Routing Table Report 04:00 +10GMT Fri 27 May, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 358088
Prefixes after maximum aggregation: 161998
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 177222
Total ASes present in the Internet Routing Table: 37689
Prefixes per ASN: 9.50
Origin-only ASes present in the Internet Routing Table: 31490
Origin ASes announcing only one prefix: 15121
Transit ASes present in the Internet Routing Table: 5098
Transit-only ASes present in the Internet Routing Table: 138
Average AS path length visible in the Internet Routing Table: 4.4
Max AS path length visible: 36
Max AS path prepend of ASN (48687) 24
Prefixes from unregistered ASNs in the Routing Table: 693
Unregistered ASNs in the Routing Table: 366
Number of 32-bit ASNs allocated by the RIRs: 1383
Number of 32-bit ASNs visible in the Routing Table: 1101
Prefixes from 32-bit ASNs in the Routing Table: 2497
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 293
Number of addresses announced to Internet: 2436968640
Equivalent to 145 /8s, 65 /16s and 48 /24s
Percentage of available address space announced: 65.7
Percentage of allocated address space announced: 65.7
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 91.0
Total number of prefixes smaller than registry allocations: 148999
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 89247
Total APNIC prefixes after maximum aggregation: 30034
APNIC Deaggregation factor: 2.97
Prefixes being announced from the APNIC address blocks: 85684
Unique aggregates announced from the APNIC address blocks: 36700
APNIC Region origin ASes present in the Internet Routing Table: 4463
APNIC Prefixes per ASN: 19.20
APNIC Region origin ASes announcing only one prefix: 1244
APNIC Region transit ASes present in the Internet Routing Table: 702
Average APNIC Region AS path length visible: 4.6
Max APNIC Region AS path length visible: 20
Number of APNIC region 32-bit ASNs visible in the Routing Table: 47
Number of APNIC addresses announced to Internet: 616653344
Equivalent to 36 /8s, 193 /16s and 98 /24s
Percentage of available APNIC address space announced: 78.2
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: 140412
Total ARIN prefixes after maximum aggregation: 71416
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 112670
Unique aggregates announced from the ARIN address blocks: 45766
ARIN Region origin ASes present in the Internet Routing Table: 14394
ARIN Prefixes per ASN: 7.83
ARIN Region origin ASes announcing only one prefix: 5487
ARIN Region transit ASes present in the Internet Routing Table: 1505
Average ARIN Region AS path length visible: 4.0
Max ARIN Region AS path length visible: 23
Number of ARIN region 32-bit ASNs visible in the Routing Table: 12
Number of ARIN addresses announced to Internet: 801896960
Equivalent to 47 /8s, 203 /16s and 250 /24s
Percentage of available ARIN address space announced: 63.7
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
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: 84788
Total RIPE prefixes after maximum aggregation: 48334
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 78088
Unique aggregates announced from the RIPE address blocks: 51740
RIPE Region origin ASes present in the Internet Routing Table: 15630
RIPE Prefixes per ASN: 5.00
RIPE Region origin ASes announcing only one prefix: 7824
RIPE Region transit ASes present in the Internet Routing Table: 2460
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: 815
Number of RIPE addresses announced to Internet: 474096128
Equivalent to 28 /8s, 66 /16s and 34 /24s
Percentage of available RIPE address space announced: 76.4
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: 32878
Total LACNIC prefixes after maximum aggregation: 7506
LACNIC Deaggregation factor: 4.38
Prefixes being announced from the LACNIC address blocks: 31924
Unique aggregates announced from the LACNIC address blocks: 16802
LACNIC Region origin ASes present in the Internet Routing Table: 1457
LACNIC Prefixes per ASN: 21.91
LACNIC Region origin ASes announcing only one prefix: 428
LACNIC Region transit ASes present in the Internet Routing Table: 266
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: 222
Number of LACNIC addresses announced to Internet: 83879424
Equivalent to 4 /8s, 255 /16s and 230 /24s
Percentage of available LACNIC address space announced: 55.6
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: 8049
Total AfriNIC prefixes after maximum aggregation: 1893
AfriNIC Deaggregation factor: 4.25
Prefixes being announced from the AfriNIC address blocks: 6373
Unique aggregates announced from the AfriNIC address blocks: 1921
AfriNIC Region origin ASes present in the Internet Routing Table: 456
AfriNIC Prefixes per ASN: 13.98
AfriNIC Region origin ASes announcing only one prefix: 138
AfriNIC Region transit ASes present in the Internet Routing Table: 100
Average AfriNIC Region AS path length visible: 4.8
Max AfriNIC Region AS path length visible: 24
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 23186176
Equivalent to 1 /8s, 97 /16s and 203 /24s
Percentage of available AfriNIC address space announced: 34.6
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 2461 9500 922 Korea Telecom (KIX)
17974 1843 516 32 PT TELEKOMUNIKASI INDONESIA
7545 1536 301 85 TPG Internet Pty Ltd
4755 1470 634 166 TATA Communications formerly
24560 1152 336 183 Bharti Airtel Ltd., Telemedia
7552 1140 1064 7 Vietel Corporation
4808 1079 2140 301 CNCGROUP IP network: China169
9583 1076 79 507 Sify Limited
9829 1035 873 54 BSNL National Internet Backbo
18101 932 116 141 Reliance Infocom Ltd Internet
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 3644 3822 255 bellsouth.net, inc.
4323 1971 1081 399 Time Warner Telecom
18566 1875 355 271 Covad Communications
1785 1788 681 123 PaeTec Communications, Inc.
6478 1704 317 50 AT&T Worldnet Services
20115 1535 1540 633 Charter Communications
19262 1490 4935 308 Verizon Global Networks
7018 1363 7068 887 AT&T WorldNet Services
22773 1334 2897 88 Cox Communications, Inc.
11492 1280 240 15 Cable One
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
34984 517 106 180 BILISIM TELEKOM
6830 516 1780 319 UPC Distribution Services
3292 461 2062 396 TDC Tele Danmark
20940 456 133 350 Akamai Technologies European
29049 451 33 48 AzerSat LLC.
8866 445 134 26 Bulgarian Telecommunication C
12479 430 577 6 Uni2 Autonomous System
3320 424 8152 370 Deutsche Telekom AG
8551 406 355 45 Bezeq International
3301 397 1855 346 TeliaNet Sweden
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 1492 274 156 TVCABLE BOGOTA
8151 1379 2710 365 UniNet S.A. de C.V.
28573 1321 991 88 NET Servicos de Comunicao S.A
7303 927 472 150 Telecom Argentina Stet-France
6503 730 354 73 AVANTEL, S.A.
14420 670 54 91 CORPORACION NACIONAL DE TELEC
22047 565 310 15 VTR PUNTO NET S.A.
3816 522 227 101 Empresa Nacional de Telecomun
13489 515 262 121 Orbitel S.A. E.S.P.
11172 495 84 84 Servicios Alestra S.A de C.V
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 878 445 11 TEDATA
24863 787 147 37 LINKdotNET AS number
15475 543 90 8 Nile Online
36992 291 315 18 Etisalat MISR
3741 263 937 226 The Internet Solution
6713 241 215 13 Itissalat Al-MAGHRIB
33776 217 12 11 Starcomms Nigeria Limited
24835 208 78 10 RAYA Telecom - Egypt
29571 163 19 12 Ci Telecom Autonomous system
16637 150 441 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 3644 3822 255 bellsouth.net, inc.
23456 2497 615 1360 32-bit ASN transition
4766 2461 9500 922 Korea Telecom (KIX)
4323 1971 1081 399 Time Warner Telecom
18566 1875 355 271 Covad Communications
17974 1843 516 32 PT TELEKOMUNIKASI INDONESIA
1785 1788 681 123 PaeTec Communications, Inc.
6478 1704 317 50 AT&T Worldnet Services
7545 1536 301 85 TPG Internet Pty Ltd
20115 1535 1540 633 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
17974 1843 1811 PT TELEKOMUNIKASI INDONESIA
1785 1788 1665 PaeTec Communications, Inc.
6478 1704 1654 AT&T Worldnet Services
18566 1875 1604 Covad Communications
4323 1971 1572 Time Warner Telecom
4766 2461 1539 Korea Telecom (KIX)
7545 1536 1451 TPG Internet Pty Ltd
10620 1492 1336 TVCABLE BOGOTA
4755 1470 1304 TATA Communications formerly
11492 1280 1265 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
24.225.128.0/18 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
27.0.128.0/17 7514 Media Exchange, Inc.
41.190.32.0/23 31856 CABSAS
41.190.34.0/23 31856 CABSAS
41.190.36.0/23 31856 CABSAS
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 /11:79 /12:228
/13:460 /14:794 /15:1393 /16:11766 /17:5831 /18:9765
/19:19297 /20:25667 /21:25914 /22:34057 /23:33070 /24:186457
/25:1086 /26:1269 /27:714 /28:165 /29:8 /30:2
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2244 3644 bellsouth.net, inc.
18566 1838 1875 Covad Communications
6478 1658 1704 AT&T Worldnet Services
10620 1382 1492 TVCABLE BOGOTA
11492 1226 1280 Cable One
23456 1208 2497 32-bit ASN transition
7011 1061 1160 Citizens Utilities
1785 1051 1788 PaeTec Communications, Inc.
4323 884 1971 Time Warner Telecom
22773 849 1334 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:279 2:51 4:16 5:1 6:3 8:353
12:1982 13:2 14:464 15:15 16:3 17:8
20:10 23:7 24:1635 27:772 31:350 32:60
33:4 34:2 37:1 38:739 40:101 41:2543
42:5 44:3 46:929 47:3 49:196 50:422
52:13 54:2 55:5 56:2 57:30 58:848
59:481 60:387 61:1238 62:1043 63:1939 64:3940
65:2293 66:4143 67:1868 68:1086 69:2992 70:704
71:352 72:1885 73:1 74:2359 75:301 76:341
77:870 78:703 79:464 80:1093 81:823 82:488
83:437 84:677 85:1061 86:586 87:755 88:330
89:1532 90:203 91:3781 92:508 93:1049 94:1274
95:805 96:506 97:249 98:850 99:35 101:58
103:24 106:1 107:7 108:84 109:949 110:601
111:714 112:307 113:401 114:535 115:669 116:954
117:694 118:826 119:1131 120:307 121:669 122:1621
123:999 124:1264 125:1229 128:262 129:172 130:164
131:570 132:109 133:19 134:213 135:48 136:215
137:144 138:300 139:112 140:483 141:239 142:402
143:402 144:483 145:54 146:445 147:208 148:589
149:242 150:170 151:186 152:324 153:178 154:3
155:396 156:194 157:352 158:137 159:387 160:317
161:207 162:282 163:164 164:497 165:356 166:517
167:426 168:732 169:153 170:803 171:77 172:1
173:1558 174:549 175:372 176:129 177:144 178:987
180:848 181:17 182:450 183:208 184:286 185:1
186:1172 187:752 188:835 189:891 190:4793 192:5795
193:4851 194:3478 195:2977 196:1224 197:19 198:3575
199:3918 200:5538 201:1482 202:8333 203:8416 204:4173
205:2329 206:2679 207:2874 208:3968 209:3467 210:2735
211:1394 212:1981 213:1732 214:739 215:72 216:4904
217:1630 218:566 219:363 220:1202 221:491 222:340
223:151
End of report
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