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From: Routing Analysis Role Account (no email)
Date: Fri May 02 2008 - 14:06:35 EDT
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
For historical data, please see http://thyme.apnic.net.
If you have any comments please contact Philip Smith <>.
Routing Table Report 04:00 +10GMT Sat 03 May, 2008
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 254787
Prefixes after maximum aggregation: 127004
Deaggregation factor: 2.01
Unique aggregates announced to Internet: 123511
Total ASes present in the Internet Routing Table: 28069
Prefixes per ASN: 9.08
Origin-only ASes present in the Internet Routing Table: 24458
Origin ASes announcing only one prefix: 11398
Transit ASes present in the Internet Routing Table: 3611
Transit-only ASes present in the Internet Routing Table: 82
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 19
Max AS path prepend of ASN (44859) 15
Prefixes from unregistered ASNs in the Routing Table: 25380
Unregistered ASNs in the Routing Table: 1890
Number of 32-bit ASNs allocated by the RIRs: 46
Prefixes from 32-bit ASNs in the Routing Table: 10
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 790
Number of addresses announced to Internet: 1865259040
Equivalent to 111 /8s, 45 /16s and 152 /24s
Percentage of available address space announced: 50.3
Percentage of allocated address space announced: 61.8
Percentage of available address space allocated: 81.4
Percentage of address space in use by end-sites: 71.7
Total number of prefixes smaller than registry allocations: 122514
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 43073
Total APNIC prefixes after maximum aggregation: 13461
APNIC Deaggregation factor: 3.20
Prefixes being announced from the APNIC address blocks: 55456
Unique aggregates announced from the APNIC address blocks: 23561
APNIC Region origin ASes present in the Internet Routing Table: 1934
APNIC Prefixes per ASN: 28.67
APNIC Region origin ASes announcing only one prefix: 553
APNIC Region transit ASes present in the Internet Routing Table: 350
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 346760800
Equivalent to 20 /8s, 171 /16s and 38 /24s
Percentage of available APNIC address space announced: 79.5
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079
APNIC Address Blocks 58/8, 59/8, 60/8, 61/8, 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, 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: 107789
Total ARIN prefixes after maximum aggregation: 59234
ARIN Deaggregation factor: 1.82
Prefixes being announced from the ARIN address blocks: 86721
Unique aggregates announced from the ARIN address blocks: 34340
ARIN Region origin ASes present in the Internet Routing Table: 11784
ARIN Prefixes per ASN: 7.36
ARIN Region origin ASes announcing only one prefix: 4611
ARIN Region transit ASes present in the Internet Routing Table: 1044
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 358349568
Equivalent to 21 /8s, 91 /16s and 251 /24s
Percentage of available ARIN address space announced: 73.7
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
ARIN Address Blocks 24/8, 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, 173/8, 174/8,
199/8, 204/8, 205/8, 206/8, 207/8, 208/8, 209/8,
216/8,
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 54894
Total RIPE prefixes after maximum aggregation: 33555
RIPE Deaggregation factor: 1.64
Prefixes being announced from the RIPE address blocks: 50101
Unique aggregates announced from the RIPE address blocks: 33548
RIPE Region origin ASes present in the Internet Routing Table: 11253
RIPE Prefixes per ASN: 4.45
RIPE Region origin ASes announcing only one prefix: 5880
RIPE Region transit ASes present in the Internet Routing Table: 1720
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 355464448
Equivalent to 21 /8s, 47 /16s and 245 /24s
Percentage of available RIPE address space announced: 81.5
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 - 48127
RIPE Address Blocks 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, 193/8,
194/8, 195/8, 212/8, 213/8, 217/8,
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 19830
Total LACNIC prefixes after maximum aggregation: 4971
LACNIC Deaggregation factor: 3.99
Prefixes being announced from the LACNIC address blocks: 18261
Unique aggregates announced from the LACNIC address blocks: 9839
LACNIC Region origin ASes present in the Internet Routing Table: 893
LACNIC Prefixes per ASN: 20.45
LACNIC Region origin ASes announcing only one prefix: 277
LACNIC Region transit ASes present in the Internet Routing Table: 154
Average LACNIC Region AS path length visible: 4.1
Max LACNIC Region AS path length visible: 19
Number of LACNIC addresses announced to Internet: 50827264
Equivalent to 3 /8s, 7 /16s and 144 /24s
Percentage of available LACNIC address space announced: 50.5
LACNIC AS Blocks 26592-26623, 27648-28671, 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: 3820
Total AfriNIC prefixes after maximum aggregation: 1216
AfriNIC Deaggregation factor: 3.14
Prefixes being announced from the AfriNIC address blocks: 4152
Unique aggregates announced from the AfriNIC address blocks: 1842
AfriNIC Region origin ASes present in the Internet Routing Table: 241
AfriNIC Prefixes per ASN: 17.23
AfriNIC Region origin ASes announcing only one prefix: 77
AfriNIC Region transit ASes present in the Internet Routing Table: 48
Average AfriNIC Region AS path length visible: 4.0
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 11770624
Equivalent to 0 /8s, 179 /16s and 155 /24s
Percentage of available AfriNIC address space announced: 35.1
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
4755 1640 387 90 Videsh Sanchar Nigam Ltd. Aut
9583 1174 140 16 Sify Limited
9498 1165 550 61 BHARTI BT INTERNET LTD.
17488 1060 70 75 Hathway IP Over Cable Interne
4134 855 12615 319 CHINANET-BACKBONE
4766 850 6006 345 Korea Telecom (KIX)
18101 680 149 54 Reliance Infocom Ltd Internet
9829 598 450 12 BSNL National Internet Backbo
1221 544 1918 418 Telstra Pty Ltd
4808 515 829 129 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
4323 1425 1014 376 Time Warner Telecom
7018 1403 5977 1000 AT&T WorldNet Services
2386 1396 642 862 AT&T Data Communications Serv
11492 1211 146 36 Cable One
7011 1098 319 626 Citizens Utilities
18566 1043 296 10 Covad Communications
1785 1014 511 106 AppliedTheory Corporation
6197 987 598 508 BellSouth Network Solutions,
174 971 6835 802 Cogent Communications
22773 948 2394 62 Cox Communications, Inc.
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
3292 407 1788 367 TDC Tele Danmark
9198 401 74 9 Kazakhtelecom Data Network Ad
8452 356 188 7 TEDATA
3301 338 1458 306 TeliaNet Sweden
3320 324 7044 267 Deutsche Telekom AG
8866 298 78 24 Bulgarian Telecommunication C
5462 292 666 26 Telewest Broadband
8551 282 269 37 Bezeq International
3215 277 2678 89 France Telecom Transpac
680 272 2047 262 DFN-IP service G-WiN
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 1201 2432 223 UniNet S.A. de C.V.
11830 601 299 9 Instituto Costarricense de El
22047 564 270 14 VTR PUNTO NET S.A.
7303 455 222 60 Telecom Argentina Stet-France
16814 426 27 10 NSS, S.A.
6471 416 85 46 ENTEL CHILE S.A.
11172 415 117 69 Servicios Alestra S.A de C.V
10620 388 99 76 TVCABLE BOGOTA
14117 384 25 15 Telefonica del Sur S.A.
20299 341 36 31 NEWCOM AMERICAS
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
24863 464 61 27 LINKdotNET AS number
3741 289 853 223 The Internet Solution
20858 218 34 3 EgyNet
2018 179 190 86 Tertiary Education Network
5713 150 558 120 Telkom SA Ltd
6713 143 135 11 Itissalat Al-MAGHRIB
33783 134 10 12 EEPAD TISP TELECOM & INTERNET
5536 121 8 16 Internet Egypt Network
29571 116 13 8 Ci Telecom Autonomous system
33776 99 6 7 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 2900 3021 117 bellsouth.net, inc.
23577 1642 34 701 Korea Telecom (ATM-MPLS)
4755 1640 387 90 Videsh Sanchar Nigam Ltd. Aut
4323 1425 1014 376 Time Warner Telecom
7018 1403 5977 1000 AT&T WorldNet Services
2386 1396 642 862 AT&T Data Communications Serv
11492 1211 146 36 Cable One
8151 1201 2432 223 UniNet S.A. de C.V.
9583 1174 140 16 Sify Limited
9498 1165 550 61 BHARTI BT INTERNET LTD.
Complete listing at http://thyme.apnic.net/current/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4755 1640 1550 Videsh Sanchar Nigam Ltd. Aut
11492 1211 1175 Cable One
9583 1174 1158 Sify Limited
9498 1165 1104 BHARTI BT INTERNET LTD.
4323 1425 1049 Time Warner Telecom
18566 1043 1033 Covad Communications
17488 1060 985 Hathway IP Over Cable Interne
8151 1201 978 UniNet S.A. de C.V.
17676 1016 951 Softbank BB Corp.
23577 1642 941 Korea Telecom (ATM-MPLS)
Complete listing at http://thyme.apnic.net/current/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
14780 UNALLOCATED 4.79.181.0/24 10310 Yahoo!
12180 UNALLOCATED 4.79.248.0/24 1239 Sprint
12180 UNALLOCATED 8.10.16.0/24 3549 Global Crossing
12180 UNALLOCATED 8.10.58.0/23 3549 Global Crossing
14779 UNALLOCATED 8.12.144.0/24 10310 Yahoo!
16927 UNALLOCATED 12.0.252.0/23 701 UUNET Technologies,
22492 UNALLOCATED 12.2.46.0/24 1239 Sprint
15132 UNALLOCATED 12.9.150.0/24 701 UUNET Technologies,
32567 UNALLOCATED 12.14.170.0/24 7018 AT&T WorldNet Servic
13632 UNALLOCATED 12.20.55.0/24 6517 Yipes Communications
Complete listing at http://thyme.apnic.net/current/data-badAS
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
24.51.159.0/24 7843 Adelphia Corp.
24.54.224.0/19 20001 HoldCo LLC - Road Runner
24.75.160.0/19 7843 Adelphia Corp.
24.75.192.0/18 7843 Adelphia Corp.
24.142.40.0/21 7018 AT&T WorldNet Services
24.142.160.0/19 7018 AT&T WorldNet Services
24.246.0.0/17 7018 AT&T WorldNet Services
24.246.128.0/18 7018 AT&T WorldNet Services
62.61.220.0/24 24974 Tachyon Europe BV - Wireless
63.140.213.0/24 22555 Universal Talkware Corporatio
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 /9:9 /10:16 /11:42 /12:139
/13:280 /14:506 /15:1002 /16:9886 /17:4361 /18:7292
/19:15380 /20:17794 /21:17202 /22:21610 /23:22706 /24:134198
/25:783 /26:939 /27:497 /28:108 /29:9 /30:1
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
11492 1197 1211 Cable One
2386 1096 1396 AT&T Data Communications Serv
18566 1024 1043 Covad Communications
9583 1009 1174 Sify Limited
7011 981 1098 Citizens Utilities
4755 975 1640 Videsh Sanchar Nigam Ltd. Aut
6478 934 935 AT&T Worldnet Services
6389 899 2900 bellsouth.net, inc.
17488 872 1060 Hathway IP Over Cable Interne
9498 841 1165 BHARTI BT INTERNET LTD.
Complete listing at http://thyme.apnic.net/current/data/sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:9 8:106 12:2027 13:1 15:20 16:3
17:5 18:13 20:35 24:1072 25:1 32:61
33:4 38:419 40:94 41:662 44:2 47:8
52:3 55:3 56:3 57:22 58:513 59:460
60:441 61:984 62:1109 63:1962 64:3411 65:2434
66:3629 67:1170 68:674 69:2192 70:599 71:126
72:1675 73:6 74:950 75:228 76:303 77:648
78:605 79:149 80:898 81:856 82:624 83:372
84:545 85:993 86:399 87:655 88:345 89:1278
90:11 91:1213 92:293 93:360 96:25 97:14
98:151 99:3 116:634 117:297 118:124 119:374
120:14 121:525 122:756 123:320 124:853 125:1120
128:292 129:198 130:129 131:405 132:67 133:9
134:179 135:32 136:223 137:112 138:150 139:62
140:485 141:96 142:395 143:285 144:357 145:50
146:358 147:150 148:506 149:183 150:131 151:181
152:141 153:133 154:10 155:269 156:207 157:267
158:168 159:221 160:253 161:111 162:208 163:194
164:582 165:448 166:304 167:320 168:614 169:128
170:422 171:28 172:2 189:164 190:1822 192:5773
193:4097 194:3255 195:2417 196:1057 198:3743 199:3227
200:5651 201:1447 202:7542 203:7829 204:3998 205:2090
206:2394 207:2749 208:3295 209:3444 210:2539 211:1044
212:1369 213:1634 214:445 215:51 216:4337 217:1218
218:347 219:406 220:1069 221:482 222:305
End of report
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