Routing Table Report 04:00 +10GMT Tue 05 Apr, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 351854
Prefixes after maximum aggregation: 159811
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 174147
Total ASes present in the Internet Routing Table: 37172
Prefixes per ASN: 9.47
Origin-only ASes present in the Internet Routing Table: 31204
Origin ASes announcing only one prefix: 15017
Transit ASes present in the Internet Routing Table: 5012
Transit-only ASes present in the Internet Routing Table: 135
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 24
Max AS path prepend of ASN (36992) 22
Prefixes from unregistered ASNs in the Routing Table: 526
Unregistered ASNs in the Routing Table: 231
Number of 32-bit ASNs allocated by the RIRs: 1259
Number of 32-bit ASNs visible in the Routing Table: 956
Prefixes from 32-bit ASNs in the Routing Table: 2121
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 189
Number of addresses announced to Internet: 2393519904
Equivalent to 142 /8s, 170 /16s and 55 /24s
Percentage of available address space announced: 64.6
Percentage of allocated address space announced: 64.6
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: 145817
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 87533
Total APNIC prefixes after maximum aggregation: 29898
APNIC Deaggregation factor: 2.93
Prefixes being announced from the APNIC address blocks: 84478
Unique aggregates announced from the APNIC address blocks: 36688
APNIC Region origin ASes present in the Internet Routing Table: 4383
APNIC Prefixes per ASN: 19.27
APNIC Region origin ASes announcing only one prefix: 1218
APNIC Region transit ASes present in the Internet Routing Table: 697
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 20
Number of APNIC region 32-bit ASNs visible in the Routing Table: 46
Number of APNIC addresses announced to Internet: 602221088
Equivalent to 35 /8s, 229 /16s and 42 /24s
Percentage of available APNIC address space announced: 76.4
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: 138673
Total ARIN prefixes after maximum aggregation: 70796
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 111165
Unique aggregates announced from the ARIN address blocks: 45016
ARIN Region origin ASes present in the Internet Routing Table: 14292
ARIN Prefixes per ASN: 7.78
ARIN Region origin ASes announcing only one prefix: 5456
ARIN Region transit ASes present in the Internet Routing Table: 1484
Average ARIN Region AS path length visible: 3.9
Max ARIN Region AS path length visible: 23
Number of ARIN region 32-bit ASNs visible in the Routing Table: 10
Number of ARIN addresses announced to Internet: 797513216
Equivalent to 47 /8s, 137 /16s and 22 /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: 83254
Total RIPE prefixes after maximum aggregation: 47516
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 76501
Unique aggregates announced from the RIPE address blocks: 50403
RIPE Region origin ASes present in the Internet Routing Table: 15469
RIPE Prefixes per ASN: 4.95
RIPE Region origin ASes announcing only one prefix: 7781
RIPE Region transit ASes present in the Internet Routing Table: 2409
Average RIPE Region AS path length visible: 4.6
Max RIPE Region AS path length visible: 23
Number of RIPE region 32-bit ASNs visible in the Routing Table: 706
Number of RIPE addresses announced to Internet: 465720576
Equivalent to 27 /8s, 194 /16s and 85 /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: 32369
Total LACNIC prefixes after maximum aggregation: 7401
LACNIC Deaggregation factor: 4.37
Prefixes being announced from the LACNIC address blocks: 31275
Unique aggregates announced from the LACNIC address blocks: 16256
LACNIC Region origin ASes present in the Internet Routing Table: 1439
LACNIC Prefixes per ASN: 21.73
LACNIC Region origin ASes announcing only one prefix: 429
LACNIC Region transit ASes present in the Internet Routing Table: 265
Average LACNIC Region AS path length visible: 4.4
Max LACNIC Region AS path length visible: 19
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 189
Number of LACNIC addresses announced to Internet: 81673088
Equivalent to 4 /8s, 222 /16s and 59 /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: 7641
Total AfriNIC prefixes after maximum aggregation: 1827
AfriNIC Deaggregation factor: 4.18
Prefixes being announced from the AfriNIC address blocks: 6033
Unique aggregates announced from the AfriNIC address blocks: 1876
AfriNIC Region origin ASes present in the Internet Routing Table: 442
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: 5.0
Max AfriNIC Region AS path length visible: 24
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 22705408
Equivalent to 1 /8s, 90 /16s and 117 /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 2439 9515 909 Korea Telecom (KIX)
7545 1544 301 83 TPG Internet Pty Ltd
17974 1446 480 33 PT TELEKOMUNIKASI INDONESIA
4755 1436 634 167 TATA Communications formerly
24560 1137 322 204 Bharti Airtel Ltd., Telemedia
4808 1061 2140 294 CNCGROUP IP network: China169
9583 1055 77 494 Sify Limited
9829 1001 867 54 BSNL National Internet Backbo
17488 941 162 97 Hathway IP Over Cable Interne
18101 935 116 139 Reliance Infocom Ltd Internet
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6389 3669 3838 257 bellsouth.net, inc.
4323 2538 1090 394 Time Warner Telecom
1785 1788 681 131 PaeTec Communications, Inc.
18566 1606 331 195 Covad Communications
6478 1596 304 47 AT&T Worldnet Services
20115 1535 1551 641 Charter Communications
19262 1490 4935 303 Verizon Global Networks
7018 1354 6769 880 AT&T WorldNet Services
11492 1327 240 15 Cable One
22773 1292 2865 84 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6830 515 1780 319 UPC Distribution Services
34984 484 97 186 BILISIM TELEKOM
3292 454 2013 391 TDC Tele Danmark
8866 446 134 26 Bulgarian Telecommunication C
20940 446 127 337 Akamai Technologies European
9198 415 267 15 Kazakhtelecom Data Network Ad
3320 413 7604 359 Deutsche Telekom AG
8551 403 353 46 Bezeq International
12479 400 577 6 Uni2 Autonomous System
702 395 1800 308 UUNET - Commercial IP service
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
10620 1405 262 152 TVCABLE BOGOTA
28573 1264 971 84 NET Servicos de Comunicao S.A
8151 1248 2680 372 UniNet S.A. de C.V.
6503 1117 354 72 AVANTEL, S.A.
7303 925 465 149 Telecom Argentina Stet-France
14420 642 52 91 CORPORACION NACIONAL DE TELEC
22047 567 310 15 VTR PUNTO NET S.A.
3816 515 225 98 Empresa Nacional de Telecomun
11172 486 83 79 Servicios Alestra S.A de C.V
27947 480 53 53 Telconet S.A
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8452 857 445 11 TEDATA
24863 775 147 39 LINKdotNET AS number
15475 421 90 8 Nile Online
36992 292 271 14 Etisalat MISR
3741 265 985 227 The Internet Solution
24835 233 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 146 441 85 MTN Network Solutions
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
6389 3669 3838 257 bellsouth.net, inc.
4323 2538 1090 394 Time Warner Telecom
4766 2439 9515 909 Korea Telecom (KIX)
23456 2121 505 1137 32-bit ASN transition
1785 1788 681 131 PaeTec Communications, Inc.
18566 1606 331 195 Covad Communications
6478 1596 304 47 AT&T Worldnet Services
7545 1544 301 83 TPG Internet Pty Ltd
20115 1535 1551 641 Charter Communications
19262 1490 4935 303 Verizon Global Networks
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 2538 2144 Time Warner Telecom
1785 1788 1657 PaeTec Communications, Inc.
6478 1596 1549 AT&T Worldnet Services
4766 2439 1530 Korea Telecom (KIX)
7545 1544 1461 TPG Internet Pty Ltd
17974 1446 1413 PT TELEKOMUNIKASI INDONESIA
18566 1606 1411 Covad Communications
11492 1327 1312 Cable One
4755 1436 1269 TATA Communications formerly
10620 1405 1253 TVCABLE BOGOTA
Complete listing at http://thyme.rand.apnic.net/current/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
15132 UNALLOCATED 12.9.150.0/24 7018 AT&T WorldNet Servic
32567 UNALLOCATED 12.14.170.0/24 4323 Time Warner Telecom
13746 UNALLOCATED 12.24.56.0/24 7018 AT&T WorldNet Servic
32567 UNALLOCATED 12.25.107.0/24 4323 Time Warner Telecom
26973 UNALLOCATED 12.39.152.0/24 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.154.0/23 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.155.0/24 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.159.0/24 7018 AT&T WorldNet Servic
25639 UNALLOCATED 12.41.169.0/24 7018 AT&T WorldNet Servic
13317 UNALLOCATED 12.44.10.0/24 7018 AT&T WorldNet Servic
Complete listing at http://thyme.rand.apnic.net/current/data-badAS
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
1.3.0.0/16 38639 NTT Communications Corporatio
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
31.171.240.0/20 50837 CLOUDSIGMA AG
41.57.192.0/18 22750 BCSNET
Complete listing at http://thyme.rand.apnic.net/current/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 /8:19 /9:11 /10:26 /11:74 /12:218
/13:447 /14:769 /15:1375 /16:11571 /17:5722 /18:9427
/19:19082 /20:24875 /21:25320 /22:33654 /23:32212 /24:183874
/25:1138 /26:1278 /27:706 /28:39 /29:9 /30:2
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2263 3669 bellsouth.net, inc.
18566 1585 1606 Covad Communications
6478 1550 1596 AT&T Worldnet Services
4323 1360 2538 Time Warner Telecom
10620 1295 1405 TVCABLE BOGOTA
11492 1276 1327 Cable One
23456 1113 2121 32-bit ASN transition
7011 1064 1164 Citizens Utilities
1785 1056 1788 PaeTec Communications, Inc.
6503 901 1117 AVANTEL, S.A.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:297 2:56 4:14 5:1 8:347 12:2017
13:1 14:430 15:15 16:3 17:8 20:9
23:5 24:1598 27:709 31:53 32:60 33:2
34:2 37:1 38:751 39:1 40:101 41:2389
42:1 44:3 46:793 47:4 49:148 50:141
52:13 55:4 56:2 57:30 58:841 59:486
60:387 61:1158 62:990 63:1915 64:3872 65:2334
66:4319 67:1810 68:1079 69:2944 70:701 71:343
72:1900 73:1 74:2327 75:285 76:336 77:851
78:701 79:453 80:1083 81:821 82:511 83:465
84:646 85:1039 86:556 87:761 88:340 89:1589
90:176 91:3639 92:507 93:1046 94:1239 95:790
96:459 97:253 98:818 99:35 101:49 106:1
107:4 108:80 109:929 110:528 111:680 112:324
113:389 114:509 115:681 116:926 117:675 118:763
119:1127 120:287 121:710 122:1615 123:1048 124:1274
125:1250 128:265 129:174 130:172 131:567 132:109
133:20 134:216 135:49 136:213 137:142 138:301
139:105 140:485 141:173 142:378 143:391 144:481
145:52 146:442 147:202 148:639 149:273 150:168
151:187 152:298 153:180 154:3 155:390 156:187
157:350 158:131 159:381 160:317 161:241 162:277
163:165 164:489 165:349 166:503 167:415 168:722
169:154 170:780 171:74 172:2 173:1260 174:531
175:351 177:70 178:803 180:802 181:4 182:416
183:200 184:237 185:1 186:1085 187:917 188:926
189:1038 190:4814 192:5766 193:4804 194:3467 195:2941
196:1200 197:16 198:3591 199:3882 200:5566 201:1487
202:8351 203:8451 204:4125 205:2318 206:2655 207:3023
208:3915 209:3505 210:2722 211:1363 212:1970 213:1713
214:731 215:66 216:4855 217:1629 218:559 219:374
220:1196 221:480 222:318 223:104
End of report
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