Routing Table Report 04:00 +10GMT Wed 04 May, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 356231
Prefixes after maximum aggregation: 161202
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 175928
Total ASes present in the Internet Routing Table: 37443
Prefixes per ASN: 9.51
Origin-only ASes present in the Internet Routing Table: 31330
Origin ASes announcing only one prefix: 15062
Transit ASes present in the Internet Routing Table: 5081
Transit-only ASes present in the Internet Routing Table: 138
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 36
Max AS path prepend of ASN (36992) 29
Prefixes from unregistered ASNs in the Routing Table: 578
Unregistered ASNs in the Routing Table: 288
Number of 32-bit ASNs allocated by the RIRs: 1321
Number of 32-bit ASNs visible in the Routing Table: 1032
Prefixes from 32-bit ASNs in the Routing Table: 2328
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 150
Number of addresses announced to Internet: 2421838528
Equivalent to 144 /8s, 90 /16s and 82 /24s
Percentage of available address space announced: 65.3
Percentage of allocated address space announced: 65.3
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.6
Total number of prefixes smaller than registry allocations: 147863
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 89139
Total APNIC prefixes after maximum aggregation: 29952
APNIC Deaggregation factor: 2.98
Prefixes being announced from the APNIC address blocks: 85575
Unique aggregates announced from the APNIC address blocks: 36937
APNIC Region origin ASes present in the Internet Routing Table: 4427
APNIC Prefixes per ASN: 19.33
APNIC Region origin ASes announcing only one prefix: 1228
APNIC Region transit ASes present in the Internet Routing Table: 707
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 18
Number of APNIC region 32-bit ASNs visible in the Routing Table: 48
Number of APNIC addresses announced to Internet: 611994144
Equivalent to 36 /8s, 122 /16s and 74 /24s
Percentage of available APNIC address space announced: 77.6
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, 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: 140314
Total ARIN prefixes after maximum aggregation: 71323
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 112615
Unique aggregates announced from the ARIN address blocks: 45251
ARIN Region origin ASes present in the Internet Routing Table: 14348
ARIN Prefixes per ASN: 7.85
ARIN Region origin ASes announcing only one prefix: 5482
ARIN Region transit ASes present in the Internet Routing Table: 1496
Average ARIN Region AS path length visible: 3.9
Max ARIN Region AS path length visible: 23
Number of ARIN region 32-bit ASNs visible in the Routing Table: 11
Number of ARIN addresses announced to Internet: 799768576
Equivalent to 47 /8s, 171 /16s and 128 /24s
Percentage of available ARIN address space announced: 63.6
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: 83875
Total RIPE prefixes after maximum aggregation: 47961
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 77292
Unique aggregates announced from the RIPE address blocks: 51165
RIPE Region origin ASes present in the Internet Routing Table: 15555
RIPE Prefixes per ASN: 4.97
RIPE Region origin ASes announcing only one prefix: 7798
RIPE Region transit ASes present in the Internet Routing Table: 2448
Average RIPE Region AS path length visible: 4.7
Max RIPE Region AS path length visible: 36
Number of RIPE region 32-bit ASNs visible in the Routing Table: 765
Number of RIPE addresses announced to Internet: 467718656
Equivalent to 27 /8s, 224 /16s and 210 /24s
Percentage of available RIPE address space announced: 75.3
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: 32572
Total LACNIC prefixes after maximum aggregation: 7487
LACNIC Deaggregation factor: 4.35
Prefixes being announced from the LACNIC address blocks: 31595
Unique aggregates announced from the LACNIC address blocks: 16569
LACNIC Region origin ASes present in the Internet Routing Table: 1446
LACNIC Prefixes per ASN: 21.85
LACNIC Region origin ASes announcing only one prefix: 422
LACNIC Region transit ASes present in the Internet Routing Table: 268
Average LACNIC Region AS path length visible: 4.4
Max LACNIC Region AS path length visible: 19
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 203
Number of LACNIC addresses announced to Internet: 83028224
Equivalent to 4 /8s, 242 /16s and 233 /24s
Percentage of available LACNIC address space announced: 55.0
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: 7785
Total AfriNIC prefixes after maximum aggregation: 1853
AfriNIC Deaggregation factor: 4.20
Prefixes being announced from the AfriNIC address blocks: 6154
Unique aggregates announced from the AfriNIC address blocks: 1907
AfriNIC Region origin ASes present in the Internet Routing Table: 446
AfriNIC Prefixes per ASN: 13.80
AfriNIC Region origin ASes announcing only one prefix: 132
AfriNIC Region transit ASes present in the Internet Routing Table: 96
Average AfriNIC Region AS path length visible: 4.7
Max AfriNIC Region AS path length visible: 31
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 23413760
Equivalent to 1 /8s, 101 /16s and 68 /24s
Percentage of available AfriNIC address space announced: 34.9
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 2436 9490 906 Korea Telecom (KIX)
17974 1819 515 29 PT TELEKOMUNIKASI INDONESIA
7545 1557 301 83 TPG Internet Pty Ltd
4755 1461 634 167 TATA Communications formerly
7552 1210 1064 7 Vietel Corporation
24560 1152 336 184 Bharti Airtel Ltd., Telemedia
9583 1057 77 492 Sify Limited
4808 1034 2090 294 CNCGROUP IP network: China169
9829 1011 874 51 BSNL National Internet Backbo
17488 945 165 100 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 3647 3822 255 bellsouth.net, inc.
4323 2601 1087 398 Time Warner Telecom
18566 1791 349 229 Covad Communications
1785 1785 681 127 PaeTec Communications, Inc.
6478 1660 312 48 AT&T Worldnet Services
20115 1536 1552 639 Charter Communications
19262 1478 4916 333 Verizon Global Networks
7018 1354 6910 887 AT&T WorldNet Services
22773 1301 2865 85 Cox Communications, Inc.
2386 1267 536 910 AT&T Data Communications Serv
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
6830 520 1780 322 UPC Distribution Services
34984 509 106 182 BILISIM TELEKOM
3292 457 1997 391 TDC Tele Danmark
29049 450 33 48 AzerSat LLC.
8866 446 134 26 Bulgarian Telecommunication C
20940 443 129 339 Akamai Technologies European
3320 423 7609 368 Deutsche Telekom AG
12479 408 577 6 Uni2 Autonomous System
8551 406 355 45 Bezeq International
702 396 1802 309 UUNET - Commercial IP service
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 1449 268 157 TVCABLE BOGOTA
28573 1295 990 88 NET Servicos de Comunicao S.A
8151 1252 2698 363 UniNet S.A. de C.V.
7303 924 467 146 Telecom Argentina Stet-France
6503 797 354 73 AVANTEL, S.A.
14420 665 53 91 CORPORACION NACIONAL DE TELEC
22047 564 310 15 VTR PUNTO NET S.A.
3816 518 226 99 Empresa Nacional de Telecomun
11172 493 84 82 Servicios Alestra S.A de C.V
13489 485 229 116 Orbitel S.A. E.S.P.
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 883 445 11 TEDATA
24863 780 147 37 LINKdotNET AS number
15475 420 90 8 Nile Online
36992 296 415 13 Etisalat MISR
3741 267 985 227 The Internet Solution
6713 240 215 13 Itissalat Al-MAGHRIB
33776 214 12 12 Starcomms Nigeria Limited
24835 207 78 10 RAYA Telecom - Egypt
29571 161 17 11 Ci Telecom Autonomous system
16637 149 441 86 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 3647 3822 255 bellsouth.net, inc.
4323 2601 1087 398 Time Warner Telecom
4766 2436 9490 906 Korea Telecom (KIX)
23456 2328 659 1266 32-bit ASN transition
17974 1819 515 29 PT TELEKOMUNIKASI INDONESIA
18566 1791 349 229 Covad Communications
1785 1785 681 127 PaeTec Communications, Inc.
6478 1660 312 48 AT&T Worldnet Services
7545 1557 301 83 TPG Internet Pty Ltd
20115 1536 1552 639 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
4323 2601 2203 Time Warner Telecom
17974 1819 1790 PT TELEKOMUNIKASI INDONESIA
1785 1785 1658 PaeTec Communications, Inc.
6478 1660 1612 AT&T Worldnet Services
18566 1791 1562 Covad Communications
4766 2436 1530 Korea Telecom (KIX)
7545 1557 1474 TPG Internet Pty Ltd
4755 1461 1294 TATA Communications formerly
10620 1449 1292 TVCABLE BOGOTA
11492 1263 1248 Cable One
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
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
13317 UNALLOCATED 12.44.10.0/24 7018 AT&T WorldNet Servic
23502 UNALLOCATED 12.44.44.0/24 7018 AT&T WorldNet Servic
Complete listing at http://thyme.rand.apnic.net/current/data-badAS
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
24.52.176.0/20 7065 Sonoma Interconnect
24.225.128.0/18 36377 Comcast Telecommunications, I
24.225.192.0/23 36377 Comcast Telecommunications, I
24.225.192.0/18 36377 Comcast Telecommunications, I
24.225.224.0/21 36377 Comcast Telecommunications, I
24.225.237.0/24 36377 Comcast Telecommunications, I
24.225.248.0/21 36377 Comcast Telecommunications, I
31.208.0.0/16 29518 Labs2
31.209.0.0/18 29518 Labs2
31.209.80.0/20 50629 LWLcom GmbH
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 /8:20 /9:12 /10:28 /11:77 /12:222
/13:459 /14:790 /15:1384 /16:11683 /17:5761 /18:9658
/19:19205 /20:25609 /21:25707 /22:33947 /23:32694 /24:185852
/25:1089 /26:1271 /27:708 /28:39 /29:8 /30:2
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2248 3647 bellsouth.net, inc.
18566 1759 1791 Covad Communications
6478 1614 1660 AT&T Worldnet Services
10620 1339 1449 TVCABLE BOGOTA
4323 1306 2601 Time Warner Telecom
11492 1212 1263 Cable One
23456 1170 2328 32-bit ASN transition
7011 1062 1162 Citizens Utilities
1785 1054 1785 PaeTec Communications, Inc.
22773 845 1301 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:265 2:54 4:14 5:1 6:3 8:353
9:1 12:1987 13:1 14:449 15:15 16:3
17:8 20:10 23:5 24:1622 27:729 31:237
32:60 33:3 34:2 37:1 38:765 40:101
41:2475 42:4 44:3 46:884 47:4 49:171
50:380 52:13 55:5 56:2 57:30 58:843
59:483 60:387 61:1267 62:998 63:1927 64:3944
65:2319 66:4350 67:1866 68:1080 69:2965 70:698
71:346 72:1891 73:1 74:2357 75:301 76:338
77:835 78:687 79:455 80:1095 81:815 82:494
83:447 84:642 85:1076 86:564 87:748 88:322
89:1595 90:183 91:3720 92:512 93:1058 94:1263
95:792 96:478 97:255 98:840 99:35 101:69
103:9 106:1 107:8 108:83 109:945 110:564
111:704 112:318 113:402 114:522 115:683 116:955
117:676 118:813 119:1140 120:302 121:671 122:1617
123:1077 124:1253 125:1221 128:261 129:163 130:172
131:566 132:110 133:19 134:217 135:49 136:214
137:142 138:302 139:113 140:480 141:239 142:400
143:402 144:486 145:52 146:441 147:210 148:594
149:243 150:171 151:187 152:309 153:179 154:3
155:396 156:190 157:353 158:132 159:383 160:314
161:212 162:279 163:164 164:480 165:348 166:510
167:427 168:719 169:153 170:791 171:76 172:1
173:1541 174:537 175:363 177:92 178:860 180:816
181:16 182:436 183:205 184:256 185:1 186:1152
187:790 188:839 189:942 190:4850 192:5794 193:4842
194:3471 195:2973 196:1198 197:16 198:3564 199:3913
200:5532 201:1508 202:8344 203:8447 204:4140 205:2323
206:2756 207:3039 208:3957 209:3482 210:2729 211:1385
212:1975 213:1712 214:732 215:68 216:4881 217:1649
218:563 219:374 220:1202 221:484 222:342 223:144
End of report
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