Weekly Routing Table Report
Routing Table Analysis
cscora at thyme.apnic.net
Fri Dec 21 05:04:13 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 21 Dec, 2001
Analysis Summary
----------------
BGP routing table entries examined: 108272
Prefixes after maximum aggregation: 71920
Unique aggregates announced to Internet: 52032
Total ASes present in the Internet Routing Table: 12309
Origin-only ASes present in the Internet Routing Table: 10690
Origin ASes announcing only one prefix: 4617
Transit ASes present in the Internet Routing Table: 1619
Transit-only ASes present in the Internet Routing Table: 56
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: 7
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: 1144719040
Equivalent to 68 /8s, 59 /16s and 6 /24s
Percentage of available address space announced: 30.9
Percentage of allocated address space announced: 58.4
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 73022
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17066
Total APNIC prefixes after maximum aggregation: 10574
Prefixes being announced from the APNIC address blocks: 15483
Unique aggregates announced from the APNIC address blocks: 9799
APNIC Region origin ASes present in the Internet Routing Table: 1426
APNIC Region origin ASes announcing only one prefix: 467
APNIC Region transit ASes present in the Internet Routing Table: 241
Average APNIC Region AS path length visible: 5.2
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 77823344
Equivalent to 4 /8s, 163 /16s and 125 /24s
Percentage of available APNIC address space announced: 57.5
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: 73280
Total ARIN prefixes after maximum aggregation: 47428
Prefixes being announced from the ARIN address blocks: 52651
Unique aggregates announced from the ARIN address blocks: 16942
ARIN Region origin ASes present in the Internet Routing Table: 7291
ARIN Region origin ASes announcing only one prefix: 2244
ARIN Region transit ASes present in the Internet Routing Table: 743
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 180579276
Equivalent to 10 /8s, 195 /16s and 107 /24s
Percentage of available ARIN address space announced: 67.3
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: 17921
Total RIPE prefixes after maximum aggregation: 13918
Prefixes being announced from the RIPE address blocks: 14615
Unique aggregates announced from the RIPE address blocks: 9696
RIPE Region origin ASes present in the Internet Routing Table: 3536
RIPE Region origin ASes announcing only one prefix: 1906
RIPE Region transit ASes present in the Internet Routing Table: 625
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 104469248
Equivalent to 6 /8s, 58 /16s and 19 /24s
Percentage of available RIPE address space announced: 69.2
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 1504 1261 1042 Telstra Pty Ltd
2764 399 376 373 connect.com.au pty ltd
703 398 346 305 UUNET Technologies, Inc.
2907 370 1832 340 SINET Japan
7474 310 285 201 Optus Communications Pty Ltd
4755 294 117 81 Videsh Sanchar Nigam Ltd. Aut
4134 268 1890 96 Data Communications Bureau
2521 190 165 28 PSINet Japan
4766 185 1395 135 Korea Internet Exchange for "
1659 175 924 34 Taiwan Academic Network (TANe
17557 174 13 83 Pakistan Telecom
9443 172 45 68 Primus Telecommunications
9583 150 32 3 Satyam Infoway Ltd.,
4740 149 34 123 OzEmail ISP
7539 143 136 142 TANet2, sponsored by NSC, TAI
9768 142 381 87 Korea Telecom
4812 137 192 34 China Telecom (Group) - Shang
17676 125 1920 7 XTAGE CORPORATION
4713 120 942 107 NTT Communications Corporatio
7657 119 21 78 The Internet Group Limited
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1095 2688 864 UUNET Technologies, Inc.
3301 425 925 354 TeliaNet Sweden
1257 253 473 250 SWIPnet Swedish IP Network
3215 235 555 151 France Telecom / &Equant
680 233 2149 231 DFN-IP service G-WiN
5515 217 721 177 Sonera Finland Autonomous Sys
3320 186 1960 165 Deutsche Telekom AG
786 182 1874 182 The JANET IP Service
719 164 289 118 LANLINK autonomous system
8708 148 20 140 Romania Data Systems S.A.
5400 147 59 84 Concert European Core Network
5549 141 78 62 Nextra Deutschland GmbH + Co.
2856 136 777 125 BTnet UK Regional network
3303 134 575 124 Swisscom Ltd
8895 116 89 40 Saudi Arabia AS
3269 114 662 70 TELECOM ITALIA
12302 112 7 36 MobiFon S.A.
517 109 232 107 KPNQwest Germany GmbH
8297 107 31 64 Teleglobe Autonomous System i
5511 99 192 79 France Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2159 8829 1528 UUNET Technologies, Inc.
7018 1110 7353 868 AT&T
3967 955 363 474 Exodus Communication
705 925 377 404 UUNET Technologies, Inc.
1 873 8404 648 BBN Planet
1239 783 3169 606 Sprint
3908 764 1623 479 Supernet, Inc.
8010 719 62 12 PublicNet Communications, Inc
7046 698 823 450 UUNET Technologies, Inc.
209 614 1861 297 Qwest
4323 586 364 201 Time Warner Communications, I
852 578 977 381 Telus Advanced Communications
690 529 76 316 Merit Network
2914 462 2212 433 Verio, Inc.
3549 404 837 202 Global Crossing
2149 403 214 337 Performance Systems, Inc.
7132 400 468 166 Southwestern Bell Internet Se
3561 383 2269 330 Cable & Wireless USA
577 350 587 218 Bell Advanced Communications
3741 350 730 239 The Internet Solution
Global Per AS Maximum Aggr summary
----------------------------------
ASN Net Savings Description
8010 707 PublicNet Communications, Inc
705 521 UUNET Technologies, Inc.
3967 481 Exodus Communication
1221 462 Telstra Pty Ltd
4323 385 Time Warner Communications, I
4151 326 USDA
209 317 Qwest
3908 285 Supernet, Inc.
11371 271 Rhythms NetConnections
7046 248 UUNET Technologies, Inc.
7018 242 AT&T
6347 238 SAVVIS Communications Corpora
7132 234 Southwestern Bell Internet Se
702 231 UUNET Technologies, Inc.
1 225 BBN Planet
690 213 Merit Network
4755 213 Videsh Sanchar Nigam Ltd. Aut
3549 202 Global Crossing
4355 198 EarthLink, Inc.
852 197 Telus Advanced Communications
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
65500 PRIVATE 62.40.11.0/24 8469 PIRONET NDH AG
2027 UNALLOCATED 150.185.128.0/18 8143 Publicom Corp.
65500 PRIVATE 195.227.39.0/24 8469 PIRONET NDH AG
65500 PRIVATE 195.227.73.0/24 8469 PIRONET NDH AG
65500 PRIVATE 195.227.79.0/24 8469 PIRONET NDH AG
65500 PRIVATE 195.227.88.0/24 8469 PIRONET NDH AG
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 /8:18 /9:5 /10:7 /11:11 /12:37
/13:90 /14:227 /15:390 /16:7078 /17:1375 /18:2466
/19:7184 /20:6254 /21:4731 /22:7188 /23:8914 /24:60996
/25:316 /26:302 /27:208 /28:173 /29:114 /30:147
/31:0 /32:41
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1380 2159 UUNET Technologies, Inc.
1221 1358 1504 Telstra Pty Ltd
705 808 925 UUNET Technologies, Inc.
3967 773 955 Exodus Communication
702 712 1095 UUNET Technologies, Inc.
8010 703 719 PublicNet Communications, Inc
7018 577 1110 AT&T
7046 534 698 UUNET Technologies, Inc.
3908 527 764 Supernet, Inc.
690 526 529 Merit Network
4323 496 586 Time Warner Communications, I
1239 449 783 Sprint
1 448 873 BBN Planet
209 444 614 Qwest
852 368 578 Telus Advanced Communications
2764 354 399 connect.com.au pty ltd
703 323 398 UUNET Technologies, Inc.
2149 306 403 Performance Systems, Inc.
4151 296 342 USDA
7474 275 310 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 24:805 25:1 32:73 38:14 40:4
43:1 44:2 52:1 53:2 57:13 61:167
62:155 63:2370 64:1497 65:1019 66:744 67:17
68:6 80:131 128:61 129:112 130:24 131:43
132:14 133:2 134:127 135:10 136:120 137:107
138:63 139:30 140:102 141:57 142:65 143:44
144:55 145:12 146:216 147:95 148:155 149:88
150:41 151:38 152:391 153:34 154:6 155:83
156:85 157:120 158:70 159:77 160:45 161:54
162:84 163:130 164:125 165:100 166:206 167:162
168:115 169:48 170:299 171:2 191:1 192:5359
193:2074 194:2068 195:839 196:430 198:3759 199:3316
200:2407 201:1 202:2873 203:4533 204:3325 205:2174
206:2588 207:2679 208:2608 209:2945 210:570 211:151
212:953 213:556 214:9 215:15 216:2950 217:395
218:11
End of report
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