Weekly Routing Table Report
Routing Table Analysis
cscora at thyme.apnic.net
Fri Apr 12 06:05:03 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 12 Apr, 2002
Analysis Summary
----------------
BGP routing table entries examined: 111098
Prefixes after maximum aggregation: 72529
Unique aggregates announced to Internet: 53373
Total ASes present in the Internet Routing Table: 12889
Origin-only ASes present in the Internet Routing Table: 11172
Origin ASes announcing only one prefix: 4870
Transit ASes present in the Internet Routing Table: 1717
Transit-only ASes present in the Internet Routing Table: 58
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: 8
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from the IANA Reserved Address blocks: 14
Number of addresses announced to Internet: 1186324588
Equivalent to 70 /8s, 181 /16s and 224 /24s
Percentage of available address space announced: 32.0
Percentage of allocated address space announced: 60.6
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 74720
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 18052
Total APNIC prefixes after maximum aggregation: 10808
Prefixes being announced from the APNIC address blocks: 16568
Unique aggregates announced from the APNIC address blocks: 10235
APNIC Region origin ASes present in the Internet Routing Table: 1474
APNIC Region origin ASes announcing only one prefix: 472
APNIC Region transit ASes present in the Internet Routing Table: 267
Average APNIC Region AS path length visible: 5.5
Max APNIC Region AS path length visible: 13
Number of APNIC addresses announced to Internet: 82939712
Equivalent to 4 /8s, 241 /16s and 143 /24s
Percentage of available APNIC address space announced: 61.3
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: 74469
Total ARIN prefixes after maximum aggregation: 47475
Prefixes being announced from the ARIN address blocks: 52602
Unique aggregates announced from the ARIN address blocks: 17616
ARIN Region origin ASes present in the Internet Routing Table: 7625
ARIN Region origin ASes announcing only one prefix: 2393
ARIN Region transit ASes present in the Internet Routing Table: 757
Average ARIN Region AS path length visible: 5.3
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 183982020
Equivalent to 10 /8s, 247 /16s and 87 /24s
Percentage of available ARIN address space announced: 68.5
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: 18572
Total RIPE prefixes after maximum aggregation: 14246
Prefixes being announced from the RIPE address blocks: 15303
Unique aggregates announced from the RIPE address blocks: 9614
RIPE Region origin ASes present in the Internet Routing Table: 3733
RIPE Region origin ASes announcing only one prefix: 2005
RIPE Region transit ASes present in the Internet Routing Table: 682
Average RIPE Region AS path length visible: 5.8
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 114191648
Equivalent to 6 /8s, 206 /16s and 109 /24s
Percentage of available RIPE address space announced: 75.6
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, 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 1290 1211 947 Telstra Pty Ltd
4538 472 1194 17 China Education and Research
2907 438 1959 370 SINET Japan
703 421 341 327 UUNET Technologies, Inc.
2764 396 362 364 connect.com.au pty ltd
7474 308 290 207 Optus Communications Pty Ltd
9443 275 44 63 Primus Telecommunications
4134 273 1986 93 Data Communications Bureau
4755 271 109 78 Videsh Sanchar Nigam Ltd. Aut
17557 259 18 105 Pakistan Telecom
4766 220 1520 158 Korea Internet Exchange for "
7539 168 239 162 TANet2, sponsored by NSC, TAI
4804 162 84 67 Microplex PTY LTD
9583 153 32 5 Satyam Infoway Ltd.,
9768 145 385 79 Korea Telecom
7657 122 22 85 The Internet Group Limited
4713 120 898 104 NTT Communications Corporatio
17676 119 1904 12 XTAGE CORPORATION
7713 115 49 24 PT TELEKOMUNIKASI INDONESIA
4780 113 186 39 Digital United Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1031 2577 848 UUNET Technologies, Inc.
3301 391 923 343 TeliaNet Sweden
3215 270 598 175 France Telecom / &Equant
5515 266 760 171 Sonera Finland Autonomous Sys
680 232 2149 231 DFN-IP service G-WiN
3320 229 1962 176 Deutsche Telekom AG
1257 215 463 212 SWIPnet Swedish IP Network
5400 194 82 93 Concert European Core Network
786 182 1874 182 The JANET IP Service
719 163 289 118 LANLINK autonomous system
8708 143 22 135 Romania Data Systems S.A.
2856 128 786 117 BTnet UK Regional network
12302 126 8 46 MobiFon S.A.
8297 123 4133 65 Teleglobe Autonomous System i
3269 117 694 71 TELECOM ITALIA
3303 117 546 116 Swisscom Ltd
5536 109 13 25 Internet Egypt Network
5511 105 193 92 France Telecom
517 101 226 97 KPNQwest Germany GmbH
2874 96 84 36 Global One Services AB
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2076 8538 1454 UUNET Technologies, Inc.
7018 1249 7517 931 AT&T
3908 852 1660 476 Supernet, Inc.
1 802 8124 597 BBN Planet
1239 780 3359 643 Sprint
4323 634 436 253 Time Warner Communications, I
852 629 1112 414 Telus Advanced Communications
7046 599 837 373 UUNET Technologies, Inc.
705 592 185 292 UUNET Technologies, Inc.
209 580 2003 326 Qwest
7132 567 602 138 Southwestern Bell Internet Se
3549 520 858 273 Global Crossing
690 459 68 300 Merit Network
7843 430 314 49 Adelphia Corp.
2914 413 2162 406 Verio, Inc.
7066 405 202 249 Virginia Polytechnic Institut
2149 351 191 292 Performance Systems, Inc.
3741 343 731 236 The Internet Solution
6197 341 341 131 BellSouth Network Solutions,
3561 321 2151 288 Cable & Wireless USA
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4538 472 455 China Education and Research
7132 567 429 Southwestern Bell Internet Se
4323 634 381 Time Warner Communications, I
7843 430 381 Adelphia Corp.
3908 852 376 Supernet, Inc.
1221 1290 343 Telstra Pty Ltd
7018 1249 318 AT&T
705 592 300 UUNET Technologies, Inc.
4151 309 293 USDA
11371 293 287 Rhythms NetConnections
4565 309 276 Epoch Networks
209 580 254 Qwest
7029 264 249 Alltel Information Services,
3549 520 247 Global Crossing
6347 317 238 SAVVIS Communications Corpora
7046 599 226 UUNET Technologies, Inc.
4355 251 216 EarthLink, Inc.
852 629 215 Telus Advanced Communications
9443 275 212 Primus Telecommunications
6197 341 210 BellSouth Network Solutions,
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
25612 UNALLOCATED 65.169.169.0/24 1239 Sprint
25612 UNALLOCATED 65.174.220.0/24 1239 Sprint
1877 UNALLOCATED 192.108.201.0/24 1880 Stupi, house man's p
112 UNALLOCATED 192.175.48.0/24 3557 Vixie Enterprises
5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies,
25611 UNALLOCATED 208.17.232.0/24 6128 Cablevision Systems
25612 UNALLOCATED 208.21.11.0/24 1239 Sprint
25612 UNALLOCATED 208.35.16.0/24 1239 Sprint
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 BBN Planet
144.7.0.0/16 701 UUNET Technologies, Inc.
153.36.0.0/14 701 UUNET Technologies, Inc.
153.147.0.0/16 3561 Cable & Wireless USA
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
192.5.4.0/23 3557 Vixie Enterprises
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:19 /9:7 /10:8 /11:14 /12:35
/13:88 /14:231 /15:402 /16:7183 /17:1404 /18:2569
/19:7439 /20:6923 /21:4949 /22:7654 /23:9216 /24:62179
/25:218 /26:194 /27:90 /28:92 /29:56 /30:95
/31:0 /32:33
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1334 2076 UUNET Technologies, Inc.
1221 1150 1290 Telstra Pty Ltd
702 659 1031 UUNET Technologies, Inc.
7018 658 1249 AT&T
3908 584 852 Supernet, Inc.
705 514 592 UUNET Technologies, Inc.
4323 502 634 Time Warner Communications, I
690 451 459 Merit Network
1239 434 780 Sprint
7046 411 599 UUNET Technologies, Inc.
1 396 802 BBN Planet
209 386 580 Qwest
852 383 629 Telus Advanced Communications
3549 380 520 Global Crossing
7066 376 405 Virginia Polytechnic Institut
2764 349 396 connect.com.au pty ltd
703 337 421 UUNET Technologies, Inc.
11371 287 293 Rhythms NetConnections
4565 285 309 Epoch Networks
6197 283 341 BellSouth Network Solutions,
Number of /24s announced per /8 block (Global)
----------------------------------------------
3:1 9:1 11:1 12:493 13:10 15:2
17:6 20:2 24:769 25:1 32:68 38:8
40:6 44:1 57:14 61:197 62:187 63:1900
64:1209 65:1152 66:824 67:245 68:5 80:208
81:13 128:64 129:140 130:22 131:57 132:12
133:3 134:128 135:10 136:312 137:105 138:143
139:49 140:188 141:139 142:81 143:38 144:140
145:13 146:221 147:137 148:163 149:92 150:40
151:48 152:319 153:33 154:1 155:108 156:76
157:123 158:71 159:125 160:37 161:55 162:153
163:104 164:190 165:124 166:220 167:194 168:98
169:52 170:290 171:2 192:5446 193:2281 194:2098
195:807 196:433 198:3744 199:3208 200:2409 202:3182
203:4598 204:3248 205:2176 206:2612 207:2670 208:2560
209:2787 210:606 211:205 212:876 213:596 214:9
215:18 216:3090 217:467 218:15
End of report
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