Routing Table Report 08:00 +10GMT Fri 29 Apr, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/london/
Analysis Summary
----------------
BGP routing table entries examined: 350632
Prefixes after maximum aggregation: 158949
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 175183
Total ASes present in the Internet Routing Table: 36231
Prefixes per ASN: 9.68
Origin-only ASes present in the Internet Routing Table: 31319
Origin ASes announcing only one prefix: 15084
Transit ASes present in the Internet Routing Table: 4912
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: 27
Max AS path prepend of ASN (32374) 19
Prefixes from unregistered ASNs in the Routing Table: 1975
Unregistered ASNs in the Routing Table: 388
Number of 32-bit ASNs allocated by the RIRs: 1315
Number of 32-bit ASNs visible in the Routing Table: 0
Prefixes from 32-bit ASNs in the Routing Table: 2266
Special use prefixes present in the Routing Table: 6
Prefixes being announced from unallocated address space: 153
Number of addresses announced to Internet: 2437304064
Equivalent to 145 /8s, 70 /16s and 79 /24s
Percentage of available address space announced: 65.8
Percentage of allocated address space announced: 65.8
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.6
Total number of prefixes smaller than registry allocations: 144257
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 84638
Total APNIC prefixes after maximum aggregation: 28545
APNIC Deaggregation factor: 2.97
Prefixes being announced from the APNIC address blocks: 81924
Unique aggregates announced from the APNIC address blocks: 36471
APNIC Region origin ASes present in the Internet Routing Table: 4369
APNIC Prefixes per ASN: 18.75
APNIC Region origin ASes announcing only one prefix: 1237
APNIC Region transit ASes present in the Internet Routing Table: 670
Average APNIC Region AS path length visible: 4.1
Max APNIC Region AS path length visible: 20
Number of APNIC region 32-bit ASNs visible in the Routing Table: 0
Number of APNIC addresses announced to Internet: 610630656
Equivalent to 36 /8s, 101 /16s and 124 /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: 138783
Total ARIN prefixes after maximum aggregation: 70756
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 111441
Unique aggregates announced from the ARIN address blocks: 45217
ARIN Region origin ASes present in the Internet Routing Table: 14263
ARIN Prefixes per ASN: 7.81
ARIN Region origin ASes announcing only one prefix: 5460
ARIN Region transit ASes present in the Internet Routing Table: 1419
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: 799731456
Equivalent to 47 /8s, 170 /16s and 239 /24s
Percentage of available ARIN address space announced: 63.6
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: 84325
Total RIPE prefixes after maximum aggregation: 47848
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 77455
Unique aggregates announced from the RIPE address blocks: 51039
RIPE Region origin ASes present in the Internet Routing Table: 15554
RIPE Prefixes per ASN: 4.98
RIPE Region origin ASes announcing only one prefix: 7817
RIPE Region transit ASes present in the Internet Routing Table: 2411
Average RIPE Region AS path length visible: 3.5
Max RIPE Region AS path length visible: 27
Number of RIPE region 32-bit ASNs visible in the Routing Table: 0
Number of RIPE addresses announced to Internet: 467090176
Equivalent to 27 /8s, 215 /16s and 59 /24s
Percentage of available RIPE address space announced: 75.2
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: 32162
Total LACNIC prefixes after maximum aggregation: 7359
LACNIC Deaggregation factor: 4.37
Prefixes being announced from the LACNIC address blocks: 31314
Unique aggregates announced from the LACNIC address blocks: 16537
LACNIC Region origin ASes present in the Internet Routing Table: 1430
LACNIC Prefixes per ASN: 21.90
LACNIC Region origin ASes announcing only one prefix: 434
LACNIC Region transit ASes present in the Internet Routing Table: 251
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 19
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 0
Number of LACNIC addresses announced to Internet: 82770688
Equivalent to 4 /8s, 238 /16s and 251 /24s
Percentage of available LACNIC address space announced: 54.8
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: 7763
Total AfriNIC prefixes after maximum aggregation: 1852
AfriNIC Deaggregation factor: 4.19
Prefixes being announced from the AfriNIC address blocks: 6115
Unique aggregates announced from the AfriNIC address blocks: 1905
AfriNIC Region origin ASes present in the Internet Routing Table: 447
AfriNIC Prefixes per ASN: 13.68
AfriNIC Region origin ASes announcing only one prefix: 136
AfriNIC Region transit ASes present in the Internet Routing Table: 97
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: 23368192
Equivalent to 1 /8s, 100 /16s and 146 /24s
Percentage of available AfriNIC address space announced: 34.8
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 1871 9474 599 Korea Telecom (KIX)
17974 1495 470 34 PT Telekomunikasi Indonesia
7545 1467 301 81 TPG Internet Pty Ltd
4755 1456 634 166 TATA Communications formerly
7552 1210 1064 7 Vietel Corporation
24560 1158 336 190 Bharti Airtel Ltd., Telemedia
9583 1056 78 494 Sify Limited
9829 1007 870 50 National Internet Backbone
4808 952 2027 281 CNCGROUP IP network China169
17488 942 165 100 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 3644 3821 258 BellSouth.net Inc.
4323 2629 1102 398 tw telecom holdings, inc.
1785 1793 681 128 PaeTec Communications, Inc.
18566 1737 340 231 Covad Communications Co.
6478 1652 311 55 AT&T Services, Inc.
20115 1532 1551 643 Charter Communications
19262 1495 4949 298 Verizon Online LLC
7018 1360 6943 900 AT&T Services, Inc.
22773 1299 2865 84 Cox Communications Inc.
2386 1269 536 911 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 540 326 30 Goldenlines main autonomous s
6830 518 1780 321 UPC Broadband
34984 509 106 182 BILISIM TELEKOM
3292 457 1997 391 TDC Data Networks
29049 450 33 48 AzerSat LLC.
8866 446 134 26 Bulgarian Telecommunication C
20940 445 130 340 Akamai Technologies European
3320 422 7609 367 Deutsche Telekom AG
12479 408 577 6 France Telecom Espana SA
8551 407 356 39 Bezeq International
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 1446 268 160 Types of queries are: POCs, o
28573 1272 988 87 Types of queries are: POCs, o
8151 1232 2671 359 Uninet S.A. de C.V.
7303 904 466 137 Telecom Argentina S.A.
6503 902 354 73 Axtel, S.A.B. de C.V.
14420 665 53 91 CORPORACION NACIONAL DE TELEC
22047 566 310 15 Types of queries are: POCs, o
3816 517 226 97 Types of queries are: POCs, o
14117 492 46 43 Telefonica del Sur S.A.
11172 487 99 82 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 878 445 11 TEDATA
24863 776 147 37 LINKdotNET AS number
15475 425 90 8 Nile Online
36992 300 415 13 Etisalat MISR
3741 267 985 227 The Internet Solution
6713 239 215 13 Itissalat Al-MAGHRIB
33776 227 13 5 Starcomms Nigeria Limited
24835 211 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/london/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
6389 3644 3821 258 BellSouth.net Inc.
4323 2629 1102 398 tw telecom holdings, inc.
23456 2266 657 1246 32-bit ASN transition
4766 1871 9474 599 Korea Telecom (KIX)
1785 1793 681 128 PaeTec Communications, Inc.
18566 1737 340 231 Covad Communications Co.
6478 1652 311 55 AT&T Services, Inc.
20115 1532 1551 643 Charter Communications
17974 1495 470 34 PT Telekomunikasi Indonesia
19262 1495 4949 298 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 2629 2231 tw telecom holdings, inc.
1785 1793 1665 PaeTec Communications, Inc.
6478 1652 1597 AT&T Services, Inc.
18566 1737 1506 Covad Communications Co.
17974 1495 1461 PT Telekomunikasi Indonesia
7545 1467 1386 TPG Internet Pty Ltd
4755 1456 1290 TATA Communications formerly
10620 1446 1286 Types of queries are: POCs, o
4766 1871 1272 Korea Telecom (KIX)
22773 1299 1215 Cox Communications Inc.
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
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
31.193.128.0/20 29550 Simply Transit Ltd
31.193.168.0/21 31708 Coreix Limited
31.200.0.0/17 12978 Dogan Iletisim Elektronik Ser
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 /8:22 /9:12 /10:28 /11:77 /12:221
/13:459 /14:788 /15:1386 /16:11636 /17:5739 /18:9577
/19:19262 /20:25621 /21:25540 /22:33594 /23:32322 /24:183869
/25:11 /26:17 /27:23 /28:160 /29:96 /30:52
/31:0 /32:120
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2244 3644 BellSouth.net Inc.
18566 1711 1737 Covad Communications Co.
6478 1606 1652 AT&T Services, Inc.
10620 1336 1446 Types of queries are: POCs, o
4323 1330 2629 tw telecom holdings, inc.
11492 1166 1217 CABLE ONE, INC.
23456 1126 2266 32-bit ASN transition
7011 1062 1161 Frontier Communications of Am
1785 1059 1793 PaeTec Communications, Inc.
22773 843 1299 Cox Communications Inc.
Complete listing at http://thyme.rand.apnic.net/london/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:262 2:47 4:14 5:1 6:3 8:351
12:1985 13:1 14:430 15:15 16:3 17:8
20:9 23:5 24:1575 27:721 31:233 32:55
33:3 34:2 37:1 38:761 40:101 41:2454
42:5 44:3 46:886 47:4 49:171 50:375
52:13 55:3 56:2 57:26 58:793 59:470
60:354 61:1092 62:985 63:1927 64:3920 65:2315
66:4351 67:1866 68:1078 69:2965 70:701 71:346
72:1904 73:1 74:2352 75:298 76:333 77:836
78:679 79:462 80:1097 81:814 82:500 83:466
84:652 85:1081 86:547 87:759 88:323 89:1581
90:183 91:3705 92:510 93:1058 94:1262 95:796
96:472 97:250 98:823 99:35 101:60 103:5
106:1 107:5 108:83 109:936 110:552 111:695
112:308 113:395 114:506 115:677 116:935 117:678
118:770 119:1135 120:299 121:645 122:1623 123:1057
124:1224 125:1203 128:212 129:158 130:166 131:564
132:103 133:19 134:208 135:49 136:211 137:136
138:302 139:104 140:465 141:174 142:384 143:399
144:483 145:52 146:437 147:208 148:583 149:242
150:163 151:187 152:307 153:179 154:2 155:395
156:187 157:325 158:133 159:377 160:313 161:239
162:276 163:154 164:494 165:348 166:511 167:426
168:715 169:152 170:785 171:76 172:1 173:1509
174:533 175:349 177:80 178:844 180:805 181:15
182:424 183:202 184:258 185:1 186:1128 187:801
188:988 189:1011 190:4818 192:5737 193:4830 194:3462
195:2965 196:1208 197:16 198:3510 199:3880 200:5512
201:1487 202:8146 203:8318 204:4058 205:2300 206:2647
207:2959 208:3948 209:3448 210:2640 211:1377 212:1975
213:1692 214:724 215:67 216:4857 217:1654 218:551
219:372 220:1197 221:465 222:305 223:130
End of report
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