Weekly Routing Table Report
Routing Analysis
cscora at dev.apnic.net
Thu Jul 19 14:12:06 EDT 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 Jul, 2001
Analysis Summary
----------------
BGP routing table entries examined: 104573
Origin ASes present in the Internet Routing Table: 11312
Origin ASes announcing only one prefix: 4160
Transit ASes present in the Internet Routing Table: 1514
Average AS path length visible in the Internet Routing Table: 5.3
Max AS path length visible: 15
Illegal AS announcements present in the Routing Table: 19
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from the IANA Reserved Address blocks: 16
Number of addresses announced to Internet: 1240384498
Equivalent to 73 /8s, 238 /16s and 195 /24s
Percentage of available address space announced: 33.5
Percentage of allocated address space announced: 65.0
Percentage of available address space allocated: 51.5
Total number of prefixes smaller than registry allocations: 71049
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 15502
Prefixes being announced from the APNIC address blocks: 13946
APNIC Region origin ASes present in the Internet Routing Table: 1329
APNIC Region origin ASes announcing only one prefix: 463
APNIC Region transit ASes present in the Internet Routing Table: 223
Average APNIC Region AS path length visible: 5.1
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 74027962
Equivalent to 4 /8s, 105 /16s and 147 /24s
Percentage of available APNIC address space announced: 72.8
APNIC AS Blocks 4608 - 4864, 7467 - 7722, 9216 - 10239, 17408 - 18431
APNIC Address Blocks 61/8, 202/7, 210/7 and 218/8
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 71715
Prefixes being announced from the ARIN address blocks: 51695
ARIN Region origin ASes present in the Internet Routing Table: 6798
ARIN Region origin ASes announcing only one prefix: 2013
ARIN Region transit ASes present in the Internet Routing Table: 710
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 13
Number of ARIN addresses announced to Internet: 201112880
Equivalent to 11 /8s, 252 /16s and 189 /24s
Percentage of available ARIN address space announced: 79.9
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 - 22527
ARIN Address Blocks 24/8, 63/8, 64/6, 199/8, 200/8, 204/6,
208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 17353
Prefixes being announced from the RIPE address blocks: 13448
RIPE Region origin ASes present in the Internet Routing Table: 3195
RIPE Region origin ASes announcing only one prefix: 1684
RIPE Region transit ASes present in the Internet Routing Table: 582
Average RIPE Region AS path length visible: 5.8
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 101605394
Equivalent to 6 /8s, 14 /16s and 96 /24s
Percentage of available RIPE address space announced: 67.3
RIPE AS Blocks 1877 - 1901, 2042, 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 Description
1221 1673 1346 Telstra
2764 433 345 connect.com.au pty ltd
703 401 383 UUNET Technologies, Inc.
2907 367 1784 SINET Japan
4755 283 158 VSNL India
7474 242 292 Optus Communications
4134 232 1610 Data Communications Bureau
7539 207 165 TANet2, sponsored by NSC, TAI
4766 176 1336 KORnet Powered BY Korea Telec
7545 145 21 TPG Internet Pty Ltd
9443 134 38 INTERNETPRIMUS-AS-A
4786 130 17 NetConnect Communications Pty
4763 118 69 Telstra New Zealand
17561 115 151 Internet service provision to
7657 113 22 The Internet Group Limited
7586 112 17 Paradox Digital Pty. Ltd
4812 111 279 Shanghai Telecom Company
4740 110 15 Ozemail
4713 109 878 NTT-OCNET
9583 108 60 Satyam Infoway Ltd.,
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
702 679 1846 UUNET Technologies, Inc.
3301 430 918 TeliaNet Sweden
15870 417 12 Global Center Frankfurt
1257 280 504 Swipnet AB
1270 245 868 UUNET Germany
680 232 2069 Deutschef Forschurgsnetz
3215 220 495 RAIN
15878 202 8 Global Center Paris
719 187 291 LANLINK
786 184 1890 JANET IP Service
5515 174 654 Sonera Finland
3320 170 1410 Deutsche Telekom AG
8708 151 15 Romania Data System
5400 139 66 Concert Internet Plus Europea
3303 130 575 Swisscom
517 124 272 Xlink
2856 123 776 BTnet UK Regional network
5549 117 66 Seicom Computer Gmb
1267 107 1989 IUnet S.p.A
8503 106 3 PCNET - PCNET DATA Network
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
701 2318 8313 UUNET Technologies, Inc.
7018 971 6988 AT&T
1 906 8715 BBN Planet
7046 744 1055 UUNET Technologies, Inc.
1239 686 3295 Sprint ICM-Inria
690 525 94 Merit Network
2914 518 2317 Verio, Inc.
4293 491 99 Cable & Wireless USA
209 473 1883 Qwest
3561 433 2450 Cable & Wireless USA
3908 420 583 Supernet, Inc.
2548 415 1012 Digital Express Group, Inc.
2149 414 377 Performance Systems, Inc.
18994 397 10 Global Crossing
4323 361 300 Time Warner Communications, I
3549 351 809 Global Crossing
11371 337 100 Rhythms NetConnections
3967 331 450 Exodus Communication
15290 321 340 AT&T Canada IES
6347 315 353 SAVVIS Communications Corpora
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv Description
701 2318 8313 UUNET Technologies, Inc.
1221 1673 1346 Telstra
7018 971 6988 AT&T
1 906 8715 BBN Planet
7046 744 1055 UUNET Technologies, Inc.
1239 686 3295 Sprint ICM-Inria
702 679 1846 UUNET Technologies, Inc.
690 525 94 Merit Network
2914 518 2317 Verio, Inc.
4293 491 99 Cable & Wireless USA
209 473 1883 Qwest
2764 433 345 connect.com.au pty ltd
3561 433 2450 Cable & Wireless USA
3301 430 918 TeliaNet Sweden
3908 420 583 Supernet, Inc.
15870 417 12 Global Center Frankfurt
2548 415 1012 Digital Express Group, Inc.
2149 414 377 Performance Systems, Inc.
703 401 383 UUNET Technologies, Inc.
18994 397 10 Global Crossing
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
18541 UNALLOCATED 63.166.66.0/24 1239 Sprint ICM-Inria
18541 UNALLOCATED 63.169.205.0/24 1239 Sprint ICM-Inria
578 UNALLOCATED 64.230.242.0/28 577 Bell Canada
578 UNALLOCATED 64.230.242.16/28 577 Bell Canada
65501 PRIVATE 64.243.116.0/24 16890 K&G Network Services
2027 UNALLOCATED 150.185.128.0/18 8143 Publicom Corp.
1877 UNALLOCATED 192.108.196.0/24 1800 SPRINT
1877 UNALLOCATED 192.108.209.0/24 1880 Stupi, house man's
1877 UNALLOCATED 192.108.210.0/24 1880 Stupi, house man's
1877 UNALLOCATED 192.108.214.0/24 1800 SPRINT
19062 UNALLOCATED 192.197.96.0/20 1691 BCTEL Advanced Commu
65460 PRIVATE 192.231.11.0/24 7018 AT&T
5757 UNALLOCATED 192.239.13.0/24 701 UUNET Technologies,
17657 UNALLOCATED 202.161.160.0/20 9653 AGNS HongKong NET
4831 UNALLOCATED 202.172.32.0/20 9740 Cable & Wireless Net
19551 UNALLOCATED 204.229.224.0/22 6226 US West Communicatio
5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies,
19322 UNALLOCATED 208.44.17.0/24 209 Qwest
65515 PRIVATE 212.110.142.0/24 5593 CRIS-AS
Advertised Unregistered Addresses
---------------------------------
Network Origin AS Description
99.0.0.0/8 9638 National Agricultural Coopera
128.65.0.0/16 3463 ACES Research Inc
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.
153.34.0.0/15 701 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 US DOD NIC Unregistered
172.32.1.0/25 1221 Telstra
172.122.0.0/16 701 UUNET Technologies, Inc.
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 /8:20 /9:5 /10:6 /11:8 /12:32
/13:82 /14:215 /15:353 /16:6914 /17:1177 /18:2244
/19:6753 /20:5408 /21:4515 /22:6806 /23:8631 /24:59130
/25:289 /26:361 /27:429 /28:431 /29:355 /30:336
/31:1 /32:72
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
1221 1518 1673 Telstra
701 1454 2318 UUNET Technologies, Inc.
7046 577 744 UUNET Technologies, Inc.
690 521 525 Merit Network
7018 490 971 AT&T
4293 475 491 Cable & Wireless USA
702 428 679 UUNET Technologies, Inc.
1 426 906 BBN Planet
15870 413 417 Global Center Frankfurt
18994 395 397 Global Crossing
2764 389 433 connect.com.au pty ltd
1239 369 686 Sprint ICM-Inria
209 351 473 Qwest
703 331 401 UUNET Technologies, Inc.
11371 324 337 Rhythms NetConnections
3908 319 420 Supernet, Inc.
4323 314 361 Time Warner Communications, I
18993 308 312 Global Crossing
2548 304 415 Digital Express Group, Inc.
8013 278 308 PSINet Ltd. Canada
Advertised prefixes smaller than registry allocations (per /8 block)
--------------------------------------------------------------------
4:1 9:6 12:579 13:13 15:11 17:11
20:7 24:846 26:1 32:42 35:4 38:30
40:2 43:4 44:5 45:1 47:40 52:2
53:4 55:1 56:5 57:15 61:117 62:197
63:2512 64:2746 65:1001 66:758 80:47 128:61
129:188 130:54 131:67 132:41 133:1 134:231
135:11 136:36 137:178 138:233 139:86 140:257
141:225 142:113 143:98 144:198 145:32 146:199
147:180 148:239 149:124 150:63 151:261 152:984
153:40 154:21 155:144 156:92 157:156 158:113
159:82 160:85 161:146 162:160 163:237 164:167
165:250 166:260 167:158 168:215 169:54 170:446
171:20 172:1 192:32 193:2607 194:2750 195:1078
196:3 198:4 199:3881 200:2756 202:3739 203:5755
204:4372 205:2926 206:4110 207:3637 208:5200 209:4100
210:777 211:293 212:1124 213:697 216:4751 217:441
218:3
End of report
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