Routing Table Report 04:00 +10GMT Thu 28 Apr, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 355833
Prefixes after maximum aggregation: 160938
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 175635
Total ASes present in the Internet Routing Table: 37427
Prefixes per ASN: 9.51
Origin-only ASes present in the Internet Routing Table: 31359
Origin ASes announcing only one prefix: 15089
Transit ASes present in the Internet Routing Table: 5047
Transit-only ASes present in the Internet Routing Table: 137
Average AS path length visible in the Internet Routing Table: 4.4
Max AS path length visible: 36
Max AS path prepend of ASN (36992) 29
Prefixes from unregistered ASNs in the Routing Table: 574
Unregistered ASNs in the Routing Table: 285
Number of 32-bit ASNs allocated by the RIRs: 1311
Number of 32-bit ASNs visible in the Routing Table: 1021
Prefixes from 32-bit ASNs in the Routing Table: 2284
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 151
Number of addresses announced to Internet: 2420197312
Equivalent to 144 /8s, 65 /16s and 71 /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: 147804
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 88923
Total APNIC prefixes after maximum aggregation: 29940
APNIC Deaggregation factor: 2.97
Prefixes being announced from the APNIC address blocks: 85401
Unique aggregates announced from the APNIC address blocks: 36918
APNIC Region origin ASes present in the Internet Routing Table: 4426
APNIC Prefixes per ASN: 19.30
APNIC Region origin ASes announcing only one prefix: 1230
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: 18
Number of APNIC region 32-bit ASNs visible in the Routing Table: 48
Number of APNIC addresses announced to Internet: 611001632
Equivalent to 36 /8s, 107 /16s and 37 /24s
Percentage of available APNIC address space announced: 77.5
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: 140125
Total ARIN prefixes after maximum aggregation: 71244
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 112453
Unique aggregates announced from the ARIN address blocks: 45234
ARIN Region origin ASes present in the Internet Routing Table: 14348
ARIN Prefixes per ASN: 7.84
ARIN Region origin ASes announcing only one prefix: 5477
ARIN Region transit ASes present in the Internet Routing Table: 1495
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: 799752704
Equivalent to 47 /8s, 171 /16s and 66 /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: 83979
Total RIPE prefixes after maximum aggregation: 47893
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 77165
Unique aggregates announced from the RIPE address blocks: 51036
RIPE Region origin ASes present in the Internet Routing Table: 15553
RIPE Prefixes per ASN: 4.96
RIPE Region origin ASes announcing only one prefix: 7819
RIPE Region transit ASes present in the Internet Routing Table: 2431
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: 757
Number of RIPE addresses announced to Internet: 467378176
Equivalent to 27 /8s, 219 /16s and 160 /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: 32551
Total LACNIC prefixes after maximum aggregation: 7435
LACNIC Deaggregation factor: 4.38
Prefixes being announced from the LACNIC address blocks: 31552
Unique aggregates announced from the LACNIC address blocks: 16500
LACNIC Region origin ASes present in the Internet Routing Table: 1441
LACNIC Prefixes per ASN: 21.90
LACNIC Region origin ASes announcing only one prefix: 428
LACNIC Region transit ASes present in the Internet Routing Table: 257
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: 200
Number of LACNIC addresses announced to Internet: 82659840
Equivalent to 4 /8s, 237 /16s and 74 /24s
Percentage of available LACNIC address space announced: 54.7
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: 7749
Total AfriNIC prefixes after maximum aggregation: 1839
AfriNIC Deaggregation factor: 4.21
Prefixes being announced from the AfriNIC address blocks: 6112
Unique aggregates announced from the AfriNIC address blocks: 1897
AfriNIC Region origin ASes present in the Internet Routing Table: 448
AfriNIC Prefixes per ASN: 13.64
AfriNIC Region origin ASes announcing only one prefix: 135
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: 23308544
Equivalent to 1 /8s, 99 /16s and 169 /24s
Percentage of available AfriNIC address space announced: 34.7
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 2433 9482 903 Korea Telecom (KIX)
17974 1826 515 29 PT TELEKOMUNIKASI INDONESIA
7545 1554 301 83 TPG Internet Pty Ltd
4755 1457 634 167 TATA Communications formerly
7552 1194 1064 7 Vietel Corporation
24560 1157 328 189 Bharti Airtel Ltd., Telemedia
9583 1055 77 493 Sify Limited
4808 1030 2089 293 CNCGROUP IP network: China169
9829 1007 870 50 BSNL National Internet Backbo
17488 944 165 100 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 3648 3822 256 bellsouth.net, inc.
4323 2629 1086 397 Time Warner Telecom
1785 1790 681 128 PaeTec Communications, Inc.
18566 1776 349 229 Covad Communications
6478 1648 310 46 AT&T Worldnet Services
20115 1535 1552 638 Charter Communications
19262 1495 4949 298 Verizon Global Networks
7018 1356 6799 886 AT&T WorldNet Services
22773 1300 2865 84 Cox Communications, Inc.
2386 1268 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 440 129 336 Akamai Technologies European
3320 423 7609 368 Deutsche Telekom AG
12479 408 577 6 Uni2 Autonomous System
8551 405 354 47 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 1444 268 160 TVCABLE BOGOTA
28573 1285 988 87 NET Servicos de Comunicao S.A
8151 1250 2688 370 UniNet S.A. de C.V.
7303 927 467 149 Telecom Argentina Stet-France
6503 903 354 72 AVANTEL, S.A.
14420 663 53 91 CORPORACION NACIONAL DE TELEC
22047 566 310 15 VTR PUNTO NET S.A.
3816 518 226 98 Empresa Nacional de Telecomun
11172 489 99 82 Servicios Alestra S.A de C.V
27947 481 53 52 Telconet S.A
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 879 445 11 TEDATA
24863 764 147 39 LINKdotNET AS number
15475 421 90 8 Nile Online
36992 300 415 13 Etisalat MISR
3741 267 985 227 The Internet Solution
6713 239 215 13 Itissalat Al-MAGHRIB
33776 227 13 5 Starcomms Nigeria Limited
24835 218 78 10 RAYA Telecom - Egypt
29571 161 17 11 Ci Telecom Autonomous system
16637 148 441 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 3648 3822 256 bellsouth.net, inc.
4323 2629 1086 397 Time Warner Telecom
4766 2433 9482 903 Korea Telecom (KIX)
23456 2284 653 1245 32-bit ASN transition
17974 1826 515 29 PT TELEKOMUNIKASI INDONESIA
1785 1790 681 128 PaeTec Communications, Inc.
18566 1776 349 229 Covad Communications
6478 1648 310 46 AT&T Worldnet Services
7545 1554 301 83 TPG Internet Pty Ltd
20115 1535 1552 638 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 2629 2232 Time Warner Telecom
17974 1826 1797 PT TELEKOMUNIKASI INDONESIA
1785 1790 1662 PaeTec Communications, Inc.
6478 1648 1602 AT&T Worldnet Services
18566 1776 1547 Covad Communications
4766 2433 1530 Korea Telecom (KIX)
7545 1554 1471 TPG Internet Pty Ltd
4755 1457 1290 TATA Communications formerly
10620 1444 1284 TVCABLE BOGOTA
11492 1259 1244 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
31.193.128.0/20 29550 PoundHost Internet Services.
41.222.79.0/24 36938 >>UNKNOWN<<
41.223.92.0/22 36936 >>UNKNOWN<<
45.127.0.0/16 13767 NetworkTwo Communications Gro
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 /12:221
/13:459 /14:788 /15:1386 /16:11673 /17:5749 /18:9641
/19:19183 /20:25596 /21:25653 /22:33821 /23:32650 /24:185729
/25:1112 /26:1281 /27:699 /28:39 /29:8 /30:2
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2249 3648 bellsouth.net, inc.
18566 1744 1776 Covad Communications
6478 1602 1648 AT&T Worldnet Services
10620 1334 1444 TVCABLE BOGOTA
4323 1331 2629 Time Warner Telecom
11492 1208 1259 Cable One
23456 1154 2284 32-bit ASN transition
7011 1062 1161 Citizens Utilities
1785 1059 1790 PaeTec Communications, Inc.
22773 844 1300 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:262 2:45 4:14 5:1 6:3 8:351
12:1981 13:1 14:443 15:15 16:3 17:8
20:9 23:5 24:1607 27:724 31:227 32:60
33:3 34:2 37:1 38:765 40:101 41:2453
42:5 44:3 46:881 47:4 49:177 50:372
52:13 55:5 56:2 57:32 58:844 59:481
60:387 61:1268 62:984 63:1921 64:3942 65:2323
66:4357 67:1866 68:1074 69:2963 70:701 71:346
72:1899 73:1 74:2357 75:297 76:336 77:837
78:680 79:452 80:1094 81:815 82:496 83:463
84:649 85:1079 86:565 87:740 88:333 89:1586
90:183 91:3707 92:507 93:1056 94:1262 95:789
96:474 97:251 98:826 99:35 101:66 103:5
106:1 107:5 108:84 109:942 110:556 111:690
112:320 113:394 114:517 115:685 116:954 117:682
118:804 119:1131 120:301 121:671 122:1625 123:1071
124:1248 125:1220 128:266 129:164 130:172 131:568
132:112 133:19 134:217 135:49 136:214 137:141
138:302 139:106 140:491 141:174 142:400 143:402
144:487 145:52 146:441 147:210 148:590 149:243
150:171 151:187 152:309 153:179 154:3 155:395
156:191 157:353 158:132 159:384 160:314 161:243
162:277 163:164 164:478 165:350 166:511 167:425
168:719 169:153 170:786 171:76 172:1 173:1510
174:530 175:361 177:80 178:853 180:819 181:15
182:436 183:202 184:258 185:1 186:1128 187:821
188:987 189:1016 190:4849 192:5788 193:4833 194:3470
195:2971 196:1207 197:16 198:3570 199:3916 200:5521
201:1497 202:8349 203:8455 204:4132 205:2318 206:2750
207:3025 208:3962 209:3487 210:2716 211:1385 212:1971
213:1701 214:739 215:67 216:4868 217:1651 218:562
219:374 220:1196 221:483 222:342 223:144
End of report
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