Routing Table Report 08:00 +10GMT Fri 25 Mar, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/london/
Analysis Summary
----------------
BGP routing table entries examined: 346479
Prefixes after maximum aggregation: 157495
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 173347
Total ASes present in the Internet Routing Table: 35977
Prefixes per ASN: 9.63
Origin-only ASes present in the Internet Routing Table: 31137
Origin ASes announcing only one prefix: 14989
Transit ASes present in the Internet Routing Table: 4840
Transit-only ASes present in the Internet Routing Table: 109
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: 1846
Unregistered ASNs in the Routing Table: 326
Number of 32-bit ASNs allocated by the RIRs: 1228
Number of 32-bit ASNs visible in the Routing Table: 0
Prefixes from 32-bit ASNs in the Routing Table: 1995
Special use prefixes present in the Routing Table: 6
Prefixes being announced from unallocated address space: 4733
Number of addresses announced to Internet: 2407329536
Equivalent to 143 /8s, 124 /16s and 239 /24s
Percentage of available address space announced: 64.9
Percentage of allocated address space announced: 64.9
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 87.8
Total number of prefixes smaller than registry allocations: 141859
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 83667
Total APNIC prefixes after maximum aggregation: 28450
APNIC Deaggregation factor: 2.94
Prefixes being announced from the APNIC address blocks: 76853
Unique aggregates announced from the APNIC address blocks: 35162
APNIC Region origin ASes present in the Internet Routing Table: 4311
APNIC Prefixes per ASN: 17.83
APNIC Region origin ASes announcing only one prefix: 1221
APNIC Region transit ASes present in the Internet Routing Table: 655
Average APNIC Region AS path length visible: 4.1
Max APNIC Region AS path length visible: 19
Number of APNIC region 32-bit ASNs visible in the Routing Table: 0
Number of APNIC addresses announced to Internet: 541498880
Equivalent to 32 /8s, 70 /16s and 158 /24s
Percentage of available APNIC address space announced: 68.7
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: 137367
Total ARIN prefixes after maximum aggregation: 70318
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 110104
Unique aggregates announced from the ARIN address blocks: 44832
ARIN Region origin ASes present in the Internet Routing Table: 14201
ARIN Prefixes per ASN: 7.75
ARIN Region origin ASes announcing only one prefix: 5424
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 region 32-bit ASNs visible in the Routing Table: 0
Number of ARIN addresses announced to Internet: 797025792
Equivalent to 47 /8s, 129 /16s and 166 /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: 83216
Total RIPE prefixes after maximum aggregation: 47349
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 76565
Unique aggregates announced from the RIPE address blocks: 50099
RIPE Region origin ASes present in the Internet Routing Table: 15436
RIPE Prefixes per ASN: 4.96
RIPE Region origin ASes announcing only one prefix: 7770
RIPE Region transit ASes present in the Internet Routing Table: 2385
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: 465156864
Equivalent to 27 /8s, 185 /16s and 187 /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: 31936
Total LACNIC prefixes after maximum aggregation: 7291
LACNIC Deaggregation factor: 4.38
Prefixes being announced from the LACNIC address blocks: 30998
Unique aggregates announced from the LACNIC address blocks: 16220
LACNIC Region origin ASes present in the Internet Routing Table: 1427
LACNIC Prefixes per ASN: 21.72
LACNIC Region origin ASes announcing only one prefix: 443
LACNIC Region transit ASes present in the Internet Routing Table: 250
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: 81394944
Equivalent to 4 /8s, 217 /16s and 253 /24s
Percentage of available LACNIC address space announced: 53.9
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: 7617
Total AfriNIC prefixes after maximum aggregation: 1811
AfriNIC Deaggregation factor: 4.21
Prefixes being announced from the AfriNIC address blocks: 5983
Unique aggregates announced from the AfriNIC address blocks: 1848
AfriNIC Region origin ASes present in the Internet Routing Table: 437
AfriNIC Prefixes per ASN: 13.69
AfriNIC Region origin ASes announcing only one prefix: 131
AfriNIC Region transit ASes present in the Internet Routing Table: 95
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: 22659328
Equivalent to 1 /8s, 89 /16s and 193 /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 1851 9501 592 Korea Telecom (KIX)
7545 1550 301 83 TPG Internet Pty Ltd
4755 1481 653 158 TATA Communications formerly
17974 1450 472 35 PT Telekomunikasi Indonesia
24560 1130 321 203 Bharti Airtel Ltd., Telemedia
9583 1054 77 492 Sify Limited
9829 1004 868 53 National Internet Backbone
4808 946 2033 277 CNCGROUP IP network China169
18101 935 116 139 Reliance Infocom Ltd Internet
17488 933 162 98 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 3675 3838 258 BellSouth.net Inc.
4323 2565 1109 402 tw telecom holdings, inc.
1785 1794 681 131 PaeTec Communications, Inc.
18566 1597 330 198 Covad Communications Co.
6478 1566 302 34 AT&T Services, Inc.
20115 1530 1540 650 Charter Communications
19262 1487 4935 303 Verizon Online LLC
7018 1371 6836 900 AT&T Services, Inc.
11492 1323 240 15 CABLE ONE, INC.
22773 1286 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 513 1780 317 UPC Broadband
3292 454 2013 391 TDC Data Networks
34984 454 95 205 BILISIM TELEKOM
8866 443 133 24 Bulgarian Telecommunication C
9198 422 267 15 Kazakhtelecom Data Network Ad
20940 417 100 322 Akamai Technologies European
3320 408 7604 355 Deutsche Telekom AG
8551 404 355 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 1393 260 159 Types of queries are: POCs, o
28573 1235 970 83 Types of queries are: POCs, o
8151 1227 2655 365 Uninet S.A. de C.V.
6503 1208 354 74 Axtel, S.A.B. de C.V.
7303 900 464 136 Telecom Argentina S.A.
14420 638 52 91 CORPORACION NACIONAL DE TELEC
22047 558 310 15 Types of queries are: POCs, o
3816 515 225 97 Types of queries are: POCs, o
13489 491 213 109 EPM Telecomunicaciones S.A. E
11172 486 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 840 445 11 TEDATA
24863 768 147 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 213 199 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 3675 3838 258 BellSouth.net Inc.
4323 2565 1109 402 tw telecom holdings, inc.
23456 1995 489 1089 32-bit ASN transition
4766 1851 9501 592 Korea Telecom (KIX)
1785 1794 681 131 PaeTec Communications, Inc.
18566 1597 330 198 Covad Communications Co.
6478 1566 302 34 AT&T Services, Inc.
7545 1550 301 83 TPG Internet Pty Ltd
20115 1530 1540 650 Charter Communications
19262 1487 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 2565 2163 tw telecom holdings, inc.
1785 1794 1663 PaeTec Communications, Inc.
6478 1566 1532 AT&T Services, Inc.
7545 1550 1467 TPG Internet Pty Ltd
17974 1450 1415 PT Telekomunikasi Indonesia
18566 1597 1399 Covad Communications Co.
4755 1481 1323 TATA Communications formerly
11492 1323 1308 CABLE ONE, INC.
4766 1851 1259 Korea Telecom (KIX)
10620 1393 1234 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
24.142.192.0/18 11426 Road Runner HoldCo 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
31.47.232.0/21 34549 Laxin IT-Services GmbH & Co.
31.186.32.0/21 48142 Permanet Ltd
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 /15:1369 /16:11542 /17:5661 /18:9392
/19:19172 /20:24727 /21:25124 /22:33516 /23:31910 /24:182037
/25:11 /26:17 /27:24 /28:158 /29:97 /30:51
/31:0 /32:111
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2268 3675 BellSouth.net Inc.
18566 1576 1597 Covad Communications Co.
6478 1520 1566 AT&T Services, Inc.
4323 1375 2565 tw telecom holdings, inc.
10620 1284 1393 Types of queries are: POCs, o
11492 1271 1323 CABLE ONE, INC.
23456 1081 1995 32-bit ASN transition
7011 1063 1164 Frontier Communications of Am
1785 1056 1794 PaeTec Communications, Inc.
6503 984 1208 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)
----------------------------------------------
1:288 2:55 4:14 5:1 8:347 12:2022
13:1 14:412 15:15 16:3 17:8 20:9
23:3 24:1567 27:683 31:6 32:56 33:3
34:2 37:1 38:745 39:1 40:101 41:2366
44:3 46:749 47:4 49:142 50:113 52:13
55:4 56:2 57:27 58:768 59:493 60:384
61:1060 62:1003 63:1913 64:3849 65:2351 66:4363
67:1799 68:1076 69:2894 70:701 71:359 72:1897
73:1 74:2324 75:283 76:338 77:842 78:696
79:464 80:1081 81:822 82:515 83:450 84:647
85:1030 86:553 87:770 88:342 89:1550 90:175
91:3648 92:503 93:1047 94:1233 95:783 96:447
97:252 98:807 99:35 101:41 106:1 107:4
108:79 109:922 110:517 111:695 112:311 113:409
114:489 115:711 116:940 117:653 118:722 119:1090
120:274 121:742 122:1617 123:1043 124:1309 125:1252
128:213 129:165 130:167 131:560 132:100 133:20
134:208 135:49 136:209 137:139 138:299 139:110
140:462 141:173 142:363 143:389 144:473 145:52
146:436 147:192 148:607 149:264 150:157 151:187
152:296 153:180 154:2 155:388 156:182 157:317
158:131 159:362 160:313 161:197 162:277 163:155
164:493 165:348 166:499 167:413 168:716 169:155
170:771 171:70 172:2 173:1254 174:521 175:335
177:65 178:794 180:779 181:4 182:393 183:240
184:229 185:1 186:1101 187:889 188:913 189:1040
190:4702 192:5708 193:4788 194:3482 195:2947 196:1216
197:15 198:3531 199:3856 200:5550 201:1578 202:8177
203:8363 204:4040 205:2297 206:2546 207:2948 208:3899
209:3467 210:2658 211:1351 212:1968 213:1711 214:748
215:65 216:4858 217:1633 218:545 219:380 220:1192
221:458 222:309 223:97
End of report
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