Weekly Routing Table Report
Routing Analysis Role Account
cscora at apnic.net
Fri Jul 30 18:10:38 UTC 2010
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,
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.apnic.net.
If you have any comments please contact Philip Smith <pfs at cisco.com>.
Routing Table Report 04:00 +10GMT Sat 31 Jul, 2010
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 327096
Prefixes after maximum aggregation: 150524
Deaggregation factor: 2.17
Unique aggregates announced to Internet: 159810
Total ASes present in the Internet Routing Table: 34482
Prefixes per ASN: 9.49
Origin-only ASes present in the Internet Routing Table: 29935
Origin ASes announcing only one prefix: 14512
Transit ASes present in the Internet Routing Table: 4547
Transit-only ASes present in the Internet Routing Table: 101
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 38
Max AS path prepend of ASN (22394) 35
Prefixes from unregistered ASNs in the Routing Table: 306
Unregistered ASNs in the Routing Table: 113
Number of 32-bit ASNs allocated by the RIRs: 716
Prefixes from 32-bit ASNs in the Routing Table: 874
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 165
Number of addresses announced to Internet: 2281256256
Equivalent to 135 /8s, 249 /16s and 53 /24s
Percentage of available address space announced: 61.5
Percentage of allocated address space announced: 66.4
Percentage of available address space allocated: 92.8
Percentage of address space in use by end-sites: 84.0
Total number of prefixes smaller than registry allocations: 155817
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 79192
Total APNIC prefixes after maximum aggregation: 27270
APNIC Deaggregation factor: 2.90
Prefixes being announced from the APNIC address blocks: 76117
Unique aggregates announced from the APNIC address blocks: 33644
APNIC Region origin ASes present in the Internet Routing Table: 4145
APNIC Prefixes per ASN: 18.36
APNIC Region origin ASes announcing only one prefix: 1154
APNIC Region transit ASes present in the Internet Routing Table: 633
Average APNIC Region AS path length visible: 3.7
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 536013088
Equivalent to 31 /8s, 242 /16s and 233 /24s
Percentage of available APNIC address space announced: 79.9
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079
55296-56319, 131072-132095
APNIC Address Blocks 1/8, 14/8, 27/8, 43/8, 58/8, 59/8, 60/8,
61/8, 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: 134849
Total ARIN prefixes after maximum aggregation: 69675
ARIN Deaggregation factor: 1.94
Prefixes being announced from the ARIN address blocks: 107709
Unique aggregates announced from the ARIN address blocks: 42178
ARIN Region origin ASes present in the Internet Routing Table: 13823
ARIN Prefixes per ASN: 7.79
ARIN Region origin ASes announcing only one prefix: 5299
ARIN Region transit ASes present in the Internet Routing Table: 1367
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 38
Number of ARIN addresses announced to Internet: 730011936
Equivalent to 43 /8s, 131 /16s and 25 /24s
Percentage of available ARIN address space announced: 62.2
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, 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, 54/8,
55/8, 56/8, 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, 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: 75230
Total RIPE prefixes after maximum aggregation: 43549
RIPE Deaggregation factor: 1.73
Prefixes being announced from the RIPE address blocks: 68351
Unique aggregates announced from the RIPE address blocks: 44695
RIPE Region origin ASes present in the Internet Routing Table: 14643
RIPE Prefixes per ASN: 4.67
RIPE Region origin ASes announcing only one prefix: 7534
RIPE Region transit ASes present in the Internet Routing Table: 2180
Average RIPE Region AS path length visible: 3.9
Max RIPE Region AS path length visible: 24
Number of RIPE addresses announced to Internet: 433696384
Equivalent to 25 /8s, 217 /16s and 174 /24s
Percentage of available RIPE address space announced: 76.0
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, 196608-197631
RIPE Address Blocks 2/8, 25/8, 31/8, 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,
193/8, 194/8, 195/8, 212/8, 213/8, 217/8,
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 29324
Total LACNIC prefixes after maximum aggregation: 6984
LACNIC Deaggregation factor: 4.20
Prefixes being announced from the LACNIC address blocks: 27836
Unique aggregates announced from the LACNIC address blocks: 14618
LACNIC Region origin ASes present in the Internet Routing Table: 1317
LACNIC Prefixes per ASN: 21.14
LACNIC Region origin ASes announcing only one prefix: 406
LACNIC Region transit ASes present in the Internet Routing Table: 232
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 26
Number of LACNIC addresses announced to Internet: 75899776
Equivalent to 4 /8s, 134 /16s and 35 /24s
Percentage of available LACNIC address space announced: 56.5
LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
262144-263167 plus ERX transfers
LACNIC Address Blocks 177/8, 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: 7377
Total AfriNIC prefixes after maximum aggregation: 1867
AfriNIC Deaggregation factor: 3.95
Prefixes being announced from the AfriNIC address blocks: 5682
Unique aggregates announced from the AfriNIC address blocks: 1606
AfriNIC Region origin ASes present in the Internet Routing Table: 384
AfriNIC Prefixes per ASN: 14.80
AfriNIC Region origin ASes announcing only one prefix: 119
AfriNIC Region transit ASes present in the Internet Routing Table: 88
Average AfriNIC Region AS path length visible: 3.7
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 19798016
Equivalent to 1 /8s, 46 /16s and 24 /24s
Percentage of available AfriNIC address space announced: 59.0
AfriNIC AS Blocks 36864-37887, 327680-328703 & ERX transfers
AfriNIC Address Blocks 41/8, 197/8,
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
4766 1856 8409 488 Korea Telecom (KIX)
4755 1477 298 164 TATA Communications formerly
7545 1371 234 87 TPG Internet Pty Ltd
17488 1343 151 126 Hathway IP Over Cable Interne
17974 1186 287 60 PT TELEKOMUNIKASI INDONESIA
9583 1003 74 486 Sify Limited
24560 994 305 183 Bharti Airtel Ltd., Telemedia
4808 833 1582 225 CNCGROUP IP network: China169
9829 817 686 33 BSNL National Internet Backbo
4134 784 21996 412 CHINANET-BACKBONE
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
6389 3881 3716 284 bellsouth.net, inc.
4323 2735 1116 397 Time Warner Telecom
19262 1947 4567 278 Verizon Global Networks
1785 1782 698 129 PaeTec Communications, Inc.
20115 1488 1522 653 Charter Communications
7018 1467 5733 953 AT&T WorldNet Services
2386 1286 554 908 AT&T Data Communications Serv
6478 1266 253 175 AT&T Worldnet Services
22773 1174 2858 61 Cox Communications, Inc.
11492 1160 209 90 Cable One
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
35805 654 56 6 United Telecom of Georgia
9198 499 202 13 Kazakhtelecom Data Network Ad
3292 448 2026 389 TDC Tele Danmark
30890 444 111 206 Evolva Telecom
702 412 1853 324 UUNET - Commercial IP service
8866 403 117 18 Bulgarian Telecommunication C
8551 401 353 46 Bezeq International
3320 375 7329 327 Deutsche Telekom AG
3301 372 1414 327 TeliaNet Sweden
34984 364 89 183 BILISIM TELEKOM
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 1523 3048 247 UniNet S.A. de C.V.
10620 1072 240 149 TVCABLE BOGOTA
28573 1028 818 100 NET Servicos de Comunicao S.A
7303 775 396 104 Telecom Argentina Stet-France
6503 719 178 222 AVANTEL, S.A.
22047 555 310 15 VTR PUNTO NET S.A.
14420 537 34 74 CORPORACION NACIONAL DE TELEC
3816 494 210 90 Empresa Nacional de Telecomun
7738 477 922 30 Telecomunicacoes da Bahia S.A
11172 448 99 76 Servicios Alestra S.A de C.V
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
8452 1177 445 10 TEDATA
24863 726 147 39 LINKdotNET AS number
36992 654 279 185 Etisalat MISR
3741 270 898 232 The Internet Solution
33776 220 12 12 Starcomms Nigeria Limited
2018 213 277 64 Tertiary Education Network
6713 195 186 16 Itissalat Al-MAGHRIB
29571 191 19 10 Ci Telecom Autonomous system
24835 189 78 9 RAYA Telecom - Egypt
16637 140 440 95 MTN Network Solutions
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 3881 3716 284 bellsouth.net, inc.
4323 2735 1116 397 Time Warner Telecom
19262 1947 4567 278 Verizon Global Networks
4766 1856 8409 488 Korea Telecom (KIX)
1785 1782 698 129 PaeTec Communications, Inc.
8151 1523 3048 247 UniNet S.A. de C.V.
20115 1488 1522 653 Charter Communications
4755 1477 298 164 TATA Communications formerly
7018 1467 5733 953 AT&T WorldNet Services
7545 1371 234 87 TPG Internet Pty Ltd
Complete listing at http://thyme.apnic.net/current/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 2735 2338 Time Warner Telecom
19262 1947 1669 Verizon Global Networks
1785 1782 1653 PaeTec Communications, Inc.
4766 1856 1368 Korea Telecom (KIX)
4755 1477 1313 TATA Communications formerly
7545 1371 1284 TPG Internet Pty Ltd
8151 1523 1276 UniNet S.A. de C.V.
17488 1343 1217 Hathway IP Over Cable Interne
8452 1177 1167 TEDATA
17974 1186 1126 PT TELEKOMUNIKASI INDONESIA
Complete listing at http://thyme.apnic.net/current/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
16927 UNALLOCATED 12.0.252.0/23 7018 AT&T WorldNet Servic
15132 UNALLOCATED 12.9.150.0/24 7018 AT&T WorldNet Servic
32567 UNALLOCATED 12.14.170.0/24 7018 AT&T WorldNet Servic
13746 UNALLOCATED 12.24.56.0/24 7018 AT&T WorldNet Servic
32567 UNALLOCATED 12.25.107.0/24 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.152.0/24 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.154.0/23 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.155.0/24 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.159.0/24 7018 AT&T WorldNet Servic
25639 UNALLOCATED 12.41.169.0/24 7018 AT&T WorldNet Servic
Complete listing at http://thyme.apnic.net/current/data-badAS
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
24.38.240.0/21 33287 Comcast Cable Communications,
24.38.248.0/21 33287 Comcast Cable Communications,
31.0.0.0/16 12654 RIPE NCC RIS Project
31.1.0.0/21 12654 RIPE NCC RIS Project
31.1.24.0/24 12654 RIPE NCC RIS Project
41.222.79.0/24 36938 >>UNKNOWN<<
41.223.92.0/22 36936 >>UNKNOWN<<
41.223.188.0/24 22351 Intelsat
41.223.189.0/24 6453 Teleglobe Inc.
41.223.196.0/24 36990 Alkan Telecom Ltd
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 /8:21 /9:10 /10:25 /11:67 /12:198
/13:410 /14:709 /15:1296 /16:11182 /17:5376 /18:9196
/19:18500 /20:23144 /21:23148 /22:30166 /23:29780 /24:170707
/25:1051 /26:1192 /27:740 /28:118 /29:47 /30:6
/31:0 /32:7
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2485 3881 bellsouth.net, inc.
4766 1486 1856 Korea Telecom (KIX)
4323 1398 2735 Time Warner Telecom
1785 1244 1782 PaeTec Communications, Inc.
17488 1085 1343 Hathway IP Over Cable Interne
11492 1069 1160 Cable One
18566 1069 1088 Covad Communications
8452 1066 1177 TEDATA
10620 988 1072 TVCABLE BOGOTA
19262 913 1947 Verizon Global Networks
Complete listing at http://thyme.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:37 2:2 4:13 8:292 12:2016 13:7
14:1 15:21 16:3 17:8 20:6 24:1436
27:271 31:1 32:59 33:12 38:688 40:98
41:2487 44:3 46:17 47:16 52:9 55:6
56:2 57:28 58:770 59:508 60:462 61:1068
62:1038 63:1969 64:3713 65:2346 66:4052 67:1826
68:1096 69:2724 70:712 71:444 72:1944 73:2
74:2282 75:254 76:324 77:900 78:620 79:428
80:996 81:779 82:494 83:450 84:682 85:1043
86:466 87:686 88:332 89:1558 90:96 91:2896
92:507 93:1009 94:1410 95:666 96:529 97:210
98:618 99:33 100:1 108:105 109:587 110:434
111:515 112:273 113:314 114:434 115:573 116:1059
117:649 118:483 119:881 120:136 121:724 122:1517
123:950 124:1115 125:1304 128:226 129:163 130:196
131:558 132:247 133:16 134:196 135:45 136:240
137:135 138:267 139:104 140:480 141:197 142:340
143:370 144:469 145:52 146:446 147:170 148:673
149:299 150:153 151:228 152:297 153:168 154:2
155:356 156:160 157:324 158:110 159:360 160:315
161:182 162:255 163:173 164:410 165:366 166:460
167:413 168:645 169:157 170:716 171:59 172:2
173:959 174:505 175:161 176:1 178:329 180:478
182:163 183:242 184:122 186:529 187:409 188:1040
189:773 190:3861 192:5746 193:4719 194:3405 195:2818
196:1183 198:3571 199:3496 200:5355 201:1578 202:7963
203:8284 204:4042 205:2404 206:2506 207:3077 208:3874
209:3465 210:2549 211:1289 212:1714 213:1655 214:647
215:69 216:4729 217:1527 218:500 219:378 220:1143
221:399 222:313 223:2
End of report
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