Routing Table Report 08:00 +10GMT Wed 16 Mar, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/london/
Analysis Summary
----------------
BGP routing table entries examined: 345595
Prefixes after maximum aggregation: 157036
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 172897
Total ASes present in the Internet Routing Table: 35909
Prefixes per ASN: 9.62
Origin-only ASes present in the Internet Routing Table: 31065
Origin ASes announcing only one prefix: 14966
Transit ASes present in the Internet Routing Table: 4844
Transit-only ASes present in the Internet Routing Table: 115
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: 1343
Unregistered ASNs in the Routing Table: 305
Number of 32-bit ASNs allocated by the RIRs: 1199
Prefixes from 32-bit ASNs in the Routing Table: 1861
Special use prefixes present in the Routing Table: 6
Prefixes being announced from unallocated address space: 191
Number of addresses announced to Internet: 2400972800
Equivalent to 143 /8s, 27 /16s and 240 /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: 89.2
Total number of prefixes smaller than registry allocations: 141893
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 83147
Total APNIC prefixes after maximum aggregation: 28295
APNIC Deaggregation factor: 2.94
Prefixes being announced from the APNIC address blocks: 80790
Unique aggregates announced from the APNIC address blocks: 36234
APNIC Region origin ASes present in the Internet Routing Table: 4296
APNIC Prefixes per ASN: 18.81
APNIC Region origin ASes announcing only one prefix: 1221
APNIC Region transit ASes present in the Internet Routing Table: 651
Average APNIC Region AS path length visible: 4.1
Max APNIC Region AS path length visible: 19
Number of APNIC addresses announced to Internet: 595133440
Equivalent to 35 /8s, 121 /16s and 4 /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: 137424
Total ARIN prefixes after maximum aggregation: 70252
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 110146
Unique aggregates announced from the ARIN address blocks: 44986
ARIN Region origin ASes present in the Internet Routing Table: 14163
ARIN Prefixes per ASN: 7.78
ARIN Region origin ASes announcing only one prefix: 5402
ARIN Region transit ASes present in the Internet Routing Table: 1392
Average ARIN Region AS path length visible: 3.3
Max ARIN Region AS path length visible: 22
Number of ARIN addresses announced to Internet: 796507136
Equivalent to 47 /8s, 121 /16s and 188 /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: 83307
Total RIPE prefixes after maximum aggregation: 47205
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 76630
Unique aggregates announced from the RIPE address blocks: 50003
RIPE Region origin ASes present in the Internet Routing Table: 15422
RIPE Prefixes per ASN: 4.97
RIPE Region origin ASes announcing only one prefix: 7776
RIPE Region transit ASes present in the Internet Routing Table: 2401
Average RIPE Region AS path length visible: 3.5
Max RIPE Region AS path length visible: 25
Number of RIPE addresses announced to Internet: 464748800
Equivalent to 27 /8s, 179 /16s and 129 /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: 31712
Total LACNIC prefixes after maximum aggregation: 7273
LACNIC Deaggregation factor: 4.36
Prefixes being announced from the LACNIC address blocks: 30746
Unique aggregates announced from the LACNIC address blocks: 16107
LACNIC Region origin ASes present in the Internet Routing Table: 1425
LACNIC Prefixes per ASN: 21.58
LACNIC Region origin ASes announcing only one prefix: 441
LACNIC Region transit ASes present in the Internet Routing Table: 248
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 19
Number of LACNIC addresses announced to Internet: 81374720
Equivalent to 4 /8s, 217 /16s and 174 /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: 7482
Total AfriNIC prefixes after maximum aggregation: 1809
AfriNIC Deaggregation factor: 4.14
Prefixes being announced from the AfriNIC address blocks: 5882
Unique aggregates announced from the AfriNIC address blocks: 1784
AfriNIC Region origin ASes present in the Internet Routing Table: 431
AfriNIC Prefixes per ASN: 13.65
AfriNIC Region origin ASes announcing only one prefix: 126
AfriNIC Region transit ASes present in the Internet Routing Table: 96
Average AfriNIC Region AS path length visible: 3.4
Max AfriNIC Region AS path length visible: 17
Number of AfriNIC addresses announced to Internet: 22042880
Equivalent to 1 /8s, 80 /16s and 89 /24s
Percentage of available AfriNIC address space announced: 32.8
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 1865 9500 589 Korea Telecom (KIX)
7545 1557 301 85 TPG Internet Pty Ltd
4755 1468 653 156 TATA Communications formerly
17974 1410 460 30 PT Telekomunikasi Indonesia
24560 1129 324 186 Bharti Airtel Ltd., Telemedia
9583 1047 76 487 Sify Limited
9829 1004 868 53 National Internet Backbone
17488 944 162 96 Hathway IP Over Cable Interne
4808 937 2032 271 CNCGROUP IP network China169
18101 935 117 141 Reliance Infocom Ltd Internet
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 2584 1109 403 tw telecom holdings, inc.
19262 1830 4953 282 Verizon Online LLC
1785 1794 681 130 PaeTec Communications, Inc.
6478 1546 299 73 AT&T Services, Inc.
20115 1528 1535 649 Charter Communications
18566 1520 325 178 Covad Communications Co.
7018 1382 6868 902 AT&T Services, Inc.
2386 1289 537 929 AT&T Data Communications Serv
22773 1283 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
9198 470 267 15 Kazakhtelecom Data Network Ad
34984 451 95 201 BILISIM TELEKOM
3292 450 1996 389 TDC Data Networks
8866 444 133 24 Bulgarian Telecommunication C
20940 415 98 319 Akamai Technologies European
3320 405 7604 351 Deutsche Telekom AG
8551 405 355 38 Bezeq International
12479 402 577 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 1224 2683 361 Uninet S.A. de C.V.
28573 1221 963 82 Types of queries are: POCs, o
6503 1174 354 74 Axtel, S.A.B. de C.V.
7303 898 463 135 Telecom Argentina S.A.
14420 635 52 88 CORPORACION NACIONAL DE TELEC
22047 544 310 15 Types of queries are: POCs, o
3816 515 225 96 Types of queries are: POCs, o
11172 487 99 83 Alestra, S. de R.L. de C.V.
7738 479 922 30 Telecomunicacoes da Bahia S.A
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 792 445 11 TEDATA
24863 770 147 37 LINKdotNET AS number
15475 420 90 8 Nile Online
36992 295 271 14 Etisalat MISR
3741 266 987 228 The Internet Solution
33776 230 13 5 Starcomms Nigeria Limited
24835 225 78 10 RAYA Telecom - Egypt
6713 204 199 11 Itissalat Al-MAGHRIB
29571 192 17 11 Ci Telecom Autonomous system
16637 139 422 85 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 2584 1109 403 tw telecom holdings, inc.
4766 1865 9500 589 Korea Telecom (KIX)
23456 1861 473 1051 32-bit ASN transition
19262 1830 4953 282 Verizon Online LLC
1785 1794 681 130 PaeTec Communications, Inc.
7545 1557 301 85 TPG Internet Pty Ltd
6478 1546 299 73 AT&T Services, Inc.
20115 1528 1535 649 Charter Communications
18566 1520 325 178 Covad Communications Co.
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 2584 2181 tw telecom holdings, inc.
1785 1794 1664 PaeTec Communications, Inc.
19262 1830 1548 Verizon Online LLC
6478 1546 1473 AT&T Services, Inc.
7545 1557 1472 TPG Internet Pty Ltd
17974 1410 1380 PT Telekomunikasi Indonesia
18566 1520 1342 Covad Communications Co.
4755 1468 1312 TATA Communications formerly
4766 1865 1276 Korea Telecom (KIX)
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
31.185.0.0/21 48573 LLC NFS Telecom
41.57.192.0/18 22750 BCSNET
41.222.79.0/24 36938 >>UNKNOWN<<
41.223.92.0/22 36936 >>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 /11:73 /12:217
/13:446 /14:765 /15:1367 /16:11518 /17:5641 /18:9320
/19:19121 /20:24561 /21:25177 /22:33487 /23:31808 /24:181589
/25:11 /26:17 /27:24 /28:149 /29:95 /30:48
/31:0 /32:104
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2268 3678 BellSouth.net Inc.
6478 1500 1546 AT&T Services, Inc.
18566 1499 1520 Covad Communications Co.
4323 1392 2584 tw telecom holdings, inc.
10620 1283 1392 Types of queries are: POCs, o
11492 1233 1276 CABLE ONE, INC.
7011 1062 1162 Frontier Communications of Am
1785 1057 1794 PaeTec Communications, Inc.
23456 1048 1861 32-bit ASN transition
6503 952 1174 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)
----------------------------------------------
1:269 2:72 4:14 5:1 8:340 12:2025
13:1 14:402 15:15 16:3 17:8 20:10
23:3 24:1525 27:631 31:2 32:56 33:4
34:2 37:1 38:710 39:1 40:101 41:2284
44:3 46:725 47:4 49:159 50:201 52:13
55:2 56:2 57:29 58:759 59:491 60:385
61:1041 62:996 63:1920 64:3841 65:2347 66:4334
67:1771 68:1073 69:2894 70:702 71:400 72:1999
73:1 74:2349 75:283 76:343 77:846 78:698
79:456 80:1099 81:818 82:518 83:470 84:644
85:1046 86:576 87:769 88:353 89:1572 90:174
91:3634 92:497 93:1045 94:1219 95:783 96:466
97:251 98:799 99:34 101:44 106:1 107:4
108:129 109:898 110:476 111:710 112:312 113:372
114:476 115:708 116:943 117:656 118:708 119:1036
120:255 121:730 122:1610 123:1032 124:1281 125:1265
128:213 129:163 130:165 131:557 132:100 133:20
134:209 135:49 136:210 137:142 138:298 139:104
140:464 141:203 142:360 143:375 144:472 145:52
146:430 147:209 148:619 149:274 150:153 151:229
152:296 153:180 154:2 155:375 156:179 157:319
158:131 159:365 160:313 161:202 162:276 163:151
164:490 165:346 166:499 167:410 168:719 169:155
170:754 171:69 172:2 173:1265 174:517 175:324
177:43 178:803 180:805 181:4 182:373 183:245
184:234 185:1 186:1042 187:852 188:927 189:1030
190:4684 192:5717 193:4788 194:3488 195:2951 196:1195
197:6 198:3499 199:3827 200:5571 201:1571 202:8079
203:8368 204:4017 205:2280 206:2542 207:2971 208:3917
209:3450 210:2640 211:1343 212:1961 213:1708 214:754
215:66 216:4837 217:1646 218:545 219:379 220:1192
221:457 222:316 223:96
End of report
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