Weekly Routing Table Report
Routing Analysis Role Account
cscora at apnic.net
Fri Sep 4 18:12:07 UTC 2009
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 05 Sep, 2009
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 294331
Prefixes after maximum aggregation: 139398
Deaggregation factor: 2.11
Unique aggregates announced to Internet: 147041
Total ASes present in the Internet Routing Table: 32126
Prefixes per ASN: 9.16
Origin-only ASes present in the Internet Routing Table: 27940
Origin ASes announcing only one prefix: 13641
Transit ASes present in the Internet Routing Table: 4186
Transit-only ASes present in the Internet Routing Table: 104
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 24
Max AS path prepend of ASN (12026) 22
Prefixes from unregistered ASNs in the Routing Table: 407
Unregistered ASNs in the Routing Table: 114
Number of 32-bit ASNs allocated by the RIRs: 260
Prefixes from 32-bit ASNs in the Routing Table: 105
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 319
Number of addresses announced to Internet: 2101706432
Equivalent to 125 /8s, 69 /16s and 126 /24s
Percentage of available address space announced: 56.7
Percentage of allocated address space announced: 64.9
Percentage of available address space allocated: 87.3
Percentage of address space in use by end-sites: 78.8
Total number of prefixes smaller than registry allocations: 140659
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 70157
Total APNIC prefixes after maximum aggregation: 24968
APNIC Deaggregation factor: 2.81
Prefixes being announced from the APNIC address blocks: 69597
Unique aggregates announced from the APNIC address blocks: 31670
APNIC Region origin ASes present in the Internet Routing Table: 3774
APNIC Prefixes per ASN: 18.44
APNIC Region origin ASes announcing only one prefix: 1035
APNIC Region transit ASes present in the Internet Routing Table: 580
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 493030848
Equivalent to 29 /8s, 99 /16s and 13 /24s
Percentage of available APNIC address space announced: 84.0
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079
APNIC Address Blocks 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, 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,
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 124764
Total ARIN prefixes after maximum aggregation: 66482
ARIN Deaggregation factor: 1.88
Prefixes being announced from the ARIN address blocks: 125341
Unique aggregates announced from the ARIN address blocks: 52721
ARIN Region origin ASes present in the Internet Routing Table: 13211
ARIN Prefixes per ASN: 9.49
ARIN Region origin ASes announcing only one prefix: 5107
ARIN Region transit ASes present in the Internet Routing Table: 1297
Average ARIN Region AS path length visible: 3.3
Max ARIN Region AS path length visible: 24
Number of ARIN addresses announced to Internet: 1013346368
Equivalent to 60 /8s, 102 /16s and 112 /24s
Percentage of available ARIN address space announced: 88.8
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
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, 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, 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: 67698
Total RIPE prefixes after maximum aggregation: 39917
RIPE Deaggregation factor: 1.70
Prefixes being announced from the RIPE address blocks: 67311
Unique aggregates announced from the RIPE address blocks: 45605
RIPE Region origin ASes present in the Internet Routing Table: 13456
RIPE Prefixes per ASN: 5.00
RIPE Region origin ASes announcing only one prefix: 7031
RIPE Region transit ASes present in the Internet Routing Table: 2002
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 21
Number of RIPE addresses announced to Internet: 499964864
Equivalent to 29 /8s, 204 /16s and 219 /24s
Percentage of available RIPE address space announced: 99.3
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
RIPE Address Blocks 25/8, 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, 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: 25342
Total LACNIC prefixes after maximum aggregation: 6213
LACNIC Deaggregation factor: 4.08
Prefixes being announced from the LACNIC address blocks: 25334
Unique aggregates announced from the LACNIC address blocks: 14125
LACNIC Region origin ASes present in the Internet Routing Table: 1174
LACNIC Prefixes per ASN: 21.58
LACNIC Region origin ASes announcing only one prefix: 380
LACNIC Region transit ASes present in the Internet Routing Table: 192
Average LACNIC Region AS path length visible: 4.1
Max LACNIC Region AS path length visible: 22
Number of LACNIC addresses announced to Internet: 73761280
Equivalent to 4 /8s, 101 /16s and 130 /24s
Percentage of available LACNIC address space announced: 73.3
LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247
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: 6028
Total AfriNIC prefixes after maximum aggregation: 1570
AfriNIC Deaggregation factor: 3.84
Prefixes being announced from the AfriNIC address blocks: 6429
Unique aggregates announced from the AfriNIC address blocks: 2659
AfriNIC Region origin ASes present in the Internet Routing Table: 313
AfriNIC Prefixes per ASN: 20.54
AfriNIC Region origin ASes announcing only one prefix: 88
AfriNIC Region transit ASes present in the Internet Routing Table: 67
Average AfriNIC Region AS path length visible: 3.8
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 20185600
Equivalent to 1 /8s, 52 /16s and 2 /24s
Percentage of available AfriNIC address space announced: 60.2
AfriNIC AS Blocks 36864-37887 & 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 1723 6982 427 Korea Telecom (KIX)
17488 1553 140 103 Hathway IP Over Cable Interne
4755 1231 292 141 TATA Communications formerly
9583 1095 87 534 Sify Limited
4134 1001 18165 390 CHINANET-BACKBONE
18101 952 201 31 Reliance Infocom Ltd Internet
7545 822 198 102 TPG Internet Pty Ltd
9829 798 625 18 BSNL National Internet Backbo
23577 770 33 654 Korea Telecom (ATM-MPLS)
4808 767 1531 182 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
6389 4178 3610 312 bellsouth.net, inc.
4323 1924 1049 387 Time Warner Telecom
1785 1736 714 137 PaeTec Communications, Inc.
7018 1495 5908 1059 AT&T WorldNet Services
20115 1472 1475 683 Charter Communications
6478 1396 281 260 AT&T Worldnet Services
2386 1289 655 936 AT&T Data Communications Serv
3356 1218 10980 440 Level 3 Communications, LLC
22773 1095 2604 66 Cox Communications, Inc.
11492 1092 208 12 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
30890 487 92 197 Evolva Telecom
12479 477 578 6 Uni2 Autonomous System
3292 458 1904 395 TDC Tele Danmark
702 426 1821 344 UUNET - Commercial IP service
35805 385 40 5 United Telecom of Georgia
9198 368 138 12 Kazakhtelecom Data Network Ad
8866 358 109 22 Bulgarian Telecommunication C
3320 353 7067 303 Deutsche Telekom AG
3301 347 1412 308 TeliaNet Sweden
3215 344 3081 109 France Telecom Transpac
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 1477 2898 242 UniNet S.A. de C.V.
10620 1009 226 99 TVCABLE BOGOTA
28573 697 607 61 NET Servicos de Comunicao S.A
7303 635 336 93 Telecom Argentina Stet-France
22047 542 302 14 VTR PUNTO NET S.A.
11830 476 310 58 Instituto Costarricense de El
11172 441 99 70 Servicios Alestra S.A de C.V
14117 435 29 11 Telefonica del Sur S.A.
6471 421 96 31 ENTEL CHILE S.A.
7738 419 858 29 Telecomunicacoes da Bahia S.A
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 989 188 7 TEDATA
24863 884 94 60 LINKdotNET AS number
20858 296 34 6 EgyNet
3741 274 856 235 The Internet Solution
2018 202 180 142 Tertiary Education Network
6713 175 166 16 Itissalat Al-MAGHRIB
29571 139 14 6 Ci Telecom Autonomous system
5536 122 8 13 Internet Egypt Network
5713 116 508 67 Telkom SA Ltd
33776 115 7 11 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 4178 3610 312 bellsouth.net, inc.
4323 1924 1049 387 Time Warner Telecom
1785 1736 714 137 PaeTec Communications, Inc.
4766 1723 6982 427 Korea Telecom (KIX)
17488 1553 140 103 Hathway IP Over Cable Interne
7018 1495 5908 1059 AT&T WorldNet Services
8151 1477 2898 242 UniNet S.A. de C.V.
20115 1472 1475 683 Charter Communications
6478 1396 281 260 AT&T Worldnet Services
2386 1289 655 936 AT&T Data Communications Serv
Complete listing at http://thyme.apnic.net/current/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
1785 1736 1599 PaeTec Communications, Inc.
4323 1924 1537 Time Warner Telecom
17488 1553 1450 Hathway IP Over Cable Interne
4766 1723 1296 Korea Telecom (KIX)
8151 1477 1235 UniNet S.A. de C.V.
6478 1396 1136 AT&T Worldnet Services
4755 1231 1090 TATA Communications formerly
11492 1092 1080 Cable One
18566 1062 1052 Covad Communications
22773 1095 1029 Cox Communications, Inc.
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 12.39.159.0/24 7018 AT&T WorldNet Servic
32326 UNALLOCATED 12.40.49.0/24 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
41.223.92.0/22 36936 >>UNKNOWN<<
41.223.176.0/22 36981 >>UNKNOWN<<
41.223.189.0/24 26452 Local Communications Networks
43.245.0.0/16 7502 Internetwork Kyoto
43.245.96.0/20 7502 Internetwork Kyoto
43.245.112.0/20 7502 Internetwork Kyoto
43.245.192.0/20 7502 Internetwork Kyoto
43.245.208.0/20 7502 Internetwork Kyoto
43.245.224.0/20 7502 Internetwork Kyoto
62.61.220.0/24 24974 Tachyon Europe BV - Wireless
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 /8:19 /9:10 /10:25 /11:62 /12:168
/13:351 /14:624 /15:1181 /16:10644 /17:4824 /18:8362
/19:17349 /20:20714 /21:20551 /22:26629 /23:26406 /24:153628
/25:946 /26:1077 /27:583 /28:153 /29:8 /30:9
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2708 4178 bellsouth.net, inc.
4766 1408 1723 Korea Telecom (KIX)
17488 1299 1553 Hathway IP Over Cable Interne
1785 1206 1736 PaeTec Communications, Inc.
18566 1043 1062 Covad Communications
11492 1021 1092 Cable One
4323 968 1924 Time Warner Telecom
9583 947 1095 Sify Limited
10620 915 1009 TVCABLE BOGOTA
8452 913 989 TEDATA
Complete listing at http://thyme.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:14 8:213 12:2137 13:7 15:21 16:3
17:5 20:35 24:1117 32:52 34:2 38:598
40:97 41:1730 43:1 44:2 47:20 52:6
55:2 56:2 57:25 58:595 59:607 60:461
61:958 62:1074 63:2013 64:3631 65:2392 66:3438
67:1773 68:946 69:2733 70:557 71:163 72:1682
73:2 74:1732 75:179 76:322 77:861 78:577
79:375 80:913 81:819 82:528 83:426 84:638
85:1042 86:378 87:674 88:369 89:1472 90:52
91:2520 92:397 93:1134 94:1155 95:912 96:166
97:268 98:271 99:30 109:1 110:184 111:398
112:128 113:151 114:243 115:306 116:1135 117:565
118:322 119:774 120:122 121:652 122:1247 123:761
124:1067 125:1356 128:223 129:219 130:129 131:420
132:75 133:9 134:174 135:42 136:225 137:161
138:171 139:84 140:442 141:125 142:385 143:332
144:385 145:49 146:390 147:157 148:530 149:213
150:205 151:186 152:210 153:153 154:2 155:279
156:167 157:305 158:112 159:349 160:291 161:164
162:270 163:159 164:276 165:526 166:474 167:365
168:708 169:167 170:481 171:42 172:2 173:407
174:332 175:1 178:1 180:17 182:1 186:141
187:150 188:761 189:580 190:3026 192:5766 193:4251
194:3284 195:2742 196:1126 198:3543 199:3356 200:5178
201:1306 202:7783 203:8285 204:3890 205:2195 206:2391
207:2739 208:3948 209:3406 210:2543 211:1107 212:1602
213:1649 214:174 215:32 216:4292 217:1334 218:411
219:414 220:1110 221:462 222:323
End of report
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