Routing Table Report 08:00 +10GMT Sat 26 Mar, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/london/
Analysis Summary
----------------
BGP routing table entries examined: 346477
Prefixes after maximum aggregation: 157553
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 173355
Total ASes present in the Internet Routing Table: 35977
Prefixes per ASN: 9.63
Origin-only ASes present in the Internet Routing Table: 31138
Origin ASes announcing only one prefix: 14999
Transit ASes present in the Internet Routing Table: 4839
Transit-only ASes present in the Internet Routing Table: 110
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: 1799
Unregistered ASNs in the Routing Table: 329
Number of 32-bit ASNs allocated by the RIRs: 1230
Number of 32-bit ASNs visible in the Routing Table: 0
Prefixes from 32-bit ASNs in the Routing Table: 2013
Special use prefixes present in the Routing Table: 6
Prefixes being announced from unallocated address space: 191
Number of addresses announced to Internet: 2407661824
Equivalent to 143 /8s, 130 /16s and 1 /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: 89.6
Total number of prefixes smaller than registry allocations: 141870
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 83684
Total APNIC prefixes after maximum aggregation: 28505
APNIC Deaggregation factor: 2.94
Prefixes being announced from the APNIC address blocks: 81356
Unique aggregates announced from the APNIC address blocks: 36557
APNIC Region origin ASes present in the Internet Routing Table: 4311
APNIC Prefixes per ASN: 18.87
APNIC Region origin ASes announcing only one prefix: 1222
APNIC Region transit ASes present in the Internet Routing Table: 654
Average APNIC Region AS path length visible: 4.1
Max APNIC Region AS path length visible: 21
Number of APNIC region 32-bit ASNs visible in the Routing Table: 0
Number of APNIC addresses announced to Internet: 599512064
Equivalent to 35 /8s, 187 /16s and 212 /24s
Percentage of available APNIC address space announced: 76.0
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: 137382
Total ARIN prefixes after maximum aggregation: 70310
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 110093
Unique aggregates announced from the ARIN address blocks: 44865
ARIN Region origin ASes present in the Internet Routing Table: 14202
ARIN Prefixes per ASN: 7.75
ARIN Region origin ASes announcing only one prefix: 5425
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: 797223168
Equivalent to 47 /8s, 132 /16s and 169 /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: 83155
Total RIPE prefixes after maximum aggregation: 47364
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 76501
Unique aggregates announced from the RIPE address blocks: 50022
RIPE Region origin ASes present in the Internet Routing Table: 15434
RIPE Prefixes per ASN: 4.96
RIPE Region origin ASes announcing only one prefix: 7778
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: 465189376
Equivalent to 27 /8s, 186 /16s and 58 /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: 32000
Total LACNIC prefixes after maximum aggregation: 7271
LACNIC Deaggregation factor: 4.40
Prefixes being announced from the LACNIC address blocks: 31072
Unique aggregates announced from the LACNIC address blocks: 16268
LACNIC Region origin ASes present in the Internet Routing Table: 1428
LACNIC Prefixes per ASN: 21.76
LACNIC Region origin ASes announcing only one prefix: 444
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: 18
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 0
Number of LACNIC addresses announced to Internet: 81458688
Equivalent to 4 /8s, 218 /16s and 246 /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: 7619
Total AfriNIC prefixes after maximum aggregation: 1814
AfriNIC Deaggregation factor: 4.20
Prefixes being announced from the AfriNIC address blocks: 5986
Unique aggregates announced from the AfriNIC address blocks: 1852
AfriNIC Region origin ASes present in the Internet Routing Table: 436
AfriNIC Prefixes per ASN: 13.73
AfriNIC Region origin ASes announcing only one prefix: 130
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 1479 653 158 TATA Communications formerly
17974 1454 472 34 PT Telekomunikasi Indonesia
24560 1130 321 203 Bharti Airtel Ltd., Telemedia
9583 1055 77 493 Sify Limited
9829 1002 868 53 National Internet Backbone
4808 947 2034 278 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 3674 3838 258 BellSouth.net Inc.
4323 2565 1109 402 tw telecom holdings, inc.
1785 1789 681 131 PaeTec Communications, Inc.
18566 1597 330 198 Covad Communications Co.
6478 1571 302 36 AT&T Services, Inc.
20115 1530 1540 650 Charter Communications
19262 1487 4935 303 Verizon Online LLC
7018 1372 6836 898 AT&T Services, Inc.
11492 1325 240 15 CABLE ONE, INC.
22773 1284 2865 79 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 415 98 322 Akamai Technologies European
3320 411 7604 358 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 1403 262 152 Types of queries are: POCs, o
28573 1230 970 83 Types of queries are: POCs, o
8151 1226 2655 362 Uninet S.A. de C.V.
6503 1217 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 567 310 15 Types of queries are: POCs, o
3816 516 225 97 Types of queries are: POCs, o
13489 490 213 111 EPM Telecomunicaciones S.A. E
11172 485 99 80 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 841 445 11 TEDATA
24863 771 147 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 214 199 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 3674 3838 258 BellSouth.net Inc.
4323 2565 1109 402 tw telecom holdings, inc.
23456 2013 492 1095 32-bit ASN transition
4766 1851 9501 592 Korea Telecom (KIX)
1785 1789 681 131 PaeTec Communications, Inc.
18566 1597 330 198 Covad Communications Co.
6478 1571 302 36 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 1789 1658 PaeTec Communications, Inc.
6478 1571 1535 AT&T Services, Inc.
7545 1550 1467 TPG Internet Pty Ltd
17974 1454 1420 PT Telekomunikasi Indonesia
18566 1597 1399 Covad Communications Co.
4755 1479 1321 TATA Communications formerly
11492 1325 1310 CABLE ONE, INC.
4766 1851 1259 Korea Telecom (KIX)
10620 1403 1251 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
24.225.128.0/18 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
31.186.112.0/21 8681 Jersey Telecoms Island Networ
31.186.160.0/21 35467 DataCenter Fryslan AS
31.186.168.0/21 16265 LeaseWeb AS Macro
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 /15:1368 /16:11550 /17:5664 /18:9400
/19:19169 /20:24755 /21:25154 /22:33526 /23:31949 /24:181971
/25:9 /26:17 /27:18 /28:145 /29:89 /30:45
/31:0 /32:88
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2267 3674 BellSouth.net Inc.
18566 1576 1597 Covad Communications Co.
6478 1525 1571 AT&T Services, Inc.
4323 1375 2565 tw telecom holdings, inc.
10620 1293 1403 Types of queries are: POCs, o
11492 1273 1325 CABLE ONE, INC.
23456 1086 2013 32-bit ASN transition
7011 1063 1164 Frontier Communications of Am
1785 1056 1789 PaeTec Communications, Inc.
6503 993 1217 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 2:54 4:14 5:1 8:346 12:2019
13:1 14:412 15:15 16:3 17:8 20:9
23:3 24:1569 27:697 31:14 32:56 33:3
34:2 37:1 38:744 39:1 40:101 41:2366
44:3 46:750 47:4 49:142 50:117 52:13
55:4 56:2 57:27 58:768 59:493 60:385
61:1062 62:1003 63:1913 64:3852 65:2349 66:4353
67:1800 68:1060 69:2911 70:700 71:359 72:1900
73:1 74:2324 75:284 76:339 77:842 78:690
79:457 80:1086 81:826 82:515 83:466 84:647
85:1025 86:553 87:769 88:342 89:1566 90:176
91:3634 92:503 93:1046 94:1234 95:776 96:447
97:251 98:808 99:35 101:41 106:1 107:4
108:47 109:925 110:517 111:695 112:314 113:377
114:481 115:713 116:940 117:652 118:747 119:1085
120:278 121:728 122:1602 123:1044 124:1310 125:1255
128:213 129:165 130:167 131:560 132:101 133:20
134:208 135:49 136:209 137:139 138:299 139:110
140:462 141:173 142:363 143:382 144:474 145:52
146:431 147:192 148:615 149:260 150:159 151:187
152:296 153:180 154:2 155:389 156:182 157:318
158:131 159:370 160:313 161:198 162:277 163:155
164:493 165:348 166:500 167:412 168:716 169:154
170:772 171:70 172:2 173:1256 174:529 175:338
177:74 178:752 180:778 181:4 182:398 183:239
184:230 185:1 186:1106 187:901 188:918 189:1028
190:4742 192:5719 193:4775 194:3481 195:2939 196:1214
197:15 198:3533 199:3847 200:5553 201:1582 202:8157
203:8354 204:4038 205:2290 206:2546 207:2950 208:3903
209:3467 210:2652 211:1353 212:1967 213:1699 214:756
215:66 216:4856 217:1622 218:545 219:380 220:1186
221:458 222:311 223:100
End of report
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