Routing Table Report 08:00 +10GMT Fri 18 Mar, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/london/
Analysis Summary
----------------
BGP routing table entries examined: 345386
Prefixes after maximum aggregation: 157180
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 173029
Total ASes present in the Internet Routing Table: 35946
Prefixes per ASN: 9.61
Origin-only ASes present in the Internet Routing Table: 31110
Origin ASes announcing only one prefix: 14984
Transit ASes present in the Internet Routing Table: 4836
Transit-only ASes present in the Internet Routing Table: 111
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 25
Max AS path prepend of ASN (42805) 21
Prefixes from unregistered ASNs in the Routing Table: 1355
Unregistered ASNs in the Routing Table: 312
Number of 32-bit ASNs allocated by the RIRs: 1204
Prefixes from 32-bit ASNs in the Routing Table: 1882
Special use prefixes present in the Routing Table: 6
Prefixes being announced from unallocated address space: 194
Number of addresses announced to Internet: 2401957632
Equivalent to 143 /8s, 42 /16s and 247 /24s
Percentage of available address space announced: 64.8
Percentage of allocated address space announced: 64.8
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 89.4
Total number of prefixes smaller than registry allocations: 141474
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 83389
Total APNIC prefixes after maximum aggregation: 28339
APNIC Deaggregation factor: 2.94
Prefixes being announced from the APNIC address blocks: 81038
Unique aggregates announced from the APNIC address blocks: 36265
APNIC Region origin ASes present in the Internet Routing Table: 4302
APNIC Prefixes per ASN: 18.84
APNIC Region origin ASes announcing only one prefix: 1222
APNIC Region transit ASes present in the Internet Routing Table: 651
Average APNIC Region AS path length visible: 4.2
Max APNIC Region AS path length visible: 19
Number of APNIC addresses announced to Internet: 595550464
Equivalent to 35 /8s, 127 /16s and 97 /24s
Percentage of available APNIC address space announced: 75.5
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: 137069
Total ARIN prefixes after maximum aggregation: 70309
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 109867
Unique aggregates announced from the ARIN address blocks: 45044
ARIN Region origin ASes present in the Internet Routing Table: 14188
ARIN Prefixes per ASN: 7.74
ARIN Region origin ASes announcing only one prefix: 5410
ARIN Region transit ASes present in the Internet Routing Table: 1398
Average ARIN Region AS path length visible: 3.3
Max ARIN Region AS path length visible: 22
Number of ARIN addresses announced to Internet: 796805376
Equivalent to 47 /8s, 126 /16s and 73 /24s
Percentage of available ARIN address space announced: 63.3
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: 83181
Total RIPE prefixes after maximum aggregation: 47219
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 76539
Unique aggregates announced from the RIPE address blocks: 49970
RIPE Region origin ASes present in the Internet Routing Table: 15429
RIPE Prefixes per ASN: 4.96
RIPE Region origin ASes announcing only one prefix: 7786
RIPE Region transit ASes present in the Internet Routing Table: 2392
Average RIPE Region AS path length visible: 3.5
Max RIPE Region AS path length visible: 25
Number of RIPE addresses announced to Internet: 464871936
Equivalent to 27 /8s, 181 /16s and 98 /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: 31719
Total LACNIC prefixes after maximum aggregation: 7274
LACNIC Deaggregation factor: 4.36
Prefixes being announced from the LACNIC address blocks: 30772
Unique aggregates announced from the LACNIC address blocks: 16136
LACNIC Region origin ASes present in the Internet Routing Table: 1426
LACNIC Prefixes per ASN: 21.58
LACNIC Region origin ASes announcing only one prefix: 439
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 addresses announced to Internet: 81468416
Equivalent to 4 /8s, 219 /16s and 28 /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: 7475
Total AfriNIC prefixes after maximum aggregation: 1803
AfriNIC Deaggregation factor: 4.15
Prefixes being announced from the AfriNIC address blocks: 5864
Unique aggregates announced from the AfriNIC address blocks: 1803
AfriNIC Region origin ASes present in the Internet Routing Table: 432
AfriNIC Prefixes per ASN: 13.57
AfriNIC Region origin ASes announcing only one prefix: 127
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 addresses announced to Internet: 22070528
Equivalent to 1 /8s, 80 /16s and 197 /24s
Percentage of available AfriNIC address space announced: 32.9
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 1867 9500 591 Korea Telecom (KIX)
7545 1549 301 83 TPG Internet Pty Ltd
4755 1480 653 159 TATA Communications formerly
17974 1432 472 35 PT Telekomunikasi Indonesia
24560 1133 324 186 Bharti Airtel Ltd., Telemedia
9583 1046 77 493 Sify Limited
9829 1004 868 53 National Internet Backbone
18101 936 117 140 Reliance Infocom Ltd Internet
17488 935 162 96 Hathway IP Over Cable Interne
4808 932 2031 270 CNCGROUP IP network China169
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 3678 3839 260 BellSouth.net Inc.
4323 2582 1109 403 tw telecom holdings, inc.
1785 1791 681 127 PaeTec Communications, Inc.
18566 1597 330 197 Covad Communications Co.
6478 1547 299 72 AT&T Services, Inc.
20115 1527 1536 645 Charter Communications
19262 1488 4939 299 Verizon Online LLC
7018 1382 6868 901 AT&T Services, Inc.
11492 1319 237 64 CABLE ONE, INC.
2386 1291 537 930 AT&T Data Communications Serv
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 513 1780 317 UPC Broadband
9198 470 267 15 Kazakhtelecom Data Network Ad
3292 453 2013 391 TDC Data Networks
34984 452 95 201 BILISIM TELEKOM
8866 444 133 24 Bulgarian Telecommunication C
20940 415 98 319 Akamai Technologies European
3320 407 7604 353 Deutsche Telekom AG
8551 405 355 38 Bezeq International
12479 403 577 6 France Telecom Espana SA
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 1392 259 163 Types of queries are: POCs, o
8151 1227 2685 363 Uninet S.A. de C.V.
28573 1213 965 82 Types of queries are: POCs, o
6503 1176 354 74 Axtel, S.A.B. de C.V.
7303 895 463 133 Telecom Argentina S.A.
14420 639 52 91 CORPORACION NACIONAL DE TELEC
22047 543 310 15 Types of queries are: POCs, o
3816 515 225 96 Types of queries are: POCs, o
13489 491 213 103 EPM Telecomunicaciones S.A. E
11172 485 99 81 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 789 445 11 TEDATA
24863 770 147 37 LINKdotNET AS number
15475 428 90 8 Nile Online
36992 297 271 14 Etisalat MISR
3741 265 971 227 The Internet Solution
24835 232 78 10 RAYA Telecom - Egypt
33776 230 13 5 Starcomms Nigeria Limited
6713 204 199 11 Itissalat Al-MAGHRIB
29571 192 17 11 Ci Telecom Autonomous system
16637 146 439 87 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 3678 3839 260 BellSouth.net Inc.
4323 2582 1109 403 tw telecom holdings, inc.
23456 1882 478 1067 32-bit ASN transition
4766 1867 9500 591 Korea Telecom (KIX)
1785 1791 681 127 PaeTec Communications, Inc.
18566 1597 330 197 Covad Communications Co.
7545 1549 301 83 TPG Internet Pty Ltd
6478 1547 299 72 AT&T Services, Inc.
20115 1527 1536 645 Charter Communications
19262 1488 4939 299 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 2582 2179 tw telecom holdings, inc.
1785 1791 1664 PaeTec Communications, Inc.
6478 1547 1475 AT&T Services, Inc.
7545 1549 1466 TPG Internet Pty Ltd
18566 1597 1400 Covad Communications Co.
17974 1432 1397 PT Telekomunikasi Indonesia
4755 1480 1321 TATA Communications formerly
4766 1867 1276 Korea Telecom (KIX)
11492 1319 1255 CABLE ONE, INC.
10620 1392 1229 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 0 *
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
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
31.31.24.0/21 1547 US DOD NIC Unregistered
31.185.104.0/21 8881 KomTel routing policies
39.1.1.0/24 17379 Intelig Telecomunica Ltda
41.57.192.0/18 22750 BCSNET
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 /11:73 /12:217
/13:446 /14:762 /15:1369 /16:11524 /17:5649 /18:9365
/19:19085 /20:24732 /21:25193 /22:33417 /23:31834 /24:181211
/25:11 /26:17 /27:24 /28:152 /29:94 /30:48
/31:0 /32:106
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2268 3678 BellSouth.net Inc.
18566 1576 1597 Covad Communications Co.
6478 1501 1547 AT&T Services, Inc.
4323 1391 2582 tw telecom holdings, inc.
10620 1283 1392 Types of queries are: POCs, o
11492 1276 1319 CABLE ONE, INC.
23456 1073 1882 32-bit ASN transition
7011 1062 1162 Frontier Communications of Am
1785 1057 1791 PaeTec Communications, Inc.
6503 954 1176 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)
----------------------------------------------
1:274 2:61 4:14 5:1 8:341 12:2025
13:1 14:396 15:15 16:3 17:8 20:10
23:3 24:1557 27:633 31:2 32:56 33:3
34:2 37:1 38:712 39:2 40:101 41:2275
44:3 46:731 47:4 49:158 50:106 52:13
55:3 56:2 57:29 58:762 59:491 60:385
61:1047 62:998 63:1919 64:3844 65:2350 66:4366
67:1775 68:1075 69:2906 70:697 71:359 72:1936
73:1 74:2323 75:284 76:344 77:845 78:698
79:457 80:1092 81:818 82:517 83:468 84:644
85:1043 86:554 87:771 88:353 89:1565 90:174
91:3638 92:500 93:1045 94:1231 95:779 96:443
97:251 98:795 99:34 101:45 106:1 107:4
108:72 109:905 110:480 111:708 112:309 113:375
114:483 115:705 116:942 117:654 118:711 119:1053
120:253 121:744 122:1583 123:1034 124:1285 125:1260
128:213 129:164 130:166 131:556 132:100 133:20
134:209 135:49 136:210 137:142 138:299 139:104
140:462 141:173 142:360 143:382 144:469 145:52
146:432 147:208 148:605 149:274 150:153 151:187
152:296 153:180 154:2 155:375 156:181 157:318
158:127 159:364 160:313 161:203 162:277 163:154
164:490 165:349 166:500 167:411 168:717 169:155
170:747 171:69 172:2 173:1249 174:518 175:333
177:34 178:805 180:775 181:4 182:381 183:245
184:228 185:1 186:1052 187:860 188:920 189:1031
190:4703 192:5717 193:4787 194:3495 195:2934 196:1186
197:15 198:3492 199:3838 200:5493 201:1581 202:8139
203:8363 204:4035 205:2282 206:2543 207:2951 208:3898
209:3453 210:2637 211:1343 212:1961 213:1693 214:756
215:66 216:4846 217:1647 218:546 219:372 220:1191
221:453 222:316 223:96
End of report
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