Routing Table Report 04:00 +10GMT Tue 19 Apr, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 354760
Prefixes after maximum aggregation: 160481
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 175014
Total ASes present in the Internet Routing Table: 37338
Prefixes per ASN: 9.50
Origin-only ASes present in the Internet Routing Table: 31304
Origin ASes announcing only one prefix: 15057
Transit ASes present in the Internet Routing Table: 5028
Transit-only ASes present in the Internet Routing Table: 128
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: 599
Unregistered ASNs in the Routing Table: 266
Number of 32-bit ASNs allocated by the RIRs: 1303
Number of 32-bit ASNs visible in the Routing Table: 1006
Prefixes from 32-bit ASNs in the Routing Table: 2200
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 148
Number of addresses announced to Internet: 2413215168
Equivalent to 143 /8s, 214 /16s and 189 /24s
Percentage of available address space announced: 65.1
Percentage of allocated address space announced: 65.1
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.5
Total number of prefixes smaller than registry allocations: 147059
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 88341
Total APNIC prefixes after maximum aggregation: 29887
APNIC Deaggregation factor: 2.96
Prefixes being announced from the APNIC address blocks: 85350
Unique aggregates announced from the APNIC address blocks: 36827
APNIC Region origin ASes present in the Internet Routing Table: 4410
APNIC Prefixes per ASN: 19.35
APNIC Region origin ASes announcing only one prefix: 1225
APNIC Region transit ASes present in the Internet Routing Table: 696
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: 48
Number of APNIC addresses announced to Internet: 610170400
Equivalent to 36 /8s, 94 /16s and 118 /24s
Percentage of available APNIC address space announced: 77.4
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: 139813
Total ARIN prefixes after maximum aggregation: 71051
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 112272
Unique aggregates announced from the ARIN address blocks: 45096
ARIN Region origin ASes present in the Internet Routing Table: 14327
ARIN Prefixes per ASN: 7.84
ARIN Region origin ASes announcing only one prefix: 5472
ARIN Region transit ASes present in the Internet Routing Table: 1487
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: 797932288
Equivalent to 47 /8s, 143 /16s and 123 /24s
Percentage of available ARIN address space announced: 63.4
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: 83999
Total RIPE prefixes after maximum aggregation: 47775
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 77097
Unique aggregates announced from the RIPE address blocks: 50810
RIPE Region origin ASes present in the Internet Routing Table: 15527
RIPE Prefixes per ASN: 4.97
RIPE Region origin ASes announcing only one prefix: 7797
RIPE Region transit ASes present in the Internet Routing Table: 2428
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: 744
Number of RIPE addresses announced to Internet: 466279808
Equivalent to 27 /8s, 202 /16s and 221 /24s
Percentage of available RIPE address space announced: 75.1
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: 32446
Total LACNIC prefixes after maximum aggregation: 7426
LACNIC Deaggregation factor: 4.37
Prefixes being announced from the LACNIC address blocks: 31408
Unique aggregates announced from the LACNIC address blocks: 16411
LACNIC Region origin ASes present in the Internet Routing Table: 1440
LACNIC Prefixes per ASN: 21.81
LACNIC Region origin ASes announcing only one prefix: 430
LACNIC Region transit ASes present in the Internet Routing Table: 262
Average LACNIC Region AS path length visible: 4.4
Max LACNIC Region AS path length visible: 17
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 198
Number of LACNIC addresses announced to Internet: 82252672
Equivalent to 4 /8s, 231 /16s and 19 /24s
Percentage of available LACNIC address space announced: 54.5
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: 7679
Total AfriNIC prefixes after maximum aggregation: 1826
AfriNIC Deaggregation factor: 4.21
Prefixes being announced from the AfriNIC address blocks: 6051
Unique aggregates announced from the AfriNIC address blocks: 1876
AfriNIC Region origin ASes present in the Internet Routing Table: 446
AfriNIC Prefixes per ASN: 13.57
AfriNIC Region origin ASes announcing only one prefix: 133
AfriNIC Region transit ASes present in the Internet Routing Table: 98
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: 23280896
Equivalent to 1 /8s, 99 /16s and 61 /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 2434 9484 903 Korea Telecom (KIX)
17974 1813 515 29 PT TELEKOMUNIKASI INDONESIA
7545 1545 301 82 TPG Internet Pty Ltd
4755 1445 638 167 TATA Communications formerly
24560 1138 322 203 Bharti Airtel Ltd., Telemedia
9583 1055 77 496 Sify Limited
4808 1032 2102 293 CNCGROUP IP network: China169
9829 1008 870 50 BSNL National Internet Backbo
17488 942 164 98 Hathway IP Over Cable Interne
18101 934 116 139 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 3662 3822 255 bellsouth.net, inc.
4323 2648 1090 396 Time Warner Telecom
1785 1788 681 128 PaeTec Communications, Inc.
18566 1760 349 229 Covad Communications
6478 1624 307 35 AT&T Worldnet Services
20115 1534 1550 639 Charter Communications
19262 1495 4949 298 Verizon Global Networks
7018 1353 6801 881 AT&T WorldNet Services
22773 1299 2865 84 Cox Communications, Inc.
2386 1269 536 911 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 519 1780 321 UPC Distribution Services
34984 508 106 182 BILISIM TELEKOM
29049 465 33 37 AzerSat LLC.
3292 455 1997 391 TDC Tele Danmark
8866 446 134 26 Bulgarian Telecommunication C
20940 436 126 335 Akamai Technologies European
3320 418 7607 364 Deutsche Telekom AG
12479 407 577 6 Uni2 Autonomous System
8551 403 353 46 Bezeq International
702 397 1802 310 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 1427 265 157 TVCABLE BOGOTA
28573 1279 972 86 NET Servicos de Comunicao S.A
8151 1248 2686 375 UniNet S.A. de C.V.
7303 928 467 148 Telecom Argentina Stet-France
6503 895 354 64 AVANTEL, S.A.
14420 663 53 91 CORPORACION NACIONAL DE TELEC
22047 568 310 15 VTR PUNTO NET S.A.
3816 516 225 98 Empresa Nacional de Telecomun
11172 487 99 81 Servicios Alestra S.A de C.V
27947 480 53 53 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 838 445 11 TEDATA
24863 778 147 39 LINKdotNET AS number
15475 423 90 8 Nile Online
36992 297 415 13 Etisalat MISR
3741 267 985 227 The Internet Solution
6713 235 215 13 Itissalat Al-MAGHRIB
33776 227 13 5 Starcomms Nigeria Limited
24835 219 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 3662 3822 255 bellsouth.net, inc.
4323 2648 1090 396 Time Warner Telecom
4766 2434 9484 903 Korea Telecom (KIX)
23456 2200 647 1210 32-bit ASN transition
17974 1813 515 29 PT TELEKOMUNIKASI INDONESIA
1785 1788 681 128 PaeTec Communications, Inc.
18566 1760 349 229 Covad Communications
6478 1624 307 35 AT&T Worldnet Services
7545 1545 301 82 TPG Internet Pty Ltd
20115 1534 1550 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 2648 2252 Time Warner Telecom
17974 1813 1784 PT TELEKOMUNIKASI INDONESIA
1785 1788 1660 PaeTec Communications, Inc.
6478 1624 1589 AT&T Worldnet Services
4766 2434 1531 Korea Telecom (KIX)
18566 1760 1531 Covad Communications
7545 1545 1463 TPG Internet Pty Ltd
4755 1445 1278 TATA Communications formerly
10620 1427 1270 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
45083 UNALLOCATED 1.45.0.0/16 4808 CNCGROUP IP network:
45083 UNALLOCATED 1.45.92.0/22 4808 CNCGROUP IP network:
15132 UNALLOCATED 12.9.150.0/24 7018 AT&T WorldNet Servic
32567 UNALLOCATED 12.14.170.0/24 4323 Time Warner Telecom
13746 UNALLOCATED 12.24.56.0/24 7018 AT&T WorldNet Servic
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
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
31.12.96.0/19 29550 PoundHost Internet Services.
31.13.0.0/21 29550 PoundHost Internet Services.
41.222.79.0/24 36938 >>UNKNOWN<<
41.223.92.0/22 36936 >>UNKNOWN<<
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 /12:219
/13:453 /14:776 /15:1376 /16:11609 /17:5745 /18:9481
/19:19161 /20:25193 /21:25610 /22:33724 /23:32606 /24:185509
/25:1125 /26:1279 /27:701 /28:40 /29:8 /30:2
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2259 3662 bellsouth.net, inc.
18566 1728 1760 Covad Communications
6478 1578 1624 AT&T Worldnet Services
4323 1344 2648 Time Warner Telecom
10620 1317 1427 TVCABLE BOGOTA
11492 1212 1263 Cable One
23456 1126 2200 32-bit ASN transition
7011 1062 1161 Citizens Utilities
1785 1058 1788 PaeTec Communications, Inc.
22773 843 1299 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:255 2:53 4:14 5:1 8:347 12:2012
13:1 14:435 15:15 16:3 17:8 20:9
23:5 24:1604 27:688 31:221 32:60 33:2
34:2 37:1 38:764 40:101 41:2378 42:1
44:3 46:855 47:4 49:173 50:358 52:13
55:5 56:2 57:31 58:844 59:485 60:387
61:1270 62:1008 63:1922 64:3924 65:2325 66:4347
67:1821 68:1081 69:2956 70:700 71:345 72:1906
73:1 74:2340 75:298 76:337 77:833 78:690
79:462 80:1105 81:828 82:504 83:454 84:648
85:1077 86:559 87:758 88:331 89:1586 90:181
91:3708 92:513 93:1060 94:1253 95:783 96:455
97:250 98:819 99:35 101:62 103:1 106:1
107:4 108:84 109:952 110:547 111:690 112:325
113:389 114:522 115:688 116:943 117:674 118:806
119:1138 120:290 121:705 122:1636 123:1064 124:1250
125:1268 128:264 129:163 130:172 131:566 132:113
133:20 134:218 135:49 136:214 137:142 138:301
139:103 140:487 141:174 142:398 143:391 144:485
145:53 146:440 147:204 148:588 149:243 150:170
151:187 152:307 153:180 154:3 155:394 156:191
157:355 158:132 159:382 160:316 161:243 162:277
163:164 164:486 165:350 166:512 167:427 168:725
169:154 170:783 171:75 172:1 173:1493 174:530
175:359 177:72 178:853 180:819 181:7 182:426
183:197 184:252 185:1 186:1135 187:801 188:990
189:996 190:4841 192:5783 193:4824 194:3467 195:2963
196:1200 197:16 198:3567 199:3918 200:5531 201:1494
202:8346 203:8465 204:4127 205:2324 206:2733 207:3027
208:3956 209:3502 210:2732 211:1366 212:1985 213:1719
214:750 215:67 216:4862 217:1658 218:556 219:394
220:1196 221:476 222:341 223:138
End of report
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