Routing Table Report 08:00 +10GMT Tue 29 Mar, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/london/
Analysis Summary
----------------
BGP routing table entries examined: 346611
Prefixes after maximum aggregation: 157617
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 173501
Total ASes present in the Internet Routing Table: 35996
Prefixes per ASN: 9.63
Origin-only ASes present in the Internet Routing Table: 31135
Origin ASes announcing only one prefix: 14983
Transit ASes present in the Internet Routing Table: 4861
Transit-only ASes present in the Internet Routing Table: 121
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 25
Max AS path prepend of ASN (32374) 19
Prefixes from unregistered ASNs in the Routing Table: 1905
Unregistered ASNs in the Routing Table: 333
Number of 32-bit ASNs allocated by the RIRs: 1239
Number of 32-bit ASNs visible in the Routing Table: 0
Prefixes from 32-bit ASNs in the Routing Table: 2017
Special use prefixes present in the Routing Table: 6
Prefixes being announced from unallocated address space: 188
Number of addresses announced to Internet: 2408118016
Equivalent to 143 /8s, 136 /16s and 247 /24s
Percentage of available address space announced: 65.0
Percentage of allocated address space announced: 65.0
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 89.8
Total number of prefixes smaller than registry allocations: 142012
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 83661
Total APNIC prefixes after maximum aggregation: 28535
APNIC Deaggregation factor: 2.93
Prefixes being announced from the APNIC address blocks: 81376
Unique aggregates announced from the APNIC address blocks: 36572
APNIC Region origin ASes present in the Internet Routing Table: 4319
APNIC Prefixes per ASN: 18.84
APNIC Region origin ASes announcing only one prefix: 1217
APNIC Region transit ASes present in the Internet Routing Table: 658
Average APNIC Region AS path length visible: 4.1
Max APNIC Region AS path length visible: 21
Number of APNIC region 32-bit ASNs visible in the Routing Table: 0
Number of APNIC addresses announced to Internet: 599965952
Equivalent to 35 /8s, 194 /16s and 193 /24s
Percentage of available APNIC address space announced: 76.1
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: 137378
Total ARIN prefixes after maximum aggregation: 70334
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 110160
Unique aggregates announced from the ARIN address blocks: 44912
ARIN Region origin ASes present in the Internet Routing Table: 14195
ARIN Prefixes per ASN: 7.76
ARIN Region origin ASes announcing only one prefix: 5415
ARIN Region transit ASes present in the Internet Routing Table: 1409
Average ARIN Region AS path length visible: 3.3
Max ARIN Region AS path length visible: 22
Number of ARIN region 32-bit ASNs visible in the Routing Table: 0
Number of ARIN addresses announced to Internet: 797256704
Equivalent to 47 /8s, 133 /16s and 44 /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: 83242
Total RIPE prefixes after maximum aggregation: 47365
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 76586
Unique aggregates announced from the RIPE address blocks: 50088
RIPE Region origin ASes present in the Internet Routing Table: 15440
RIPE Prefixes per ASN: 4.96
RIPE Region origin ASes announcing only one prefix: 7778
RIPE Region transit ASes present in the Internet Routing Table: 2386
Average RIPE Region AS path length visible: 3.5
Max RIPE Region AS path length visible: 25
Number of RIPE region 32-bit ASNs visible in the Routing Table: 0
Number of RIPE addresses announced to Internet: 465112576
Equivalent to 27 /8s, 185 /16s and 14 /24s
Percentage of available RIPE address space announced: 74.9
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: 32013
Total LACNIC prefixes after maximum aggregation: 7269
LACNIC Deaggregation factor: 4.40
Prefixes being announced from the LACNIC address blocks: 31081
Unique aggregates announced from the LACNIC address blocks: 16246
LACNIC Region origin ASes present in the Internet Routing Table: 1426
LACNIC Prefixes per ASN: 21.80
LACNIC Region origin ASes announcing only one prefix: 440
LACNIC Region transit ASes present in the Internet Routing Table: 249
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 18
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 0
Number of LACNIC addresses announced to Internet: 81489408
Equivalent to 4 /8s, 219 /16s and 110 /24s
Percentage of available LACNIC address space announced: 54.0
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: 7576
Total AfriNIC prefixes after maximum aggregation: 1815
AfriNIC Deaggregation factor: 4.17
Prefixes being announced from the AfriNIC address blocks: 5955
Unique aggregates announced from the AfriNIC address blocks: 1861
AfriNIC Region origin ASes present in the Internet Routing Table: 439
AfriNIC Prefixes per ASN: 13.56
AfriNIC Region origin ASes announcing only one prefix: 133
AfriNIC Region transit ASes present in the Internet Routing Table: 93
Average AfriNIC Region AS path length visible: 3.4
Max AfriNIC Region AS path length visible: 17
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 0
Number of AfriNIC addresses announced to Internet: 22655744
Equivalent to 1 /8s, 89 /16s and 179 /24s
Percentage of available AfriNIC address space announced: 33.8
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 1856 9501 593 Korea Telecom (KIX)
7545 1553 301 84 TPG Internet Pty Ltd
4755 1480 653 159 TATA Communications formerly
17974 1347 472 34 PT Telekomunikasi Indonesia
24560 1135 322 204 Bharti Airtel Ltd., Telemedia
9583 1056 77 495 Sify Limited
9829 1004 868 53 National Internet Backbone
4808 947 2034 278 CNCGROUP IP network China169
18101 935 116 139 Reliance Infocom Ltd Internet
17488 934 162 96 Hathway IP Over Cable Interne
Complete listing at http://thyme.rand.apnic.net/london/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6389 3673 3839 259 BellSouth.net Inc.
4323 2566 1109 402 tw telecom holdings, inc.
1785 1789 681 131 PaeTec Communications, Inc.
18566 1597 330 198 Covad Communications Co.
6478 1572 302 37 AT&T Services, Inc.
20115 1531 1541 648 Charter Communications
19262 1489 4935 303 Verizon Online LLC
7018 1375 6836 901 AT&T Services, Inc.
11492 1326 240 15 CABLE ONE, INC.
22773 1284 2865 80 Cox Communications Inc.
Complete listing at http://thyme.rand.apnic.net/london/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
9116 542 328 31 Goldenlines main autonomous s
6830 512 1780 316 UPC Broadband
3292 455 2013 392 TDC Data Networks
34984 455 95 205 BILISIM TELEKOM
8866 443 133 24 Bulgarian Telecommunication C
9198 422 267 15 Kazakhtelecom Data Network Ad
20940 415 98 322 Akamai Technologies European
3320 411 7604 358 Deutsche Telekom AG
8551 405 355 38 Bezeq International
702 398 1803 312 >>UNKNOWN<<
Complete listing at http://thyme.rand.apnic.net/london/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
10620 1403 262 152 Types of queries are: POCs, o
28573 1234 970 83 Types of queries are: POCs, o
8151 1226 2655 363 Uninet S.A. de C.V.
6503 1217 354 74 Axtel, S.A.B. de C.V.
7303 901 464 136 Telecom Argentina S.A.
14420 638 52 91 CORPORACION NACIONAL DE TELEC
22047 567 310 15 Types of queries are: POCs, o
3816 516 225 97 Types of queries are: POCs, o
13489 494 217 105 EPM Telecomunicaciones S.A. E
11172 485 99 80 Alestra, S. de R.L. de C.V.
Complete listing at http://thyme.rand.apnic.net/london/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8452 843 445 11 TEDATA
24863 771 147 37 LINKdotNET AS number
15475 429 90 8 Nile Online
36992 298 271 14 Etisalat MISR
3741 265 985 227 The Internet Solution
24835 232 78 10 RAYA Telecom - Egypt
33776 230 13 5 Starcomms Nigeria Limited
6713 214 199 11 Itissalat Al-MAGHRIB
29571 192 17 11 Ci Telecom Autonomous system
16637 147 441 86 MTN Network Solutions
Complete listing at http://thyme.rand.apnic.net/london/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
6389 3673 3839 259 BellSouth.net Inc.
4323 2566 1109 402 tw telecom holdings, inc.
23456 2017 494 1100 32-bit ASN transition
4766 1856 9501 593 Korea Telecom (KIX)
1785 1789 681 131 PaeTec Communications, Inc.
18566 1597 330 198 Covad Communications Co.
6478 1572 302 37 AT&T Services, Inc.
7545 1553 301 84 TPG Internet Pty Ltd
20115 1531 1541 648 Charter Communications
19262 1489 4935 303 Verizon Online LLC
Complete listing at http://thyme.rand.apnic.net/london/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 2566 2164 tw telecom holdings, inc.
1785 1789 1658 PaeTec Communications, Inc.
6478 1572 1535 AT&T Services, Inc.
7545 1553 1469 TPG Internet Pty Ltd
18566 1597 1399 Covad Communications Co.
4755 1480 1321 TATA Communications formerly
17974 1347 1313 PT Telekomunikasi Indonesia
11492 1326 1311 CABLE ONE, INC.
4766 1856 1263 Korea Telecom (KIX)
10620 1403 1251 Types of queries are: POCs, o
Complete listing at http://thyme.rand.apnic.net/london/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
65333 PRIVATE 10.0.0.0/8 0 *
32805 UNALLOCATED 12.1.225.0/24 7018 AT&T Services, Inc.
15132 UNALLOCATED 12.9.150.0/24 7018 AT&T Services, Inc.
32567 UNALLOCATED 12.14.170.0/24 7018 AT&T Services, Inc.
16504 UNALLOCATED 12.18.155.0/24 30170 Optic Fusion
13746 UNALLOCATED 12.24.56.0/24 7018 AT&T Services, Inc.
32567 UNALLOCATED 12.25.107.0/24 4323 tw telecom holdings,
30031 UNALLOCATED 12.27.122.0/24 7018 AT&T Services, Inc.
26095 UNALLOCATED 12.34.8.0/24 7018 AT&T Services, Inc.
21861 UNALLOCATED 12.37.59.0/24 7018 AT&T Services, Inc.
Complete listing at http://thyme.rand.apnic.net/london/data-badAS
Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------
Prefix Origin AS Description
10.0.0.0/8 65333 Internet Assigned Numbers Aut
169.254.0.0/16 65333 Internet Assigned Numbers Aut
172.16.0.0/12 65333 Internet Assigned Numbers Aut
192.0.2.0/24 65333 Internet Assigned Numbers Aut
192.168.0.0/16 65535 Internet Assigned Numbers Aut
198.18.0.0/15 65333 Internet Assigned Numbers Aut
Complete listing at http://thyme.rand.apnic.net/london/data-dsua
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
2.56.0.0/16 44559 E-Rent LLC
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
31.22.80.0/21 8455 ATOM86 Autonomous System
41.57.192.0/18 22750 BCSNET
41.222.79.0/24 36938 >>UNKNOWN<<
Complete listing at http://thyme.rand.apnic.net/london/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 /9:11 /10:26 /11:74 /12:218
/13:447 /14:764 /15:1372 /16:11546 /17:5666 /18:9401
/19:19176 /20:24812 /21:25152 /22:33456 /23:31921 /24:182085
/25:11 /26:17 /27:24 /28:154 /29:98 /30:51
/31:0 /32:109
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2266 3673 BellSouth.net Inc.
18566 1576 1597 Covad Communications Co.
6478 1526 1572 AT&T Services, Inc.
4323 1375 2566 tw telecom holdings, inc.
10620 1293 1403 Types of queries are: POCs, o
11492 1274 1326 CABLE ONE, INC.
23456 1087 2017 32-bit ASN transition
7011 1063 1164 Frontier Communications of Am
1785 1056 1789 PaeTec Communications, Inc.
6503 993 1217 Axtel, S.A.B. de C.V.
Complete listing at http://thyme.rand.apnic.net/london/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:293 2:55 4:14 5:1 8:347 12:2018
13:1 14:411 15:15 16:3 17:8 20:9
23:3 24:1571 27:698 31:21 32:56 33:3
34:2 37:1 38:744 39:1 40:101 41:2363
44:3 46:770 47:4 49:142 50:123 52:13
55:5 56:2 57:27 58:767 59:494 60:385
61:1065 62:1006 63:1912 64:3845 65:2355 66:4355
67:1806 68:1061 69:2927 70:696 71:343 72:1897
73:1 74:2326 75:283 76:338 77:850 78:697
79:453 80:1095 81:822 82:515 83:466 84:648
85:1031 86:552 87:768 88:343 89:1560 90:175
91:3646 92:509 93:1044 94:1229 95:780 96:451
97:252 98:810 99:35 101:41 106:1 107:4
108:48 109:926 110:516 111:672 112:313 113:385
114:491 115:712 116:946 117:653 118:742 119:1079
120:280 121:730 122:1606 123:1043 124:1305 125:1251
128:213 129:168 130:167 131:562 132:101 133:20
134:208 135:49 136:210 137:139 138:299 139:103
140:463 141:173 142:364 143:389 144:478 145:52
146:435 147:190 148:616 149:260 150:159 151:187
152:297 153:180 154:2 155:382 156:181 157:319
158:131 159:372 160:316 161:199 162:276 163:155
164:493 165:348 166:501 167:411 168:717 169:153
170:778 171:70 172:2 173:1255 174:532 175:338
177:74 178:758 180:779 181:4 182:399 183:192
184:232 185:1 186:1109 187:899 188:920 189:1033
190:4742 192:5717 193:4791 194:3481 195:2927 196:1204
197:15 198:3534 199:3852 200:5556 201:1585 202:8175
203:8350 204:4038 205:2294 206:2537 207:2954 208:3901
209:3468 210:2648 211:1354 212:1962 213:1709 214:760
215:66 216:4858 217:1651 218:546 219:379 220:1186
221:460 222:307 223:100
End of report
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