Routing Table Report 08:00 +10GMT Fri 21 Oct, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/london/
Analysis Summary
----------------
BGP routing table entries examined: 374415
Prefixes after maximum aggregation: 167834
Deaggregation factor: 2.23
Unique aggregates announced to Internet: 185654
Total ASes present in the Internet Routing Table: 37448
Prefixes per ASN: 10.00
Origin-only ASes present in the Internet Routing Table: 32318
Origin ASes announcing only one prefix: 15521
Transit ASes present in the Internet Routing Table: 5130
Transit-only ASes present in the Internet Routing Table: 125
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 27
Max AS path prepend of ASN (51310) 25
Prefixes from unregistered ASNs in the Routing Table: 2225
Unregistered ASNs in the Routing Table: 889
Number of 32-bit ASNs allocated by the RIRs: 1874
Number of 32-bit ASNs visible in the Routing Table: 0
Prefixes from 32-bit ASNs in the Routing Table: 3493
Special use prefixes present in the Routing Table: 6
Prefixes being announced from unallocated address space: 93
Number of addresses announced to Internet: 2502937088
Equivalent to 149 /8s, 47 /16s and 202 /24s
Percentage of available address space announced: 67.5
Percentage of allocated address space announced: 67.5
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 91.5
Total number of prefixes smaller than registry allocations: 157063
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 89408
Total APNIC prefixes after maximum aggregation: 29605
APNIC Deaggregation factor: 3.02
Prefixes being announced from the APNIC address blocks: 86799
Unique aggregates announced from the APNIC address blocks: 38008
APNIC Region origin ASes present in the Internet Routing Table: 4540
APNIC Prefixes per ASN: 19.12
APNIC Region origin ASes announcing only one prefix: 1278
APNIC Region transit ASes present in the Internet Routing Table: 693
Average APNIC Region AS path length visible: 4.0
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: 628530944
Equivalent to 37 /8s, 118 /16s and 159 /24s
Percentage of available APNIC address space announced: 79.7
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319,
58368-59391, 131072-132095, 132096-133119
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: 144498
Total ARIN prefixes after maximum aggregation: 73951
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 116718
Unique aggregates announced from the ARIN address blocks: 48236
ARIN Region origin ASes present in the Internet Routing Table: 14671
ARIN Prefixes per ASN: 7.96
ARIN Region origin ASes announcing only one prefix: 5655
ARIN Region transit ASes present in the Internet Routing Table: 1488
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: 804784384
Equivalent to 47 /8s, 248 /16s and 9 /24s
Percentage of available ARIN address space announced: 64.0
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: 93128
Total RIPE prefixes after maximum aggregation: 50634
RIPE Deaggregation factor: 1.84
Prefixes being announced from the RIPE address blocks: 85776
Unique aggregates announced from the RIPE address blocks: 54105
RIPE Region origin ASes present in the Internet Routing Table: 16047
RIPE Prefixes per ASN: 5.35
RIPE Region origin ASes announcing only one prefix: 7983
RIPE Region transit ASes present in the Internet Routing Table: 2514
Average RIPE Region AS path length visible: 3.4
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: 491074560
Equivalent to 29 /8s, 69 /16s and 52 /24s
Percentage of available RIPE address space announced: 79.1
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: 34672
Total LACNIC prefixes after maximum aggregation: 7803
LACNIC Deaggregation factor: 4.44
Prefixes being announced from the LACNIC address blocks: 34248
Unique aggregates announced from the LACNIC address blocks: 18039
LACNIC Region origin ASes present in the Internet Routing Table: 1530
LACNIC Prefixes per ASN: 22.38
LACNIC Region origin ASes announcing only one prefix: 448
LACNIC Region transit ASes present in the Internet Routing Table: 261
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: 91606272
Equivalent to 5 /8s, 117 /16s and 205 /24s
Percentage of available LACNIC address space announced: 60.7
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: 8547
Total AfriNIC prefixes after maximum aggregation: 2013
AfriNIC Deaggregation factor: 4.25
Prefixes being announced from the AfriNIC address blocks: 6603
Unique aggregates announced from the AfriNIC address blocks: 1996
AfriNIC Region origin ASes present in the Internet Routing Table: 490
AfriNIC Prefixes per ASN: 13.48
AfriNIC Region origin ASes announcing only one prefix: 157
AfriNIC Region transit ASes present in the Internet Routing Table: 107
Average AfriNIC Region AS path length visible: 3.3
Max AfriNIC Region AS path length visible: 24
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 0
Number of AfriNIC addresses announced to Internet: 27823872
Equivalent to 1 /8s, 168 /16s and 143 /24s
Percentage of available AfriNIC address space announced: 41.5
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 1937 11087 656 Korea Telecom (KIX)
7545 1608 303 86 TPG Internet Pty Ltd
17974 1604 512 38 PT Telekomunikasi Indonesia
4755 1535 380 175 TATA Communications formerly
9829 1166 989 28 National Internet Backbone
9583 1088 80 503 Sify Limited
7552 983 1062 11 Vietel Corporation
24560 967 343 220 Bharti Airtel Ltd., Telemedia
4808 965 2006 273 CNCGROUP IP network China169
18101 952 166 149 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 3547 3815 222 BellSouth.net Inc.
7029 2318 1042 210 Windstream Communications Inc
18566 2097 382 176 Covad Communications Co.
1785 1842 680 122 PaeTec Communications, Inc.
4323 1626 1099 392 tw telecom holdings, inc.
20115 1591 1545 622 Charter Communications
22773 1461 2907 100 Cox Communications Inc.
19262 1395 4728 400 Verizon Online LLC
30036 1393 251 671 Mediacom Communications Corp
7018 1336 7065 877 AT&T Services, 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
3352 2211 2317 51 Internet Access Network of TD
8402 1471 352 13 Corbina telecom
6830 652 1927 415 UPC Broadband
34984 583 108 179 BILISIM TELEKOM
20940 547 182 421 Akamai Technologies European
9116 540 326 31 Goldenlines main autonomous s
3320 504 8169 384 Deutsche Telekom AG
3292 483 2080 410 TDC Data Networks
12479 483 593 7 France Telecom Espana SA
8866 458 133 26 Bulgarian Telecommunication C
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 1694 313 155 Types of queries are: POCs, o
28573 1433 1032 69 Types of queries are: POCs, o
8151 1284 2876 346 Uninet S.A. de C.V.
7303 1229 747 177 Telecom Argentina S.A.
22047 580 322 17 Types of queries are: POCs, o
27947 577 72 79 Telconet S.A
6503 558 450 70 Axtel, S.A.B. de C.V.
7738 552 1050 31 Telecomunicacoes da Bahia S.A
3816 540 233 96 Types of queries are: POCs, o
11172 521 101 96 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
24863 798 146 33 LINKdotNET AS number
8452 642 446 12 TEDATA
15475 454 74 8 Nile Online
36992 297 415 21 Etisalat MISR
3741 280 938 230 The Internet Solution
6713 244 519 14 Itissalat Al-MAGHRIB
15706 240 32 6 Sudatel Internet Exchange Aut
29571 217 17 13 Ci Telecom Autonomous system
33776 207 13 14 Starcomms Nigeria Limited
12258 197 28 58 Vodacom Internet Company
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 3547 3815 222 BellSouth.net Inc.
7029 2318 1042 210 Windstream Communications Inc
3352 2211 2317 51 Internet Access Network of TD
18566 2097 382 176 Covad Communications Co.
4766 1937 11087 656 Korea Telecom (KIX)
1785 1842 680 122 PaeTec Communications, Inc.
10620 1694 313 155 Types of queries are: POCs, o
4323 1626 1099 392 tw telecom holdings, inc.
7545 1608 303 86 TPG Internet Pty Ltd
17974 1604 512 38 PT Telekomunikasi Indonesia
Complete listing at http://thyme.rand.apnic.net/london/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
3352 2211 2160 Internet Access Network of TD
7029 2318 2108 Windstream Communications Inc
18566 2097 1921 Covad Communications Co.
1785 1842 1720 PaeTec Communications, Inc.
17974 1604 1566 PT Telekomunikasi Indonesia
10620 1694 1539 Types of queries are: POCs, o
7545 1608 1522 TPG Internet Pty Ltd
8402 1471 1458 Corbina telecom
28573 1433 1364 Types of queries are: POCs, o
22773 1461 1361 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
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.
25639 UNALLOCATED 12.41.169.0/24 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
41.222.79.0/24 37125 Layer3 Limited
41.223.92.0/22 36936 >>UNKNOWN<<
62.61.220.0/24 24974 Tachyon Europe BV
62.61.221.0/24 24974 Tachyon Europe BV
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 /9:12 /10:27 /11:81 /12:236
/13:464 /14:806 /15:1420 /16:11965 /17:6020 /18:9982
/19:20060 /20:27406 /21:27516 /22:36983 /23:35513 /24:195400
/25:12 /26:19 /27:21 /28:149 /29:119 /30:59
/31:0 /32:125
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2185 3547 BellSouth.net Inc.
18566 2047 2097 Covad Communications Co.
7029 1974 2318 Windstream Communications Inc
3352 1757 2211 Internet Access Network of TD
10620 1589 1694 Types of queries are: POCs, o
8402 1447 1471 Corbina telecom
30036 1355 1393 Mediacom Communications Corp
11492 1118 1155 CABLE ONE, INC.
1785 1057 1842 PaeTec Communications, Inc.
7011 1047 1165 Frontier Communications of Am
Complete listing at http://thyme.rand.apnic.net/london/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:403 2:480 4:15 5:1 6:3 8:357
12:1954 13:1 14:531 15:11 16:3 17:7
20:9 23:58 24:1673 27:959 31:602 32:60
33:4 34:2 36:4 38:750 40:110 41:2679
42:53 44:3 46:992 47:3 49:293 50:439
52:13 55:6 56:2 57:35 58:833 59:489
60:360 61:1024 62:1089 63:1933 64:4032 65:2304
66:4270 67:1980 68:1146 69:3240 70:888 71:377
72:1846 74:2566 75:388 76:319 77:880 78:858
79:482 80:1587 81:941 82:487 83:578 84:621
85:1124 86:411 87:888 88:420 89:1601 90:269
91:4212 92:495 93:1538 94:1310 95:1057 96:431
97:283 98:918 99:37 101:92 103:376 106:70
107:72 108:72 109:1046 110:648 111:785 112:322
113:465 114:597 115:677 116:869 117:684 118:858
119:1194 120:338 121:676 122:1555 123:1017 124:1296
125:1323 128:209 129:174 130:159 131:589 132:134
133:21 134:211 135:54 136:211 137:137 138:284
139:120 140:466 141:297 142:369 143:436 144:491
145:63 146:466 147:214 148:618 149:266 150:159
151:192 152:447 153:178 154:6 155:385 156:203
157:330 158:152 159:410 160:323 161:204 162:337
163:163 164:505 165:366 166:537 167:438 168:737
169:144 170:872 171:85 172:4 173:1695 174:684
175:406 176:271 177:338 178:1058 180:1078 181:36
182:632 183:209 184:383 185:1 186:1296 187:704
188:933 189:874 190:5097 192:5871 193:5033 194:3556
195:3105 196:1255 197:152 198:3568 199:4133 200:5407
201:1646 202:8281 203:8379 204:4222 205:2344 206:2591
207:2761 208:4038 209:3569 210:2613 211:1448 212:2096
213:1769 214:786 215:96 216:4980 217:1617 218:555
219:337 220:1203 221:499 222:296 223:274
End of report