Weekly Routing Table Report
Routing Table Analysis
cscora at thyme.apnic.net
Fri Dec 28 05:04:12 EST 2001
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 Fri 28 Dec, 2001
Analysis Summary
----------------
BGP routing table entries examined: 106638
Prefixes after maximum aggregation: 71492
Unique aggregates announced to Internet: 51988
Total ASes present in the Internet Routing Table: 12270
Origin-only ASes present in the Internet Routing Table: 10667
Origin ASes announcing only one prefix: 4616
Transit ASes present in the Internet Routing Table: 1603
Transit-only ASes present in the Internet Routing Table: 54
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: 1162349320
Equivalent to 69 /8s, 72 /16s and 11 /24s
Percentage of available address space announced: 31.4
Percentage of allocated address space announced: 59.3
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 71508
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 16591
Total APNIC prefixes after maximum aggregation: 10414
Prefixes being announced from the APNIC address blocks: 15192
Unique aggregates announced from the APNIC address blocks: 9760
APNIC Region origin ASes present in the Internet Routing Table: 1418
APNIC Region origin ASes announcing only one prefix: 457
APNIC Region transit ASes present in the Internet Routing Table: 237
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 77885632
Equivalent to 4 /8s, 164 /16s and 112 /24s
Percentage of available APNIC address space announced: 57.6
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: 72227
Total ARIN prefixes after maximum aggregation: 47201
Prefixes being announced from the ARIN address blocks: 51936
Unique aggregates announced from the ARIN address blocks: 16941
ARIN Region origin ASes present in the Internet Routing Table: 7272
ARIN Region origin ASes announcing only one prefix: 2258
ARIN Region transit ASes present in the Internet Routing Table: 728
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 181020360
Equivalent to 10 /8s, 202 /16s and 38 /24s
Percentage of available ARIN address space announced: 67.4
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: 17813
Total RIPE prefixes after maximum aggregation: 13877
Prefixes being announced from the RIPE address blocks: 14523
Unique aggregates announced from the RIPE address blocks: 9693
RIPE Region origin ASes present in the Internet Routing Table: 3526
RIPE Region origin ASes announcing only one prefix: 1901
RIPE Region transit ASes present in the Internet Routing Table: 628
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 105145088
Equivalent to 6 /8s, 68 /16s and 99 /24s
Percentage of available RIPE address space announced: 69.6
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 1333 1258 986 Telstra Pty Ltd
2764 403 378 377 connect.com.au pty ltd
703 400 344 307 UUNET Technologies, Inc.
2907 395 1891 361 SINET Japan
7474 311 285 202 Optus Communications Pty Ltd
4755 290 113 83 Videsh Sanchar Nigam Ltd. Aut
4134 268 1874 98 Data Communications Bureau
4766 185 1395 135 Korea Internet Exchange for "
1659 175 924 34 Taiwan Academic Network (TANe
9443 173 45 69 Primus Telecommunications
17557 169 13 86 Pakistan Telecom
9583 152 32 3 Satyam Infoway Ltd.,
4740 149 34 123 OzEmail ISP
9768 141 381 87 Korea Telecom
4812 137 192 34 China Telecom (Group) - Shang
7657 124 21 83 The Internet Group Limited
17676 121 1920 7 XTAGE CORPORATION
4780 117 186 42 Digital United Inc.
4713 116 910 103 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 1091 2673 862 UUNET Technologies, Inc.
3301 402 925 354 TeliaNet Sweden
1257 252 473 249 SWIPnet Swedish IP Network
3215 236 562 152 France Telecom / &Equant
680 233 2149 231 DFN-IP service G-WiN
5515 217 721 177 Sonera Finland Autonomous Sys
3320 197 1962 166 Deutsche Telekom AG
786 182 1874 182 The JANET IP Service
719 164 289 118 LANLINK autonomous system
8708 149 20 140 Romania Data Systems S.A.
5400 145 59 82 Concert European Core Network
5549 140 78 63 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 112 7 36 MobiFon S.A.
517 109 230 107 KPNQwest Germany GmbH
8297 108 31 62 Teleglobe Autonomous System i
5511 99 192 79 France Telecom
1290 95 396 70 PSINet UK Ltd.
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2142 8793 1517 UUNET Technologies, Inc.
7018 1114 7418 870 AT&T
3967 932 361 455 Exodus Communication
1 870 8408 646 BBN Planet
1239 792 3154 613 Sprint
3908 771 1638 477 Supernet, Inc.
8010 715 62 11 PublicNet Communications, Inc
7046 701 823 446 UUNET Technologies, Inc.
209 621 1862 299 Qwest
4323 584 364 201 Time Warner Communications, I
852 578 978 382 Telus Advanced Communications
690 537 77 322 Merit Network
705 473 349 294 UUNET Technologies, Inc.
2914 458 2226 429 Verio, Inc.
3549 404 836 201 Global Crossing
7132 402 470 168 Southwestern Bell Internet Se
2149 399 230 336 Performance Systems, Inc.
3561 380 2253 330 Cable & Wireless USA
577 353 588 221 Bell Advanced Communications
3741 350 730 239 The Internet Solution
Global Per AS Maximum Aggr summary
----------------------------------
ASN Net Savings Description
8010 704 PublicNet Communications, Inc
3967 477 Exodus Communication
4323 383 Time Warner Communications, I
1221 347 Telstra Pty Ltd
4151 325 USDA
209 322 Qwest
3908 294 Supernet, Inc.
11371 271 Rhythms NetConnections
7046 255 UUNET Technologies, Inc.
7018 244 AT&T
6347 238 SAVVIS Communications Corpora
7132 234 Southwestern Bell Internet Se
702 229 UUNET Technologies, Inc.
1 224 BBN Planet
690 215 Merit Network
4755 207 Videsh Sanchar Nigam Ltd. Aut
3549 203 Global Crossing
4355 198 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 /14:229 /15:390 /16:7054 /17:1366 /18:2466
/19:7180 /20:6263 /21:4711 /22:7168 /23:8863 /24:59841
/25:245 /26:243 /27:157 /28:110 /29:86 /30:78
/31:0 /32:18
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1372 2142 UUNET Technologies, Inc.
1221 1187 1333 Telstra Pty Ltd
3967 751 932 Exodus Communication
702 705 1091 UUNET Technologies, Inc.
8010 699 715 PublicNet Communications, Inc
7018 578 1114 AT&T
7046 535 701 UUNET Technologies, Inc.
690 534 537 Merit Network
3908 529 771 Supernet, Inc.
4323 494 584 Time Warner Communications, I
1239 459 792 Sprint
209 448 621 Qwest
1 445 870 BBN Planet
852 367 578 Telus Advanced Communications
705 357 473 UUNET Technologies, Inc.
2764 357 403 connect.com.au pty ltd
703 326 400 UUNET Technologies, Inc.
2149 301 399 Performance Systems, Inc.
4151 295 341 USDA
7474 276 311 Optus Communications Pty Ltd
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 9:1 12:446 13:10 15:2 17:5
20:1 24:807 25:1 32:73 38:14 40:4
43:1 44:2 52:1 53:2 57:13 61:182
62:150 63:1912 64:1486 65:1030 66:741 67:17
68:6 80:134 128:61 129:110 130:24 131:41
132:14 133:2 134:107 135:10 136:45 137:107
138:63 139:30 140:102 141:58 142:53 143:44
144:55 145:12 146:201 147:94 148:154 149:88
150:39 151:38 152:379 153:34 154:8 155:81
156:84 157:121 158:71 159:77 160:26 161:54
162:84 163:123 164:119 165:100 166:204 167:160
168:114 169:48 170:294 171:2 191:1 192:5293
193:2062 194:2066 195:836 196:428 198:3710 199:3300
200:2403 201:1 202:2841 203:4505 204:3227 205:2181
206:2541 207:2618 208:2616 209:2935 210:532 211:151
212:879 213:553 214:9 215:16 216:2947 217:400
218:11
End of report
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