Weekly Routing Table Report
Routing Table Analysis
cscora at apnic.net
Fri Nov 25 18:07:10 UTC 2005
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
If you have any comments please contact Philip Smith <pfs at cisco.com>.
Routing Table Report 04:00 +10GMT Sat 26 Nov, 2005
Analysis Summary
----------------
BGP routing table entries examined: 175412
Prefixes after maximum aggregation: 98989
Unique aggregates announced to Internet: 84958
Total ASes present in the Internet Routing Table: 20974
Origin-only ASes present in the Internet Routing Table: 18252
Origin ASes announcing only one prefix: 8628
Transit ASes present in the Internet Routing Table: 2722
Transit-only ASes present in the Internet Routing Table: 73
Average AS path length visible in the Internet Routing Table: 4.5
Max AS path length visible: 25
Prefixes from unregistered ASNs in the Routing Table: 2
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 12
Number of addresses announced to Internet: 1464975232
Equivalent to 87 /8s, 81 /16s and 191 /24s
Percentage of available address space announced: 39.5
Percentage of allocated address space announced: 59.5
Percentage of available address space allocated: 66.4
Total number of prefixes smaller than registry allocations: 84231
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 36699
Total APNIC prefixes after maximum aggregation: 15833
Prefixes being announced from the APNIC address blocks: 34450
Unique aggregates announced from the APNIC address blocks: 16836
APNIC Region origin ASes present in the Internet Routing Table: 2408
APNIC Region origin ASes announcing only one prefix: 700
APNIC Region transit ASes present in the Internet Routing Table: 367
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 17
Number of APNIC addresses announced to Internet: 207770304
Equivalent to 12 /8s, 98 /16s and 82 /24s
Percentage of available APNIC address space announced: 77.1
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911
APNIC Address Blocks 58/7, 60/7, 124/7, 126/8, 202/7, 210/7, 218/7,
220/7 and 222/8
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 92643
Total ARIN prefixes after maximum aggregation: 55837
Prefixes being announced from the ARIN address blocks: 72165
Unique aggregates announced from the ARIN address blocks: 27489
ARIN Region origin ASes present in the Internet Routing Table: 10369
ARIN Region origin ASes announcing only one prefix: 3846
ARIN Region transit ASes present in the Internet Routing Table: 963
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 276880896
Equivalent to 16 /8s, 128 /16s and 222 /24s
Percentage of available ARIN address space announced: 68.8
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
ARIN Address Blocks 24/8, 63/8, 64/6, 68/7, 70/6, 74/7, 76/8,
198/7, 204/6, 208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 34319
Total RIPE prefixes after maximum aggregation: 23169
Prefixes being announced from the RIPE address blocks: 31276
Unique aggregates announced from the RIPE address blocks: 20972
RIPE Region origin ASes present in the Internet Routing Table: 7333
RIPE Region origin ASes announcing only one prefix: 3833
RIPE Region transit ASes present in the Internet Routing Table: 1210
Average RIPE Region AS path length visible: 5.0
Max RIPE Region AS path length visible: 20
Number of RIPE addresses announced to Internet: 224984832
Equivalent to 13 /8s, 104 /16s and 255 /24s
Percentage of available RIPE address space announced: 67.1
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
RIPE Address Blocks 62/8, 80/5, 88/6, 188/8, 193/8, 194/7, 212/7
and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 9957
Total LACNIC prefixes after maximum aggregation: 3298
Prefixes being announced from the LACNIC address blocks: 8248
Unique aggregates announced from the LACNIC address blocks: 4765
LACNIC Region origin ASes present in the Internet Routing Table: 650
LACNIC Region origin ASes announcing only one prefix: 207
LACNIC Region transit ASes present in the Internet Routing Table: 122
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 25
Number of LACNIC addresses announced to Internet: 22922752
Equivalent to 1 /8s, 93 /16s and 198 /24s
Percentage of available LACNIC address space announced: 34.2
LACNIC AS Blocks 26592-26623, 27648-28671, plus ERX transfers
LACNIC Address Blocks 189/8, 190/8, 200/7
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 1787
Total AfriNIC prefixes after maximum aggregation: 852
Prefixes being announced from the AfriNIC address blocks: 1150
Unique aggregates announced from the AfriNIC address blocks: 833
AfriNIC Region origin ASes present in the Internet Routing Table: 141
AfriNIC Region origin ASes announcing only one prefix: 42
AfriNIC Region transit ASes present in the Internet Routing Table: 18
Average AfriNIC Region AS path length visible: 4.6
Max AfriNIC Region AS path length visible: 16
Number of AfriNIC addresses announced to Internet: 2862848
Equivalent to 0 /8s, 43 /16s and 175 /24s
Percentage of available AfriNIC address space announced: 8.5
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
4134 1017 6348 217 CHINANET-BACKBONE
9583 830 77 12 Sify Limited
4755 753 259 69 Videsh Sanchar Nigam Ltd. Aut
1221 742 1342 514 Telstra Pty Ltd
4766 651 3927 287 Korea Telecom (KIX)
7545 510 108 69 TPG Internet Pty Ltd
17676 470 6819 100 Softbank BB Corp.
9498 410 216 65 BHARTI BT INTERNET LTD.
9443 394 87 80 Primus Telecommunications
17488 370 22 10 Hathway IP Over Cable Interne
4802 348 74 160 Wantree Development
2907 340 1764 317 SINET Japan
17557 331 24 161 Pakistan Telecom
9929 330 217 48 China Netcom Corp.
7474 329 258 227 SingTel Optus Pty Ltd
18302 312 142 173 SK Global co., Ltd
17974 280 65 16 PT TELEKOMUNIKASI INDONESIA
9837 276 79 177 Powertel Ltd
18101 271 68 19 Reliance Infocom Ltd Internet
9800 257 410 67 CHINA UNICOM
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1477 6316 964 AT&T WorldNet Services
4323 1191 706 233 Time Warner Telecom
174 1069 5846 992 Cogent Communications
721 1066 21935 310 DLA Systems Automation Center
701 987 8135 832 UUNET Technologies, Inc.
6197 962 407 496 BellSouth Network Solutions,
2386 914 528 687 AT&T Data Communications Serv
18566 878 240 7 Covad Communications
1239 845 2801 599 Sprint
209 656 3607 520 Qwest
20115 655 532 345 Charter Communications
11492 629 81 10 Cable One
852 573 1093 381 Telus Advanced Communications
19262 563 1593 135 Verizon Global Networks
19916 563 49 54 OLM LLC
855 557 247 64 Canadian Research Network
22773 557 1468 25 Cox Communications, Inc.
3602 543 126 103 Sprint Canada, Inc.
3356 515 10633 402 Level 3 Communications, LLC
6478 495 1427 276 AT&T Worldnet Services
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 616 1960 484 UUNET - Commercial IP service
3301 304 1101 290 TeliaNet Sweden
3320 285 3230 240 Deutsche Telekom AG
8220 271 475 266 COLT Telecommunications
680 245 2040 239 DFN-IP service G-WiN
8708 233 274 219 Romania Data Systems S.A.
3246 230 477 223 Song Networks
6746 202 51 173 Dynamic Network Technologies,
1257 195 712 171 SWIPnet Swedish IP Network
3269 182 1829 68 TELECOM ITALIA
5515 182 840 128 Sonera Solution Autonomous Sy
786 174 1795 174 The JANET IP Service
5400 166 317 136 BT Ignite European Backbone
6830 161 669 33 UPC Distribution Services
3300 160 170 94 AUCS Communications Services
8866 159 37 9 Bulgarian Telecommunication C
3215 150 1275 81 France Telecom Transpac
24863 150 37 6 LINKdotNET AS number
12479 148 322 5 Uni2 Autonomous System
25186 148 211 104 France Telecom Transpac's Tra
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 397 709 170 UniNet S.A. de C.V.
16814 295 18 7 NSS, S.A.
11172 282 104 69 Servicios Alestra S.A de C.V
11664 222 22 14 Keytech SA
19632 196 14 5 Metropolis Intercom S.A.
14117 184 11 6 Telefonica del Sur S.A.
22047 180 128 8 VTR PUNTO NET S.A.
6147 158 118 21 Telefonica Del Peru
7303 152 72 19 Telecom Argentina Stet-France
13999 142 52 9 Mega Cable S.A. de C.V.
11556 130 64 3 Cable-Wireless Panama
19169 126 8 23 Telconet
10481 121 48 8 Prima S.A.
6503 113 148 74 AVANTEL, S.A.
6505 113 89 83 Global One Communicaoes Ltda
18822 113 7 10 TELEFONICA MANQUEHUE
21826 112 14 18 INTERCABLE
5639 111 12 9 Telecommunications Services o
11311 99 8 10 Sinectis S.A.
4270 92 17 9 Red de Interconexion Universi
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 268 708 228 The Internet Solution
8452 147 44 7 TEDATA
5536 122 8 16 Internet Egypt Network
2018 117 298 103 Tertiary Education Network
2905 78 211 71 The Internetworking Company o
20928 61 16 2 Noor Advanced Technologies AS
24835 59 34 6 RAYA Telecom - Egypt
6713 56 71 10 Itissalat Al-MAGHRIB
15475 56 84 4 Nile Online
5713 38 151 34 Telkom SA Ltd
12455 33 6 3 Jambonet Autonomous system
33774 33 4 24 AS Number for Telecom Algeria
15706 31 8 3 Sudatel Internet Exchange Aut
8524 23 1 4 AUCEGYPT Autonomous System
16637 23 10 21 Johnnic e-Ventures
23889 23 5 9 MAURITIUS TELECOM
10798 22 1 13 Standard Bank of South Africa
21280 21 4 4 Swift Global Kenya Ltd.Is an
12258 17 3 11 Vodacom Internet Company
15808 17 2 2 Communication Solutions Ltd i
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 1191 958 Time Warner Telecom
18566 878 871 Covad Communications
9583 830 818 Sify Limited
4134 1017 800 CHINANET-BACKBONE
721 1066 756 DLA Systems Automation Center
4755 753 684 Videsh Sanchar Nigam Ltd. Aut
11492 629 619 Cable One
22773 557 532 Cox Communications, Inc.
19916 563 509 OLM LLC
855 557 493 Canadian Research Network
6197 962 466 BellSouth Network Solutions,
5668 476 450 CenturyTel Internet Holdings,
7545 510 441 TPG Internet Pty Ltd
3602 543 440 Sprint Canada, Inc.
19262 563 428 Verizon Global Networks
17676 470 370 Softbank BB Corp.
4766 651 364 Korea Telecom (KIX)
17488 370 360 Hathway IP Over Cable Interne
6467 403 355 E.Spire Communications, Inc.
9498 410 345 BHARTI BT INTERNET LTD.
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
65003 PRIVATE 57.250.244.0/24 13879 SITA-EQUANT
24413 UNALLOCATED 202.46.32.0/19 17623 China Netcom Corp.
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
132.0.0.0/10 721 DLA Systems Automation Center
137.0.0.0/13 721 DLA Systems Automation Center
158.0.0.0/13 721 DLA Systems Automation Center
192.43.230.0/24 7575 Australian Academic and Rease
192.44.0.0/24 5501 Fraunhofer Gesellschaft
192.44.0.0/19 702 UUNET - Commercial IP service
192.70.164.0/24 25689 National Research Council of
192.72.0.0/18 4780 Digital United Inc.
192.72.0.0/16 4780 Digital United Inc.
192.84.205.0/24 719 LANLINK autonomous system
192.119.135.0/24 270 NASA
192.172.0.0/19 721 DLA Systems Automation Center
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 /10:8 /11:17 /12:82
/13:188 /14:342 /15:666 /16:8606 /17:2895 /18:4883
/19:11042 /20:12165 /21:10216 /22:13506 /23:14613 /24:95210
/25:347 /26:291 /27:203 /28:26 /29:12 /30:37
/31:3 /32:31
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 862 878 Covad Communications
6197 784 962 BellSouth Network Solutions,
7018 728 1477 AT&T WorldNet Services
9583 653 830 Sify Limited
2386 641 914 AT&T Data Communications Serv
11492 621 629 Cable One
4323 569 1191 Time Warner Telecom
19916 557 563 OLM LLC
4766 456 651 Korea Telecom (KIX)
855 430 557 Canadian Research Network
702 395 616 UUNET - Commercial IP service
7011 381 432 Citizens Utilities
5668 376 476 CenturyTel Internet Holdings,
1239 365 845 Sprint
6198 355 493 BellSouth Network Solutions,
6517 318 343 Yipes Communications, Inc.
15270 317 344 PaeTec.net -a division of Pae
13609 298 340 Choice One Communications Inc
18302 296 312 SK Global co., Ltd
701 286 987 UUNET Technologies, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 8:38 12:1621 13:1 15:11 16:3
17:3 18:3 20:42 24:680 30:2 32:64
38:182 40:54 44:3 47:3 52:4 55:1
56:3 57:35 58:94 59:95 60:153 61:803
62:791 63:1897 64:2909 65:2126 66:2895 67:636
68:685 69:1315 70:236 71:35 72:467 80:695
81:580 82:481 83:317 84:308 85:371 86:205
87:101 125:63 128:142 129:169 130:99 131:301
132:34 133:1 134:151 135:45 136:164 137:71
138:173 139:75 140:446 141:146 142:400 143:145
144:219 145:34 146:304 147:131 148:271 149:193
150:107 151:73 152:111 153:94 154:5 155:152
156:84 157:118 158:146 159:179 160:85 161:76
162:241 163:159 164:189 165:183 166:146 167:246
168:460 169:139 170:309 171:12 192:5749 193:3359
194:2437 195:1642 196:720 198:3910 199:3213 200:4288
201:455 202:6247 203:6586 204:3828 205:2040 206:2440
207:2886 208:2032 209:3454 210:1781 211:797 212:1219
213:1382 214:315 215:42 216:3842 217:1169 218:222
219:128 220:539 221:317 222:129
End of report
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