562 152 France Telecom / &Equant
5515 216 705 176 Sonera Finland Autonomous Sys
3320 202 1961 170 Deutsche Telekom AG
786 180 1873 180 The JANET IP Service
719 164 289 118 LANLINK autonomous system
5400 148 60 85 Concert European Core Network
8708 145 20 139 Romania Data Systems S.A.
5549 140 78 64 Nextra Deutschland GmbH + Co.
2856 136 777 125 BTnet UK Regional network
3303 134 575 124 Swisscom Ltd
3269 115 663 70 TELECOM ITALIA
12302 111 7 35 MobiFon S.A.
517 109 230 107 KPNQwest Germany GmbH
8297 108 31 62 Teleglobe Autonomous System i
1290 96 396 71 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 2137 8786 1519 UUNET Technologies, Inc.
7018 1121 7412 876 AT&T
3967 902 359 427 Exodus Communication
1 869 8408 645 BBN Planet
3908 776 1639 479 Supernet, Inc.
1239 766 3180 600 Sprint
8010 714 62 11 PublicNet Communications, Inc
7046 688 822 439 UUNET Technologies, Inc.
4323 585 364 201 Time Warner Communications, I
852 580 978 384 Telus Advanced Communications
690 533 76 318 Merit Network
209 512 1861 296 Qwest
705 472 349 296 UUNET Technologies, Inc.
2914 459 2210 430 Verio, Inc.
3549 403 836 201 Global Crossing
7132 402 470 168 Southwestern Bell Internet Se
2149 396 230 333 Performance Systems, Inc.
3561 378 2253 328 Cable & Wireless USA
4151 363 704 16 USDA
577 352 588 220 Bell Advanced Communications
Global Per AS Maximum Aggr summary
----------------------------------
ASN Net Savings Description
8010 703 PublicNet Communications, Inc
3967 475 Exodus Communication
4323 384 Time Warner Communications, I
1221 358 Telstra Pty Ltd
4151 347 USDA
3908 297 Supernet, Inc.
11371 271 Rhythms NetConnections
7046 249 UUNET Technologies, Inc.
7018 245 AT&T
6347 237 SAVVIS Communications Corpora
7132 234 Southwestern Bell Internet Se
702 232 UUNET Technologies, Inc.
4755 227 Videsh Sanchar Nigam Ltd. Aut
1 224 BBN Planet
209 216 Qwest
690 215 Merit Network
3549 202 Global Crossing
4355 199 EarthLink, Inc.
852 196 Telus Advanced Communications
6517 196 Yipes Communications, Inc.
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
2027 UNALLOCATED 150.185.128.0/18 8143 Publicom Corp.
65021 PRIVATE 203.75.135.0/27 3462 Data Communication B
65021 PRIVATE 203.75.210.129/32 3462 Data Communication B
65021 PRIVATE 203.75.210.130/32 3462 Data Communication B
65021 PRIVATE 203.75.210.131/32 3462 Data Communication B
65021 PRIVATE 203.75.210.132/32 3462 Data Communication B
65021 PRIVATE 203.75.232.0/27 3462 Data Communication B
65021 PRIVATE 203.75.232.160/27 3462 Data Communication B
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
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 /8:19 /9:5 /10:7 /11:11 /12:37
/13:91 /14:230 /15:392 /16:7059 /17:1364 /18:2468
/19:7184 /20:6299 /21:4734 /22:7150 /23:8845 /24:59937
/25:233 /26:240 /27:150 /28:95 /29:79 /30:72
/31:0 /32:14
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1365 2137 UUNET Technologies, Inc.
1221 1197 1343 Telstra Pty Ltd
3967 719 902 Exodus Communication
702 706 1089 UUNET Technologies, Inc.
8010 698 714 PublicNet Communications, Inc
7018 584 1121 AT&T
3908 534 776 Supernet, Inc.
690 530 533 Merit Network
7046 523 688 UUNET Technologies, Inc.
4323 495 585 Time Warner Communications, I
1239 444 766 Sprint
1 443 869 BBN Planet
852 369 580 Telus Advanced Communications
705 355 472 UUNET Technologies, Inc.
2764 353 399 connect.com.au pty ltd
209 338 512 Qwest
703 324 400 UUNET Technologies, Inc.
4151 316 363 USDA
2149 298 396 Performance Systems, Inc.
7474 275 310 Optus Communications Pty Ltd
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 9:1 12:444 13:10 15:2 17:5
20:1 24:778 25:1 32:73 38:13 40:4
43:1 44:2 52:1 53:2 57:13 61:210
62:160 63:1912 64:1483 65:968 66:757 67:23
68:10 80:132 128:62 129:110 130:25 131:41
132:14 133:2 134:107 135:10 136:47 137:107
138:62 139:30 140:103 141:57 142:53 143:43
144:57 145:12 146:200 147:94 148:155 149:88
150:39 151:37 152:379 153:34 154:8 155:81
156:82 157:121 158:70 159:78 160:26 161:54
162:85 163:121 164:119 165:103 166:202 167:160
168:114 169:47 170:299 171:2 191:1 192:5330
193:2054 194:2063 195:853 196:430 198:3703 199:3293
200:2410 201:1 202:2854 203:4490 204:3254 205:2178
206:2591 207:2625 208:2605 209:2960 210:539 211:152
212:882 213:550 214:9 215:17 216:2937 217:395
218:12
End of report
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