[NANOG] Weekly Routing Table Report
Routing Analysis Role Account
cscora at apnic.net
Fri May 9 18:06:29 UTC 2008
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 historical data, please see http://thyme.apnic.net.
If you have any comments please contact Philip Smith <pfs at cisco.com>.
Routing Table Report 04:00 +10GMT Sat 10 May, 2008
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 255385
Prefixes after maximum aggregation: 127091
Deaggregation factor: 2.01
Unique aggregates announced to Internet: 123930
Total ASes present in the Internet Routing Table: 28142
Prefixes per ASN: 9.07
Origin-only ASes present in the Internet Routing Table: 24541
Origin ASes announcing only one prefix: 11411
Transit ASes present in the Internet Routing Table: 3601
Transit-only ASes present in the Internet Routing Table: 76
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 18
Max AS path prepend of ASN (44859) 15
Prefixes from unregistered ASNs in the Routing Table: 25412
Unregistered ASNs in the Routing Table: 1885
Number of 32-bit ASNs allocated by the RIRs: 46
Prefixes from 32-bit ASNs in the Routing Table: 10
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 789
Number of addresses announced to Internet: 1849281216
Equivalent to 110 /8s, 57 /16s and 202 /24s
Percentage of available address space announced: 49.9
Percentage of allocated address space announced: 61.3
Percentage of available address space allocated: 81.4
Percentage of address space in use by end-sites: 71.7
Total number of prefixes smaller than registry allocations: 122983
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 43145
Total APNIC prefixes after maximum aggregation: 13462
APNIC Deaggregation factor: 3.20
Prefixes being announced from the APNIC address blocks: 55558
Unique aggregates announced from the APNIC address blocks: 23715
APNIC Region origin ASes present in the Internet Routing Table: 1932
APNIC Prefixes per ASN: 28.76
APNIC Region origin ASes announcing only one prefix: 544
APNIC Region transit ASes present in the Internet Routing Table: 346
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 347251424
Equivalent to 20 /8s, 178 /16s and 162 /24s
Percentage of available APNIC address space announced: 79.6
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079
APNIC Address Blocks 58/8, 59/8, 60/8, 61/8, 114/8, 115/8, 116/8,
117/8, 118/8, 119/8, 120/8, 121/8, 122/8, 123/8,
124/8, 125/8, 126/8, 202/8, 203/8, 210/8, 211/8,
218/8, 219/8, 220/8, 221/8, 222/8,
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 107798
Total ARIN prefixes after maximum aggregation: 59250
ARIN Deaggregation factor: 1.82
Prefixes being announced from the ARIN address blocks: 86847
Unique aggregates announced from the ARIN address blocks: 34386
ARIN Region origin ASes present in the Internet Routing Table: 11802
ARIN Prefixes per ASN: 7.36
ARIN Region origin ASes announcing only one prefix: 4607
ARIN Region transit ASes present in the Internet Routing Table: 1037
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 358258080
Equivalent to 21 /8s, 90 /16s and 149 /24s
Percentage of available ARIN address space announced: 73.6
ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106
(pre-ERX allocations) 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, 25600-26591,
26624-27647, 29696-30719, 31744-33791
35840-36863, 39936-40959, 46080-47103
ARIN Address Blocks 24/8, 63/8, 64/8, 65/8, 66/8, 67/8, 68/8,
69/8, 70/8, 71/8, 72/8, 73/8, 74/8, 75/8,
76/8, 96/8, 97/8, 98/8, 99/8, 173/8, 174/8,
199/8, 204/8, 205/8, 206/8, 207/8, 208/8, 209/8,
216/8,
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 55300
Total RIPE prefixes after maximum aggregation: 33687
RIPE Deaggregation factor: 1.64
Prefixes being announced from the RIPE address blocks: 50506
Unique aggregates announced from the RIPE address blocks: 33769
RIPE Region origin ASes present in the Internet Routing Table: 11311
RIPE Prefixes per ASN: 4.47
RIPE Region origin ASes announcing only one prefix: 5905
RIPE Region transit ASes present in the Internet Routing Table: 1720
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 356375680
Equivalent to 21 /8s, 61 /16s and 220 /24s
Percentage of available RIPE address space announced: 81.7
RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631
6656-6911, 8192-9215, 12288-13311, 15360-16383
20480-21503, 24576-25599, 28672-29695
30720-31743, 33792-35839, 38912-39935
40960-45055, 47104 - 48127
RIPE Address Blocks 62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8,
83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8,
90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 193/8,
194/8, 195/8, 212/8, 213/8, 217/8,
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 19926
Total LACNIC prefixes after maximum aggregation: 4988
LACNIC Deaggregation factor: 3.99
Prefixes being announced from the LACNIC address blocks: 18385
Unique aggregates announced from the LACNIC address blocks: 9882
LACNIC Region origin ASes present in the Internet Routing Table: 898
LACNIC Prefixes per ASN: 20.47
LACNIC Region origin ASes announcing only one prefix: 278
LACNIC Region transit ASes present in the Internet Routing Table: 153
Average LACNIC Region AS path length visible: 4.1
Max LACNIC Region AS path length visible: 17
Number of LACNIC addresses announced to Internet: 51034112
Equivalent to 3 /8s, 10 /16s and 184 /24s
Percentage of available LACNIC address space announced: 50.7
LACNIC AS Blocks 26592-26623, 27648-28671, plus ERX transfers
LACNIC Address Blocks 186/8, 187/8, 189/8, 190/8, 200/8, 201/8,
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 3803
Total AfriNIC prefixes after maximum aggregation: 1177
AfriNIC Deaggregation factor: 3.23
Prefixes being announced from the AfriNIC address blocks: 4161
Unique aggregates announced from the AfriNIC address blocks: 1849
AfriNIC Region origin ASes present in the Internet Routing Table: 240
AfriNIC Prefixes per ASN: 17.34
AfriNIC Region origin ASes announcing only one prefix: 77
AfriNIC Region transit ASes present in the Internet Routing Table: 49
Average AfriNIC Region AS path length visible: 3.8
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 12183552
Equivalent to 0 /8s, 185 /16s and 232 /24s
Percentage of available AfriNIC address space announced: 36.3
AfriNIC AS Blocks 36864-37887 & ERX transfers
AfriNIC Address Blocks 41/8, 196/8,
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
4755 1633 387 91 Videsh Sanchar Nigam Ltd. Aut
9583 1180 140 15 Sify Limited
9498 1171 550 61 BHARTI BT INTERNET LTD.
17488 1063 70 82 Hathway IP Over Cable Interne
4134 853 12613 317 CHINANET-BACKBONE
4766 848 6006 343 Korea Telecom (KIX)
18101 678 149 53 Reliance Infocom Ltd Internet
9829 598 450 12 BSNL National Internet Backbo
1221 548 1919 421 Telstra Pty Ltd
4808 520 837 132 CNCGROUP IP network: China169
Complete listing at http://thyme.apnic.net/current/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
4323 1424 1014 378 Time Warner Telecom
2386 1400 643 866 AT&T Data Communications Serv
7018 1399 5976 995 AT&T WorldNet Services
11492 1212 146 33 Cable One
7011 1095 319 624 Citizens Utilities
18566 1044 296 10 Covad Communications
6197 1028 630 543 BellSouth Network Solutions,
1785 1018 511 106 AppliedTheory Corporation
174 974 6836 803 Cogent Communications
22773 950 2394 62 Cox Communications, Inc.
Complete listing at http://thyme.apnic.net/current/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
9198 428 74 9 Kazakhtelecom Data Network Ad
3292 409 1788 369 TDC Tele Danmark
8452 356 188 7 TEDATA
3301 338 1458 306 TeliaNet Sweden
3320 324 7044 267 Deutsche Telekom AG
8866 298 78 24 Bulgarian Telecommunication C
5462 292 666 26 Telewest Broadband
8551 282 269 37 Bezeq International
3215 278 2686 90 France Telecom Transpac
680 272 2047 262 DFN-IP service G-WiN
Complete listing at http://thyme.apnic.net/current/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 1201 2432 227 UniNet S.A. de C.V.
11830 600 299 14 Instituto Costarricense de El
22047 566 270 14 VTR PUNTO NET S.A.
7303 456 223 62 Telecom Argentina Stet-France
16814 426 27 10 NSS, S.A.
6471 416 85 46 ENTEL CHILE S.A.
11172 413 117 69 Servicios Alestra S.A de C.V
10620 390 99 69 TVCABLE BOGOTA
14117 375 23 9 Telefonica del Sur S.A.
20299 343 36 31 NEWCOM AMERICAS
Complete listing at http://thyme.apnic.net/current/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
24863 463 61 27 LINKdotNET AS number
3741 289 853 223 The Internet Solution
20858 220 34 3 EgyNet
5713 172 575 108 Telkom SA Ltd
6713 143 135 11 Itissalat Al-MAGHRIB
2018 136 140 68 Tertiary Education Network
33783 134 10 12 EEPAD TISP TELECOM & INTERNET
5536 121 8 16 Internet Egypt Network
29571 116 13 8 Ci Telecom Autonomous system
33776 99 6 7 Starcomms Nigeria Limited
Complete listing at http://thyme.apnic.net/current/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
6389 3098 3037 123 bellsouth.net, inc.
23577 1642 34 701 Korea Telecom (ATM-MPLS)
4755 1633 387 91 Videsh Sanchar Nigam Ltd. Aut
4323 1424 1014 378 Time Warner Telecom
2386 1400 643 866 AT&T Data Communications Serv
7018 1399 5976 995 AT&T WorldNet Services
11492 1212 146 33 Cable One
8151 1201 2432 227 UniNet S.A. de C.V.
9583 1180 140 15 Sify Limited
9498 1171 550 61 BHARTI BT INTERNET LTD.
Complete listing at http://thyme.apnic.net/current/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4755 1633 1542 Videsh Sanchar Nigam Ltd. Aut
11492 1212 1179 Cable One
9583 1180 1165 Sify Limited
9498 1171 1110 BHARTI BT INTERNET LTD.
4323 1424 1046 Time Warner Telecom
18566 1044 1034 Covad Communications
17488 1063 981 Hathway IP Over Cable Interne
8151 1201 974 UniNet S.A. de C.V.
17676 1016 951 Softbank BB Corp.
23577 1642 941 Korea Telecom (ATM-MPLS)
Complete listing at http://thyme.apnic.net/current/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
14780 UNALLOCATED 4.79.181.0/24 10310 Yahoo!
12180 UNALLOCATED 4.79.248.0/24 1239 Sprint
12180 UNALLOCATED 8.10.16.0/24 3549 Global Crossing
12180 UNALLOCATED 8.10.58.0/23 3549 Global Crossing
14779 UNALLOCATED 8.12.144.0/24 10310 Yahoo!
16927 UNALLOCATED 12.0.252.0/23 701 UUNET Technologies,
22492 UNALLOCATED 12.2.46.0/24 1239 Sprint
15132 UNALLOCATED 12.9.150.0/24 701 UUNET Technologies,
32567 UNALLOCATED 12.14.170.0/24 7018 AT&T WorldNet Servic
13632 UNALLOCATED 12.20.55.0/24 6517 Yipes Communications
Complete listing at http://thyme.apnic.net/current/data-badAS
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
24.51.159.0/24 7843 Adelphia Corp.
24.54.224.0/19 20001 HoldCo LLC - Road Runner
24.75.160.0/19 7843 Adelphia Corp.
24.75.192.0/18 7843 Adelphia Corp.
24.142.40.0/21 7018 AT&T WorldNet Services
24.142.160.0/19 7018 AT&T WorldNet Services
24.246.0.0/17 7018 AT&T WorldNet Services
24.246.128.0/18 7018 AT&T WorldNet Services
62.61.220.0/24 24974 Tachyon Europe BV - Wireless
63.140.213.0/24 22555 Universal Talkware Corporatio
Complete listing at http://thyme.apnic.net/current/data-add-IANA
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:18 /9:9 /10:16 /11:40 /12:139
/13:280 /14:507 /15:1000 /16:9894 /17:4365 /18:7282
/19:15392 /20:17810 /21:17222 /22:21693 /23:22787 /24:134651
/25:773 /26:921 /27:486 /28:82 /29:9 /30:1
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
11492 1198 1212 Cable One
2386 1100 1400 AT&T Data Communications Serv
18566 1025 1044 Covad Communications
9583 1016 1180 Sify Limited
4755 979 1633 Videsh Sanchar Nigam Ltd. Aut
7011 978 1095 Citizens Utilities
6389 966 3098 bellsouth.net, inc.
6478 940 941 AT&T Worldnet Services
17488 876 1063 Hathway IP Over Cable Interne
9498 846 1171 BHARTI BT INTERNET LTD.
Complete listing at http://thyme.apnic.net/current/data/sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:9 8:108 12:2034 13:1 15:20 16:3
17:5 18:13 20:35 24:1069 25:1 32:61
33:3 38:420 40:94 41:661 44:2 47:9
52:3 55:3 56:3 57:22 58:517 59:459
60:441 61:980 62:1128 63:1959 64:3414 65:2435
66:3646 67:1183 68:664 69:2212 70:599 71:121
72:1681 73:6 74:957 75:227 76:306 77:650
78:610 79:151 80:904 81:865 82:628 83:386
84:561 85:1001 86:403 87:667 88:346 89:1300
90:11 91:1205 92:299 93:443 96:28 97:14
98:152 99:3 114:2 116:641 117:305 118:133
119:388 120:29 121:524 122:764 123:331 124:850
125:1125 128:323 129:197 130:129 131:404 132:67
133:9 134:180 135:31 136:222 137:112 138:144
139:66 140:491 141:96 142:397 143:280 144:349
145:50 146:360 147:152 148:502 149:183 150:131
151:181 152:141 153:133 154:10 155:260 156:173
157:267 158:165 159:222 160:254 161:111 162:213
163:197 164:520 165:447 166:305 167:319 168:606
169:131 170:426 171:28 172:2 189:196 190:1864
192:5765 193:4102 194:3258 195:2428 196:1065 198:3728
199:3238 200:5674 201:1454 202:7614 203:7808 204:3980
205:2080 206:2393 207:2743 208:3322 209:3431 210:2526
211:1048 212:1387 213:1654 214:454 215:50 216:4335
217:1225 218:349 219:407 220:1069 221:480 222:305
End of report
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