Weekly Routing Table Report
Routing Analysis Role Account
cscora at apnic.net
Fri Feb 3 18:59:49 UTC 2012
This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.
The posting is sent to APOPS, NANOG, AfNOG, AusNOG, SANOG, PacNOG, LacNOG,
TRNOG, CaribNOG and the RIPE Routing Working Group.
Daily listings are sent to bgp-stats at lists.apnic.net
For historical data, please see http://thyme.rand.apnic.net.
If you have any comments please contact Philip Smith <pfsinoz at gmail.com>.
Routing Table Report 04:00 +10GMT Sat 04 Feb, 2012
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 395820
Prefixes after maximum aggregation: 169388
Deaggregation factor: 2.34
Unique aggregates announced to Internet: 191947
Total ASes present in the Internet Routing Table: 40003
Prefixes per ASN: 9.89
Origin-only ASes present in the Internet Routing Table: 32689
Origin ASes announcing only one prefix: 15521
Transit ASes present in the Internet Routing Table: 5393
Transit-only ASes present in the Internet Routing Table: 142
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 33
Max AS path prepend of ASN (48687) 24
Prefixes from unregistered ASNs in the Routing Table: 315
Unregistered ASNs in the Routing Table: 120
Number of 32-bit ASNs allocated by the RIRs: 2257
Number of 32-bit ASNs visible in the Routing Table: 1921
Prefixes from 32-bit ASNs in the Routing Table: 4672
Special use prefixes present in the Routing Table: 2
Prefixes being announced from unallocated address space: 120
Number of addresses announced to Internet: 2512081104
Equivalent to 149 /8s, 187 /16s and 80 /24s
Percentage of available address space announced: 67.8
Percentage of allocated address space announced: 67.8
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 92.0
Total number of prefixes smaller than registry allocations: 167934
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 97613
Total APNIC prefixes after maximum aggregation: 31507
APNIC Deaggregation factor: 3.10
Prefixes being announced from the APNIC address blocks: 93918
Unique aggregates announced from the APNIC address blocks: 39044
APNIC Region origin ASes present in the Internet Routing Table: 4648
APNIC Prefixes per ASN: 20.21
APNIC Region origin ASes announcing only one prefix: 1238
APNIC Region transit ASes present in the Internet Routing Table: 731
Average APNIC Region AS path length visible: 4.3
Max APNIC Region AS path length visible: 18
Number of APNIC region 32-bit ASNs visible in the Routing Table: 140
Number of APNIC addresses announced to Internet: 635833440
Equivalent to 37 /8s, 230 /16s and 12 /24s
Percentage of available APNIC address space announced: 80.6
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319,
58368-59391, 131072-132095, 132096-133119
APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8,
49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8,
106/8, 110/8, 111/8, 112/8, 113/8, 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, 133/8, 175/8, 180/8,
182/8, 183/8, 202/8, 203/8, 210/8, 211/8, 218/8,
219/8, 220/8, 221/8, 222/8, 223/8,
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 148115
Total ARIN prefixes after maximum aggregation: 75385
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 120087
Unique aggregates announced from the ARIN address blocks: 49290
ARIN Region origin ASes present in the Internet Routing Table: 14884
ARIN Prefixes per ASN: 8.07
ARIN Region origin ASes announcing only one prefix: 5683
ARIN Region transit ASes present in the Internet Routing Table: 1577
Average ARIN Region AS path length visible: 4.0
Max ARIN Region AS path length visible: 22
Number of ARIN region 32-bit ASNs visible in the Routing Table: 15
Number of ARIN addresses announced to Internet: 804133824
Equivalent to 47 /8s, 238 /16s and 27 /24s
Percentage of available ARIN address space announced: 63.9
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
53248-55295, 393216-394239
ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8,
12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8,
20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8,
29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8,
40/8, 44/8, 45/8, 47/8, 48/8, 50/8, 52/8,
53/8, 54/8, 55/8, 56/8, 57/8, 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, 100/8, 104/8, 107/8, 108/8, 173/8,
174/8, 184/8, 199/8, 204/8, 205/8, 206/8, 207/8,
208/8, 209/8, 214/8, 215/8, 216/8,
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 98052
Total RIPE prefixes after maximum aggregation: 52278
RIPE Deaggregation factor: 1.88
Prefixes being announced from the RIPE address blocks: 89929
Unique aggregates announced from the RIPE address blocks: 55955
RIPE Region origin ASes present in the Internet Routing Table: 16285
RIPE Prefixes per ASN: 5.52
RIPE Region origin ASes announcing only one prefix: 7995
RIPE Region transit ASes present in the Internet Routing Table: 2598
Average RIPE Region AS path length visible: 4.7
Max RIPE Region AS path length visible: 33
Number of RIPE region 32-bit ASNs visible in the Routing Table: 1322
Number of RIPE addresses announced to Internet: 498585736
Equivalent to 29 /8s, 183 /16s and 208 /24s
Percentage of available RIPE address space announced: 80.3
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, 47104-52223, 56320-58367
196608-198655
RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8,
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, 109/8,
176/8, 178/8, 185/8, 193/8, 194/8, 195/8, 212/8,
213/8, 217/8,
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 38255
Total LACNIC prefixes after maximum aggregation: 8059
LACNIC Deaggregation factor: 4.75
Prefixes being announced from the LACNIC address blocks: 37876
Unique aggregates announced from the LACNIC address blocks: 19445
LACNIC Region origin ASes present in the Internet Routing Table: 1569
LACNIC Prefixes per ASN: 24.14
LACNIC Region origin ASes announcing only one prefix: 442
LACNIC Region transit ASes present in the Internet Routing Table: 294
Average LACNIC Region AS path length visible: 4.3
Max LACNIC Region AS path length visible: 24
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 440
Number of LACNIC addresses announced to Internet: 95986568
Equivalent to 5 /8s, 184 /16s and 163 /24s
Percentage of available LACNIC address space announced: 63.6
LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
262144-263167 plus ERX transfers
LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8,
200/8, 201/8,
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 8951
Total AfriNIC prefixes after maximum aggregation: 2087
AfriNIC Deaggregation factor: 4.29
Prefixes being announced from the AfriNIC address blocks: 6957
Unique aggregates announced from the AfriNIC address blocks: 2150
AfriNIC Region origin ASes present in the Internet Routing Table: 512
AfriNIC Prefixes per ASN: 13.59
AfriNIC Region origin ASes announcing only one prefix: 163
AfriNIC Region transit ASes present in the Internet Routing Table: 115
Average AfriNIC Region AS path length visible: 4.6
Max AfriNIC Region AS path length visible: 25
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 4
Number of AfriNIC addresses announced to Internet: 30867968
Equivalent to 1 /8s, 215 /16s and 2 /24s
Percentage of available AfriNIC address space announced: 46.0
AfriNIC AS Blocks 36864-37887, 327680-328703 & ERX transfers
AfriNIC Address Blocks 41/8, 102/8, 105/8, 197/8,
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
4766 2474 11102 982 Korea Telecom (KIX)
17974 1723 503 36 PT TELEKOMUNIKASI INDONESIA
7545 1642 303 85 TPG Internet Pty Ltd
4755 1529 385 155 TATA Communications formerly
7552 1408 1064 7 Vietel Corporation
9829 1167 989 28 BSNL National Internet Backbo
9583 1123 82 483 Sify Limited
4808 1102 2051 313 CNCGROUP IP network: China169
24560 1014 385 167 Bharti Airtel Ltd., Telemedia
17488 934 161 224 Hathway IP Over Cable Interne
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6389 3445 3807 201 bellsouth.net, inc.
7029 3211 1017 199 Windstream Communications Inc
18566 2093 382 177 Covad Communications
1785 1865 680 125 PaeTec Communications, Inc.
20115 1627 1552 627 Charter Communications
4323 1609 1062 384 Time Warner Telecom
22773 1498 2910 109 Cox Communications, Inc.
30036 1437 253 743 Mediacom Communications Corp
19262 1386 4683 400 Verizon Global Networks
7018 1305 7007 851 AT&T WorldNet Services
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8402 1712 480 15 Corbina telecom
2118 1391 99 14 EUnet/RELCOM Autonomous Syste
15557 1096 2161 64 LDCOM NETWORKS
34984 643 188 172 BILISIM TELEKOM
6830 642 1927 412 UPC Distribution Services
20940 602 195 467 Akamai Technologies European
12479 561 642 54 Uni2 Autonomous System
31148 532 37 9 FreeNet ISP
3320 531 8162 397 Deutsche Telekom AG
8551 530 360 81 Bezeq International
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
10620 1735 323 170 TVCABLE BOGOTA
28573 1618 1083 72 NET Servicos de Comunicao S.A
8151 1336 2995 344 UniNet S.A. de C.V.
7303 1260 757 180 Telecom Argentina Stet-France
26615 887 640 33 Tim Brasil S.A.
11172 697 95 75 Servicios Alestra S.A de C.V
27947 650 73 99 Telconet S.A
22047 581 322 17 VTR PUNTO NET S.A.
3816 550 237 91 Empresa Nacional de Telecomun
7738 550 1050 31 Telecomunicacoes da Bahia S.A
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8452 1131 958 13 TEDATA
24863 834 155 43 LINKdotNET AS number
6713 485 649 18 Itissalat Al-MAGHRIB
3741 280 939 229 The Internet Solution
15706 238 32 6 Sudatel Internet Exchange Aut
33776 237 13 13 Starcomms Nigeria Limited
29571 214 17 12 Ci Telecom Autonomous system
12258 197 28 62 Vodacom Internet Company
24835 193 80 8 RAYA Telecom - Egypt
16637 163 664 82 MTN Network Solutions
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
6389 3445 3807 201 bellsouth.net, inc.
7029 3211 1017 199 Windstream Communications Inc
4766 2474 11102 982 Korea Telecom (KIX)
18566 2093 382 177 Covad Communications
1785 1865 680 125 PaeTec Communications, Inc.
10620 1735 323 170 TVCABLE BOGOTA
17974 1723 503 36 PT TELEKOMUNIKASI INDONESIA
8402 1712 480 15 Corbina telecom
7545 1642 303 85 TPG Internet Pty Ltd
20115 1627 1552 627 Charter Communications
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
7029 3211 3012 Windstream Communications Inc
18566 2093 1916 Covad Communications
1785 1865 1740 PaeTec Communications, Inc.
8402 1712 1697 Corbina telecom
17974 1723 1687 PT TELEKOMUNIKASI INDONESIA
10620 1735 1565 TVCABLE BOGOTA
7545 1642 1557 TPG Internet Pty Ltd
28573 1618 1546 NET Servicos de Comunicao S.A
4766 2474 1492 Korea Telecom (KIX)
7552 1408 1401 Vietel Corporation
Complete listing at http://thyme.rand.apnic.net/current/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
15132 UNALLOCATED 12.9.150.0/24 7018 AT&T WorldNet Servic
32567 UNALLOCATED 12.14.170.0/24 4323 Time Warner Telecom
32567 UNALLOCATED 12.25.107.0/24 4323 Time Warner Telecom
25639 UNALLOCATED 12.41.169.0/24 7018 AT&T WorldNet Servic
13317 UNALLOCATED 12.44.10.0/24 7018 AT&T WorldNet Servic
23502 UNALLOCATED 12.44.44.0/24 7018 AT&T WorldNet Servic
17300 UNALLOCATED 12.45.103.0/24 7018 AT&T WorldNet Servic
17300 UNALLOCATED 12.45.110.0/24 701 UUNET Technologies,
16476 UNALLOCATED 12.46.27.0/24 7018 AT&T WorldNet Servic
32873 UNALLOCATED 12.46.100.0/23 10912 InterNAP Network Ser
Complete listing at http://thyme.rand.apnic.net/current/data-badAS
Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------
Prefix Origin AS Description
128.0.0.0/21 12654 RIPE NCC RIS Project
128.0.24.0/24 12654 RIPE NCC RIS Project
Complete listing at http://thyme.rand.apnic.net/current/data-dsua
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
14.192.0.0/22 45464 Room 201, TGU Bldg
14.192.4.0/22 45464 Room 201, TGU Bldg
14.192.8.0/22 45464 Room 201, TGU Bldg
14.192.12.0/22 45464 Room 201, TGU Bldg
14.192.16.0/22 45464 Room 201, TGU Bldg
14.192.20.0/22 45464 Room 201, TGU Bldg
14.192.24.0/22 45464 Room 201, TGU Bldg
14.192.28.0/22 45464 Room 201, TGU Bldg
37.77.128.0/21 8492 Siris
37.77.152.0/21 44176 RIPE Network Coordination Cen
Complete listing at http://thyme.rand.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 /8:19 /9:12 /10:27 /11:80 /12:231
/13:458 /14:817 /15:1466 /16:12151 /17:6170 /18:10294
/19:20359 /20:28181 /21:29140 /22:39550 /23:36869 /24:206457
/25:1189 /26:1430 /27:786 /28:43 /29:59 /30:14
/31:0 /32:18
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
7029 2841 3211 Windstream Communications Inc
6389 2115 3445 bellsouth.net, inc.
18566 2042 2093 Covad Communications
8402 1691 1712 Corbina telecom
10620 1629 1735 TVCABLE BOGOTA
30036 1396 1437 Mediacom Communications Corp
11492 1117 1154 Cable One
1785 1063 1865 PaeTec Communications, Inc.
15557 1046 1096 LDCOM NETWORKS
7011 1033 1149 Citizens Utilities
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:499 2:475 4:14 5:1 6:3 8:378
12:1954 13:1 14:595 15:11 16:3 17:6
20:9 23:125 24:1725 27:1187 31:852 32:65
33:2 34:2 36:9 37:161 38:791 40:114
41:3108 42:92 43:1 44:3 46:1279 47:3
49:322 50:514 52:13 54:2 55:8 56:3
57:38 58:958 59:491 60:344 61:1186 62:927
63:2000 64:4147 65:2287 66:4421 67:2048 68:1167
69:3149 70:916 71:410 72:1794 74:2646 75:452
76:323 77:963 78:913 79:498 80:1221 81:877
82:562 83:538 84:582 85:1163 86:746 87:910
88:341 89:1539 90:253 91:4473 92:540 93:1555
94:1338 95:1134 96:417 97:310 98:811 99:38
100:20 101:138 103:737 106:4 107:143 108:142
109:1467 110:687 111:837 112:429 113:525 114:596
115:757 116:860 117:722 118:906 119:1249 120:356
121:682 122:1627 123:1064 124:1338 125:1360 128:538
129:189 130:213 131:590 132:164 133:21 134:231
135:59 136:214 137:152 138:285 139:140 140:489
141:261 142:378 143:400 144:509 145:70 146:484
147:227 148:724 149:274 150:168 151:194 152:446
153:170 154:7 155:398 156:211 157:367 158:156
159:513 160:329 161:243 162:341 163:188 164:532
165:397 166:556 167:455 168:765 169:147 170:833
171:110 172:4 173:1757 174:591 175:414 176:468
177:470 178:1246 180:1176 181:64 182:703 183:274
184:430 185:1 186:2028 187:853 188:1030 189:1168
190:5444 192:5979 193:5525 194:4330 195:3390 196:1299
197:180 198:3615 199:4359 200:5710 201:1728 202:8404
203:8598 204:4343 205:2443 206:2747 207:2817 208:4064
209:3558 210:2724 211:1475 212:1976 213:1841 214:855
215:93 216:4984 217:1472 218:553 219:341 220:1243
221:555 222:321 223:274
End of report
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