Weekly Routing Table Report
Routing Table Analysis
cscora at thyme.apnic.net
Fri Aug 9 06:04:56 EDT 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 09 Aug, 2002
Analysis Summary
----------------
BGP routing table entries examined: 115042
Prefixes after maximum aggregation: 73968
Unique aggregates announced to Internet: 54874
Total ASes present in the Internet Routing Table: 13521
Origin-only ASes present in the Internet Routing Table: 11699
Origin ASes announcing only one prefix: 5192
Transit ASes present in the Internet Routing Table: 1822
Transit-only ASes present in the Internet Routing Table: 55
Average AS path length visible in the Internet Routing Table: 5.4
Max AS path length visible: 23
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: 33
Number of addresses announced to Internet: 1196649525
Equivalent to 71 /8s, 83 /16s and 108 /24s
Percentage of available address space announced: 32.3
Percentage of allocated address space announced: 59.2
Percentage of available address space allocated: 54.6
Total number of prefixes smaller than registry allocations: 46871
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 18951
Total APNIC prefixes after maximum aggregation: 11227
Prefixes being announced from the APNIC address blocks: 17461
Unique aggregates announced from the APNIC address blocks: 10634
APNIC Region origin ASes present in the Internet Routing Table: 1586
APNIC Region origin ASes announcing only one prefix: 515
APNIC Region transit ASes present in the Internet Routing Table: 274
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 12
Number of APNIC addresses announced to Internet: 91033056
Equivalent to 5 /8s, 109 /16s and 13 /24s
Percentage of available APNIC address space announced: 59.9
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 220/7
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 76668
Total ARIN prefixes after maximum aggregation: 48096
Prefixes being announced from the ARIN address blocks: 54172
Unique aggregates announced from the ARIN address blocks: 18183
ARIN Region origin ASes present in the Internet Routing Table: 7948
ARIN Region origin ASes announcing only one prefix: 2557
ARIN Region transit ASes present in the Internet Routing Table: 794
Average ARIN Region AS path length visible: 5.3
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 190387280
Equivalent to 11 /8s, 89 /16s and 20 /24s
Percentage of available ARIN address space announced: 66.8
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
25600 - 26623
ARIN Address Blocks 24/8, 63/8, 64/6, 68/7, 199/8, 200/8, 204/6,
208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 19421
Total RIPE prefixes after maximum aggregation: 14645
Prefixes being announced from the RIPE address blocks: 16086
Unique aggregates announced from the RIPE address blocks: 10527
RIPE Region origin ASes present in the Internet Routing Table: 3934
RIPE Region origin ASes announcing only one prefix: 2120
RIPE Region transit ASes present in the Internet Routing Table: 742
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 23
Number of RIPE addresses announced to Internet: 113219584
Equivalent to 6 /8s, 191 /16s and 152 /24s
Percentage of available RIPE address space announced: 75.0
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 1262 1194 898 Telstra Pty Ltd
4538 561 1279 27 China Education and Research
703 412 377 324 UUNET
2907 366 1848 344 SINET Japan
2764 360 358 331 connect.com.au pty ltd
7474 320 296 213 Optus Communications Pty Ltd
17557 298 20 95 Pakistan Telecom
4134 295 2182 104 Data Communications Bureau
4755 279 110 73 Videsh Sanchar Nigam Ltd. Aut
4766 249 1506 156 Korea Internet Exchange for "
4814 220 79 14 China Telecom (Group)
9583 180 32 5 Satyam Infoway Ltd.,
17676 180 2802 32 XTAGE CORPORATION
9443 169 45 68 Primus Telecommunications
7539 147 189 142 TANet2, sponsored by NSC, TAI
9768 144 385 74 Korea Telecom
7657 132 22 91 The Internet Group Limited
9800 125 191 18 CHINA UNICOM
4713 115 1009 106 NTT Communications Corporatio
4621 114 11 62 UNINET-TH
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 906 2434 757 UUNET - Commercial IP service
3301 396 923 346 TeliaNet Sweden
5515 320 783 180 Sonera Solution Autonomous Sy
3215 289 641 178 France Telecom Transpac
3320 269 1965 208 Deutsche Telekom AG
680 237 2150 234 DFN-IP service G-WiN
5400 210 85 98 BT Ignite European Backbone
1257 208 446 203 SWIPnet Swedish IP Network
719 182 306 128 LANLINK autonomous system
786 177 1873 177 The JANET IP Service
3303 142 548 141 Swisscom Ltd
8708 142 24 139 Romania Data Systems S.A.
2856 128 787 118 BTnet UK Regional network
12302 124 18 31 MobiFon S.A.
3246 112 317 107 Song Networks
5511 110 192 88 France Telecom
3233 107 10 9 RNC - Romanian Natioanal R&D
3269 106 658 63 TELECOM ITALIA
2874 101 85 38 Global One Services AB
2830 95 243 75 UUNET Dual-Homed customers
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1802 9145 1367 UUNET Technologies, Inc.
7018 1317 7431 938 AT&T
3908 1010 1659 498 Supernet, Inc.
1239 812 3248 647 Sprint
852 754 1175 451 Telus Advanced Communications
1 711 8052 446 GENUITY
4323 639 442 263 Time Warner Communications, I
7843 630 367 225 Adelphia Corp.
7132 593 663 137 Southwestern Bell Internet Se
690 521 75 332 Merit Network
7046 514 886 316 UUNET Technologies, Inc.
209 505 2057 343 Qwest
7066 486 203 254 Virginia Polytechnic Institut
7029 451 164 54 Alltel Information Services,
3549 438 824 314 Global Crossing
6197 379 611 37 BellSouth Network Solutions,
15290 378 297 194 AT&T Canada IES
2914 365 2077 365 Verio, Inc.
6347 348 370 75 SAVVIS Communications Corpora
4355 334 278 71 EarthLink, Inc.
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4538 561 534 China Education and Research
3908 1010 512 Supernet, Inc.
7132 593 456 Southwestern Bell Internet Se
7843 630 405 Adelphia Corp.
7029 451 397 Alltel Information Services,
7018 1317 379 AT&T
4323 639 376 Time Warner Communications, I
1221 1262 364 Telstra Pty Ltd
6197 379 342 BellSouth Network Solutions,
852 754 303 Telus Advanced Communications
1657 279 277 University of Louisville
4151 290 274 USDA
6347 348 273 SAVVIS Communications Corpora
1 711 265 GENUITY
4355 334 263 EarthLink, Inc.
18566 240 236 Covad Communications
7066 486 232 Virginia Polytechnic Institut
376 329 224 Reseau Interordinateurs Scien
7303 267 207 Telecom Argentina Stet-France
4755 279 206 Videsh Sanchar Nigam Ltd. Aut
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
26705 UNALLOCATED 12.111.19.0/24 701 UUNET Technologies,
64511 RESERVED 147.73.0.0/16 5050 Pittsburgh Supercomp
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 7170 AT&T Government Markets
135.0.0.0/13 10455 Lucent Technologies
137.0.0.0/13 568 DISO-UNRRA
138.94.0.0/16 1 GENUITY
158.0.0.0/13 568 DISO-UNRRA
164.233.0.0/16 6020 DISA NETWORK SERVICES
192.44.0.0/19 702 UUNET - Commercial IP service
192.58.92.0/24 19548 Adelphia Business Solutions
192.72.0.0/18 4780 Digital United Inc.
192.72.0.0/16 4780 Digital United Inc.
192.83.16.0/20 5515 Sonera Solution Autonomous Sy
192.83.32.0/19 5515 Sonera Solution Autonomous Sy
192.83.96.0/22 5515 Sonera Solution Autonomous Sy
192.83.100.0/24 5515 Sonera Solution Autonomous Sy
192.91.198.0/24 2568 CTS Network Services
192.119.135.0/24 270 NASA
192.135.50.0/24 7018 AT&T
192.136.79.0/24 719 LANLINK autonomous system
192.136.86.0/24 719 LANLINK autonomous system
192.136.87.0/24 719 LANLINK autonomous system
192.136.88.0/24 719 LANLINK autonomous system
192.139.62.0/24 6539 GT Group Telecom Services Cor
192.140.0.0/16 5511 France Telecom
192.153.136.0/21 568 DISO-UNRRA
192.156.0.0/19 568 DISO-UNRRA
192.156.164.0/24 19548 Adelphia Business Solutions
192.172.0.0/19 568 DISO-UNRRA
192.195.253.0/24 237 Merit Network
192.208.29.0/24 3908 Supernet, Inc.
192.208.30.0/23 3908 Supernet, Inc.
192.243.36.0/23 7168 Northwest Link
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:19 /9:8 /10:7 /11:12 /12:37
/13:84 /14:231 /15:418 /16:7293 /17:1472 /18:2692
/19:7790 /20:7570 /21:5279 /22:7993 /23:9696 /24:63613
/25:201 /26:178 /27:100 /28:95 /29:70 /30:112
/31:0 /32:72
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
3908 595 1010 Supernet, Inc.
702 554 906 UUNET - Commercial IP service
701 487 1802 UUNET Technologies, Inc.
690 467 521 Merit Network
7843 429 630 Adelphia Corp.
7066 389 486 Virginia Polytechnic Institut
7018 379 1317 AT&T
7029 356 451 Alltel Information Services,
1657 278 279 University of Louisville
6197 264 379 BellSouth Network Solutions,
6198 243 316 BellSouth Network Solutions,
18566 236 240 Covad Communications
3301 234 396 TeliaNet Sweden
3215 221 289 France Telecom Transpac
1239 214 812 Sprint
1 208 711 GENUITY
1580 202 215 ANOSCEUR
3320 201 269 Deutsche Telekom AG
4355 192 334 EarthLink, Inc.
7046 188 514 UUNET Technologies, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
3:1 4:3 12:535 13:10 15:2 17:6
20:3 24:709 25:1 32:41 38:9 40:6
44:1 57:14 61:324 62:246 63:1857 64:1234
65:1426 66:988 67:97 68:81 80:260 81:43
128:67 129:151 130:21 131:55 132:11 133:2
134:124 135:10 136:500 137:96 138:151 139:72
140:174 141:46 142:70 143:50 144:139 145:17
146:240 147:141 148:244 149:79 150:39 151:69
152:271 153:36 154:11 155:114 156:70 157:116
158:67 159:134 160:22 161:76 162:213 163:87
164:263 165:126 166:217 167:253 168:294 169:60
170:233 171:3 192:5466 193:2374 194:2075 195:802
196:415 198:3676 199:3158 200:2725 202:3333 203:4741
204:3259 205:2187 206:2544 207:2565 208:2612 209:2705
210:599 211:238 212:904 213:716 214:9 215:19
216:2854 217:475 218:31 219:1
End of report
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