Weekly Routing Table Report
Routing Analysis Role Account
cscora at apnic.net
Fri May 25 19:03:50 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 26 May, 2012
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 411471
Prefixes after maximum aggregation: 174357
Deaggregation factor: 2.36
Unique aggregates announced to Internet: 200214
Total ASes present in the Internet Routing Table: 41122
Prefixes per ASN: 10.01
Origin-only ASes present in the Internet Routing Table: 33227
Origin ASes announcing only one prefix: 15654
Transit ASes present in the Internet Routing Table: 5503
Transit-only ASes present in the Internet Routing Table: 137
Average AS path length visible in the Internet Routing Table: 4.5
Max AS path length visible: 29
Max AS path prepend of ASN ( 2115) 25
Prefixes from unregistered ASNs in the Routing Table: 385
Unregistered ASNs in the Routing Table: 134
Number of 32-bit ASNs allocated by the RIRs: 2738
Number of 32-bit ASNs visible in the Routing Table: 2392
Prefixes from 32-bit ASNs in the Routing Table: 6078
Special use prefixes present in the Routing Table: 2
Prefixes being announced from unallocated address space: 116
Number of addresses announced to Internet: 2553429168
Equivalent to 152 /8s, 50 /16s and 60 /24s
Percentage of available address space announced: 68.9
Percentage of allocated address space announced: 69.0
Percentage of available address space allocated: 99.9
Percentage of address space in use by end-sites: 92.6
Total number of prefixes smaller than registry allocations: 175392
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 100470
Total APNIC prefixes after maximum aggregation: 32508
APNIC Deaggregation factor: 3.09
Prefixes being announced from the APNIC address blocks: 96903
Unique aggregates announced from the APNIC address blocks: 40056
APNIC Region origin ASes present in the Internet Routing Table: 4698
APNIC Prefixes per ASN: 20.63
APNIC Region origin ASes announcing only one prefix: 1245
APNIC Region transit ASes present in the Internet Routing Table: 732
Average APNIC Region AS path length visible: 4.7
Max APNIC Region AS path length visible: 25
Number of APNIC region 32-bit ASNs visible in the Routing Table: 217
Number of APNIC addresses announced to Internet: 646675008
Equivalent to 38 /8s, 139 /16s and 122 /24s
Percentage of available APNIC address space announced: 82.0
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: 151368
Total ARIN prefixes after maximum aggregation: 76847
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 121901
Unique aggregates announced from the ARIN address blocks: 51066
ARIN Region origin ASes present in the Internet Routing Table: 15130
ARIN Prefixes per ASN: 8.06
ARIN Region origin ASes announcing only one prefix: 5742
ARIN Region transit ASes present in the Internet Routing Table: 1602
Average ARIN Region AS path length visible: 4.0
Max ARIN Region AS path length visible: 24
Number of ARIN region 32-bit ASNs visible in the Routing Table: 17
Number of ARIN addresses announced to Internet: 812317120
Equivalent to 48 /8s, 106 /16s and 249 /24s
Percentage of available ARIN address space announced: 64.8
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, 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: 102332
Total RIPE prefixes after maximum aggregation: 54493
RIPE Deaggregation factor: 1.88
Prefixes being announced from the RIPE address blocks: 94402
Unique aggregates announced from the RIPE address blocks: 59288
RIPE Region origin ASes present in the Internet Routing Table: 16590
RIPE Prefixes per ASN: 5.69
RIPE Region origin ASes announcing only one prefix: 8060
RIPE Region transit ASes present in the Internet Routing Table: 2655
Average RIPE Region AS path length visible: 5.0
Max RIPE Region AS path length visible: 29
Number of RIPE region 32-bit ASNs visible in the Routing Table: 1591
Number of RIPE addresses announced to Internet: 514347400
Equivalent to 30 /8s, 168 /16s and 81 /24s
Percentage of available RIPE address space announced: 82.9
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: 41693
Total LACNIC prefixes after maximum aggregation: 8266
LACNIC Deaggregation factor: 5.04
Prefixes being announced from the LACNIC address blocks: 41798
Unique aggregates announced from the LACNIC address blocks: 20439
LACNIC Region origin ASes present in the Internet Routing Table: 1597
LACNIC Prefixes per ASN: 26.17
LACNIC Region origin ASes announcing only one prefix: 440
LACNIC Region transit ASes present in the Internet Routing Table: 308
Average LACNIC Region AS path length visible: 4.4
Max LACNIC Region AS path length visible: 21
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 563
Number of LACNIC addresses announced to Internet: 101399432
Equivalent to 6 /8s, 11 /16s and 59 /24s
Percentage of available LACNIC address space announced: 67.2
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: 9337
Total AfriNIC prefixes after maximum aggregation: 2175
AfriNIC Deaggregation factor: 4.29
Prefixes being announced from the AfriNIC address blocks: 7389
Unique aggregates announced from the AfriNIC address blocks: 2197
AfriNIC Region origin ASes present in the Internet Routing Table: 541
AfriNIC Prefixes per ASN: 13.66
AfriNIC Region origin ASes announcing only one prefix: 167
AfriNIC Region transit ASes present in the Internet Routing Table: 119
Average AfriNIC Region AS path length visible: 4.5
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: 31746304
Equivalent to 1 /8s, 228 /16s and 105 /24s
Percentage of available AfriNIC address space announced: 47.3
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 2635 11114 1120 Korea Telecom (KIX)
17974 1925 530 80 PT TELEKOMUNIKASI INDONESIA
7545 1671 301 87 TPG Internet Pty Ltd
4755 1577 385 155 TATA Communications formerly
9829 1298 1085 28 BSNL National Internet Backbo
7552 1173 1062 11 Vietel Corporation
9583 1156 87 503 Sify Limited
4808 1105 2050 317 CNCGROUP IP network: China169
24560 1027 385 167 Bharti Airtel Ltd., Telemedia
9498 965 291 64 BHARTI Airtel Ltd.
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 3413 3807 193 bellsouth.net, inc.
7029 3335 986 159 Windstream Communications Inc
18566 2093 382 181 Covad Communications
1785 1909 681 131 PaeTec Communications, Inc.
20115 1639 1566 616 Charter Communications
22773 1608 2911 121 Cox Communications, Inc.
4323 1566 1040 379 Time Warner Telecom
30036 1401 260 760 Mediacom Communications Corp
7018 1224 10031 821 AT&T WorldNet Services
7011 1188 317 681 Citizens Utilities
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 1718 544 16 Corbina telecom
2118 1312 97 14 EUnet/RELCOM Autonomous Syste
34984 697 188 172 BILISIM TELEKOM
12479 692 678 70 Uni2 Autonomous System
31148 684 37 9 FreeNet ISP
20940 669 221 522 Akamai Technologies European
6830 655 2215 426 UPC Distribution Services
8551 577 362 71 Bezeq International
3320 489 8442 402 Deutsche Telekom AG
3292 471 2108 407 TDC Tele Danmark
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 1917 340 202 TVCABLE BOGOTA
28573 1891 1171 59 NET Servicos de Comunicao S.A
6503 1539 418 65 AVANTEL, S.A.
8151 1483 3054 337 UniNet S.A. de C.V.
7303 1435 901 191 Telecom Argentina Stet-France
26615 902 760 32 Tim Brasil S.A.
27947 689 73 95 Telconet S.A
11172 642 91 73 Servicios Alestra S.A de C.V
3816 584 247 89 Empresa Nacional de Telecomun
22047 582 326 15 VTR PUNTO NET 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 1367 957 12 TEDATA
24863 846 274 35 LINKdotNET AS number
6713 496 649 18 Itissalat Al-MAGHRIB
24835 321 80 8 RAYA Telecom - Egypt
3741 262 905 223 The Internet Solution
33776 205 12 21 Starcomms Nigeria Limited
12258 197 28 62 Vodacom Internet Company
16637 171 666 83 MTN Network Solutions
15706 164 32 6 Sudatel Internet Exchange Aut
29571 157 15 16 Ci Telecom Autonomous system
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 3413 3807 193 bellsouth.net, inc.
7029 3335 986 159 Windstream Communications Inc
4766 2635 11114 1120 Korea Telecom (KIX)
18566 2093 382 181 Covad Communications
17974 1925 530 80 PT TELEKOMUNIKASI INDONESIA
10620 1917 340 202 TVCABLE BOGOTA
1785 1909 681 131 PaeTec Communications, Inc.
28573 1891 1171 59 NET Servicos de Comunicao S.A
8402 1718 544 16 Corbina telecom
7545 1671 301 87 TPG Internet Pty Ltd
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 3335 3176 Windstream Communications Inc
18566 2093 1912 Covad Communications
17974 1925 1845 PT TELEKOMUNIKASI INDONESIA
28573 1891 1832 NET Servicos de Comunicao S.A
1785 1909 1778 PaeTec Communications, Inc.
10620 1917 1715 TVCABLE BOGOTA
8402 1718 1702 Corbina telecom
7545 1671 1584 TPG Internet Pty Ltd
4766 2635 1515 Korea Telecom (KIX)
22773 1608 1487 Cox Communications, Inc.
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
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
32873 UNALLOCATED 12.46.102.0/24 10912 InterNAP Network Ser
14764 UNALLOCATED 12.108.237.0/24 7018 AT&T WorldNet Servic
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
5.44.40.0/21 23456 32-bit ASN transition
5.44.96.0/22 31342 AS from Clanotopia IT-Service
5.44.100.0/22 31342 AS from Clanotopia IT-Service
5.44.104.0/22 29066 velia.net
5.44.184.0/21 23456 32-bit ASN transition
5.44.216.0/21 51109 CAMELHOST SIA
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
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 /10:29 /11:81 /12:235
/13:462 /14:832 /15:1502 /16:12299 /17:6299 /18:10615
/19:20778 /20:29474 /21:30834 /22:40476 /23:38421 /24:215321
/25:1229 /26:1457 /27:821 /28:169 /29:67 /30:17
/31:0 /32:22
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
7029 2995 3335 Windstream Communications Inc
6389 2132 3413 bellsouth.net, inc.
18566 2042 2093 Covad Communications
10620 1734 1917 TVCABLE BOGOTA
8402 1696 1718 Corbina telecom
30036 1342 1401 Mediacom Communications Corp
6503 1293 1539 AVANTEL, S.A.
8452 1169 1367 TEDATA
11492 1149 1186 Cable One
7011 1073 1188 Citizens Utilities
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:547 2:744 4:13 5:35 6:3 8:420
12:2006 13:1 14:618 15:12 16:3 17:5
20:23 23:173 24:1773 27:1319 31:1025 32:57
33:2 34:2 36:8 37:623 38:807 40:121
41:3203 42:137 44:3 46:1415 47:3 49:452
50:548 52:13 54:12 55:9 56:3 57:33
58:961 59:496 60:254 61:1217 62:1003 63:2036
64:4237 65:2249 66:4480 67:2008 68:1160 69:3196
70:933 71:494 72:1824 74:2599 75:493 76:328
77:952 78:984 79:492 80:1222 81:936 82:659
83:543 84:491 85:1221 86:438 87:907 88:340
89:1718 90:289 91:4854 92:550 93:1333 94:1517
95:1171 96:368 97:313 98:860 99:38 100:7
101:192 103:1105 106:104 107:185 108:307 109:1342
110:753 111:923 112:409 113:591 114:628 115:838
116:936 117:724 118:906 119:1236 120:357 121:698
122:1663 123:1103 124:1379 125:1254 128:554 129:195
130:245 131:631 132:287 133:22 134:248 135:59
136:214 137:187 138:359 139:186 140:496 141:243
142:417 143:555 144:535 145:70 146:506 147:286
148:775 149:298 150:191 151:177 152:468 153:172
154:12 155:401 156:223 157:381 158:186 159:556
160:340 161:265 162:345 163:190 164:606 165:397
166:593 167:466 168:862 169:126 170:875 171:131
172:4 173:1746 174:578 175:431 176:526 177:797
178:1380 180:1211 181:85 182:1005 183:226 184:497
185:1 186:2284 187:1098 188:1276 189:1804 190:5536
192:5996 193:5562 194:4526 195:3418 196:1208 197:148
198:3659 199:4650 200:5857 201:1940 202:8585 203:8607
204:4340 205:2550 206:2763 207:2802 208:4059 209:3629
210:2766 211:1534 212:2031 213:1934 214:863 215:103
216:5096 217:1550 218:553 219:314 220:1240 221:563
222:325 223:359
End of report
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