Routing Table Report 08:00 +10GMT Mon 04 Apr, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/london/
Analysis Summary
----------------
BGP routing table entries examined: 346705
Prefixes after maximum aggregation: 157847
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 173966
Total ASes present in the Internet Routing Table: 36049
Prefixes per ASN: 9.62
Origin-only ASes present in the Internet Routing Table: 31181
Origin ASes announcing only one prefix: 15022
Transit ASes present in the Internet Routing Table: 4868
Transit-only ASes present in the Internet Routing Table: 118
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: 1918
Unregistered ASNs in the Routing Table: 337
Number of 32-bit ASNs allocated by the RIRs: 1259
Number of 32-bit ASNs visible in the Routing Table: 0
Prefixes from 32-bit ASNs in the Routing Table: 2087
Special use prefixes present in the Routing Table: 6
Prefixes being announced from unallocated address space: 186
Number of addresses announced to Internet: 2409737472
Equivalent to 143 /8s, 161 /16s and 173 /24s
Percentage of available address space announced: 65.0
Percentage of allocated address space announced: 65.0
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.1
Total number of prefixes smaller than registry allocations: 142115
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 83446
Total APNIC prefixes after maximum aggregation: 28525
APNIC Deaggregation factor: 2.93
Prefixes being announced from the APNIC address blocks: 81187
Unique aggregates announced from the APNIC address blocks: 36619
APNIC Region origin ASes present in the Internet Routing Table: 4326
APNIC Prefixes per ASN: 18.77
APNIC Region origin ASes announcing only one prefix: 1228
APNIC Region transit ASes present in the Internet Routing Table: 660
Average APNIC Region AS path length visible: 4.1
Max APNIC Region AS path length visible: 23
Number of APNIC region 32-bit ASNs visible in the Routing Table: 0
Number of APNIC addresses announced to Internet: 600520704
Equivalent to 35 /8s, 203 /16s and 56 /24s
Percentage of available APNIC address space announced: 76.2
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: 137326
Total ARIN prefixes after maximum aggregation: 70325
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 110164
Unique aggregates announced from the ARIN address blocks: 45021
ARIN Region origin ASes present in the Internet Routing Table: 14217
ARIN Prefixes per ASN: 7.75
ARIN Region origin ASes announcing only one prefix: 5445
ARIN Region transit ASes present in the Internet Routing Table: 1418
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: 797462784
Equivalent to 47 /8s, 136 /16s and 81 /24s
Percentage of available ARIN address space announced: 63.4
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: 83523
Total RIPE prefixes after maximum aggregation: 47520
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 76757
Unique aggregates announced from the RIPE address blocks: 50376
RIPE Region origin ASes present in the Internet Routing Table: 15469
RIPE Prefixes per ASN: 4.96
RIPE Region origin ASes announcing only one prefix: 7779
RIPE Region transit ASes present in the Internet Routing Table: 2382
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: 465793280
Equivalent to 27 /8s, 195 /16s and 113 /24s
Percentage of available RIPE address space announced: 75.0
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: 31985
Total LACNIC prefixes after maximum aggregation: 7305
LACNIC Deaggregation factor: 4.38
Prefixes being announced from the LACNIC address blocks: 31051
Unique aggregates announced from the LACNIC address blocks: 16241
LACNIC Region origin ASes present in the Internet Routing Table: 1424
LACNIC Prefixes per ASN: 21.81
LACNIC Region origin ASes announcing only one prefix: 437
LACNIC Region transit ASes present in the Internet Routing Table: 253
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: 81617920
Equivalent to 4 /8s, 221 /16s and 100 /24s
Percentage of available LACNIC address space announced: 54.1
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: 7616
Total AfriNIC prefixes after maximum aggregation: 1823
AfriNIC Deaggregation factor: 4.18
Prefixes being announced from the AfriNIC address blocks: 5994
Unique aggregates announced from the AfriNIC address blocks: 1865
AfriNIC Region origin ASes present in the Internet Routing Table: 439
AfriNIC Prefixes per ASN: 13.65
AfriNIC Region origin ASes announcing only one prefix: 133
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: 22648064
Equivalent to 1 /8s, 89 /16s and 149 /24s
Percentage of available AfriNIC address space announced: 33.7
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 9506 601 Korea Telecom (KIX)
7545 1543 301 83 TPG Internet Pty Ltd
17974 1438 472 34 PT Telekomunikasi Indonesia
4755 1436 638 168 TATA Communications formerly
24560 1137 322 204 Bharti Airtel Ltd., Telemedia
9583 1055 77 494 Sify Limited
9829 1002 869 51 National Internet Backbone
4808 947 2028 276 CNCGROUP IP network China169
17488 939 162 97 Hathway IP Over Cable Interne
18101 936 116 139 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 3671 3838 258 BellSouth.net Inc.
4323 2539 1106 397 tw telecom holdings, inc.
1785 1789 681 130 PaeTec Communications, Inc.
18566 1597 330 198 Covad Communications Co.
6478 1596 304 47 AT&T Services, Inc.
20115 1531 1541 640 Charter Communications
19262 1489 4935 303 Verizon Online LLC
7018 1370 6930 896 AT&T Services, Inc.
11492 1324 240 15 CABLE ONE, INC.
22773 1291 2865 84 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 541 326 30 Goldenlines main autonomous s
6830 512 1780 317 UPC Broadband
34984 484 97 186 BILISIM TELEKOM
3292 454 2013 391 TDC Data Networks
20940 451 128 341 Akamai Technologies European
8866 446 134 26 Bulgarian Telecommunication C
9198 415 267 15 Kazakhtelecom Data Network Ad
3320 412 7604 358 Deutsche Telekom AG
8551 405 355 38 Bezeq International
702 400 1803 313 >>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 1405 262 152 Types of queries are: POCs, o
28573 1246 971 84 Types of queries are: POCs, o
8151 1230 2661 366 Uninet S.A. de C.V.
6503 1109 354 73 Axtel, S.A.B. de C.V.
7303 901 464 136 Telecom Argentina S.A.
14420 642 52 91 CORPORACION NACIONAL DE TELEC
22047 567 310 15 Types of queries are: POCs, o
3816 516 225 97 Types of queries are: POCs, o
11172 485 99 80 Alestra, S. de R.L. de C.V.
14117 480 38 44 Telefonica del Sur 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 839 445 11 TEDATA
24863 769 147 36 LINKdotNET AS number
15475 425 90 8 Nile Online
36992 292 271 14 Etisalat MISR
3741 265 985 227 The Internet Solution
24835 232 78 10 RAYA Telecom - Egypt
6713 231 215 12 Itissalat Al-MAGHRIB
33776 227 13 5 Starcomms Nigeria Limited
29571 191 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 3671 3838 258 BellSouth.net Inc.
4323 2539 1106 397 tw telecom holdings, inc.
23456 2087 503 1125 32-bit ASN transition
4766 1871 9506 601 Korea Telecom (KIX)
1785 1789 681 130 PaeTec Communications, Inc.
18566 1597 330 198 Covad Communications Co.
6478 1596 304 47 AT&T Services, Inc.
7545 1543 301 83 TPG Internet Pty Ltd
20115 1531 1541 640 Charter Communications
19262 1489 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 2539 2142 tw telecom holdings, inc.
1785 1789 1659 PaeTec Communications, Inc.
6478 1596 1549 AT&T Services, Inc.
7545 1543 1460 TPG Internet Pty Ltd
17974 1438 1404 PT Telekomunikasi Indonesia
18566 1597 1399 Covad Communications Co.
11492 1324 1309 CABLE ONE, INC.
4766 1871 1270 Korea Telecom (KIX)
4755 1436 1268 TATA Communications formerly
10620 1405 1253 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
1.3.0.0/16 38639 for assignment to JPNIC membe
2.56.0.0/16 44559 E-Rent 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
41.57.192.0/18 22750 BCSNET
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 /8:20 /9:11 /10:26 /11:74 /12:218
/13:447 /14:766 /15:1373 /16:11535 /17:5686 /18:9371
/19:19162 /20:24887 /21:25238 /22:33500 /23:31924 /24:182004
/25:11 /26:17 /27:22 /28:155 /29:97 /30:51
/31:0 /32:110
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2264 3671 BellSouth.net Inc.
18566 1576 1597 Covad Communications Co.
6478 1550 1596 AT&T Services, Inc.
4323 1358 2539 tw telecom holdings, inc.
10620 1295 1405 Types of queries are: POCs, o
11492 1273 1324 CABLE ONE, INC.
23456 1109 2087 32-bit ASN transition
7011 1064 1164 Frontier Communications of Am
1785 1055 1789 PaeTec Communications, Inc.
6503 893 1109 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)
----------------------------------------------
1:296 2:53 4:14 5:1 8:347 12:2015
13:1 14:413 15:15 16:3 17:8 20:9
23:5 24:1592 27:705 31:53 32:55 33:2
34:2 37:1 38:747 39:1 40:101 41:2371
42:1 44:3 46:792 47:4 49:143 50:139
52:13 55:5 56:2 57:27 58:778 59:478
60:385 61:1039 62:1009 63:1900 64:3843 65:2331
66:4299 67:1810 68:1078 69:2906 70:700 71:343
72:1899 73:1 74:2325 75:285 76:336 77:851
78:694 79:452 80:1075 81:822 82:513 83:467
84:647 85:1032 86:556 87:770 88:339 89:1562
90:175 91:3661 92:509 93:1045 94:1241 95:786
96:454 97:253 98:817 99:35 101:41 106:1
107:4 108:80 109:925 110:517 111:671 112:314
113:387 114:492 115:670 116:916 117:685 118:754
119:1108 120:285 121:684 122:1602 123:1032 124:1263
125:1248 128:213 129:168 130:166 131:563 132:101
133:20 134:208 135:49 136:210 137:139 138:300
139:103 140:462 141:173 142:362 143:389 144:477
145:52 146:439 147:202 148:617 149:262 150:159
151:187 152:296 153:180 154:2 155:389 156:184
157:320 158:131 159:374 160:316 161:232 162:276
163:156 164:489 165:347 166:503 167:414 168:716
169:153 170:776 171:74 172:2 173:1260 174:529
175:337 177:70 178:767 180:790 181:4 182:400
183:202 184:237 185:1 186:1118 187:898 188:925
189:1037 190:4777 192:5713 193:4807 194:3478 195:2948
196:1208 197:15 198:3533 199:3840 200:5538 201:1481
202:8139 203:8331 204:4051 205:2298 206:2546 207:2949
208:3911 209:3475 210:2650 211:1353 212:1975 213:1711
214:730 215:66 216:4826 217:1627 218:546 219:372
220:1189 221:462 222:312 223:102
End of report
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