Routing Table Report 04:00 +10GMT Thu 31 Mar, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 351848
Prefixes after maximum aggregation: 159689
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 173814
Total ASes present in the Internet Routing Table: 37115
Prefixes per ASN: 9.48
Origin-only ASes present in the Internet Routing Table: 31185
Origin ASes announcing only one prefix: 14993
Transit ASes present in the Internet Routing Table: 4996
Transit-only ASes present in the Internet Routing Table: 132
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 31
Max AS path prepend of ASN (36992) 29
Prefixes from unregistered ASNs in the Routing Table: 504
Unregistered ASNs in the Routing Table: 222
Number of 32-bit ASNs allocated by the RIRs: 1246
Number of 32-bit ASNs visible in the Routing Table: 934
Prefixes from 32-bit ASNs in the Routing Table: 2068
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 206
Number of addresses announced to Internet: 2392132640
Equivalent to 142 /8s, 149 /16s and 12 /24s
Percentage of available address space announced: 64.5
Percentage of allocated address space announced: 64.5
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 89.9
Total number of prefixes smaller than registry allocations: 145619
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 87841
Total APNIC prefixes after maximum aggregation: 29914
APNIC Deaggregation factor: 2.94
Prefixes being announced from the APNIC address blocks: 84749
Unique aggregates announced from the APNIC address blocks: 36675
APNIC Region origin ASes present in the Internet Routing Table: 4380
APNIC Prefixes per ASN: 19.35
APNIC Region origin ASes announcing only one prefix: 1209
APNIC Region transit ASes present in the Internet Routing Table: 693
Average APNIC Region AS path length visible: 4.4
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: 601380640
Equivalent to 35 /8s, 216 /16s and 87 /24s
Percentage of available APNIC address space announced: 76.3
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: 138683
Total ARIN prefixes after maximum aggregation: 70811
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 111156
Unique aggregates announced from the ARIN address blocks: 44994
ARIN Region origin ASes present in the Internet Routing Table: 14281
ARIN Prefixes per ASN: 7.78
ARIN Region origin ASes announcing only one prefix: 5440
ARIN Region transit ASes present in the Internet Routing Table: 1486
Average ARIN Region AS path length visible: 4.0
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: 797351424
Equivalent to 47 /8s, 134 /16s and 158 /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: 83077
Total RIPE prefixes after maximum aggregation: 47444
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 76377
Unique aggregates announced from the RIPE address blocks: 50128
RIPE Region origin ASes present in the Internet Routing Table: 15451
RIPE Prefixes per ASN: 4.94
RIPE Region origin ASes announcing only one prefix: 7776
RIPE Region transit ASes present in the Internet Routing Table: 2401
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: 690
Number of RIPE addresses announced to Internet: 465322240
Equivalent to 27 /8s, 188 /16s and 65 /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: 32289
Total LACNIC prefixes after maximum aggregation: 7377
LACNIC Deaggregation factor: 4.38
Prefixes being announced from the LACNIC address blocks: 31194
Unique aggregates announced from the LACNIC address blocks: 16256
LACNIC Region origin ASes present in the Internet Routing Table: 1441
LACNIC Prefixes per ASN: 21.65
LACNIC Region origin ASes announcing only one prefix: 436
LACNIC Region transit ASes present in the Internet Routing Table: 262
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: 183
Number of LACNIC addresses announced to Internet: 81557120
Equivalent to 4 /8s, 220 /16s and 118 /24s
Percentage of available LACNIC address space announced: 54.0
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: 7634
Total AfriNIC prefixes after maximum aggregation: 1818
AfriNIC Deaggregation factor: 4.20
Prefixes being announced from the AfriNIC address blocks: 6002
Unique aggregates announced from the AfriNIC address blocks: 1871
AfriNIC Region origin ASes present in the Internet Routing Table: 440
AfriNIC Prefixes per ASN: 13.64
AfriNIC Region origin ASes announcing only one prefix: 132
AfriNIC Region transit ASes present in the Internet Routing Table: 94
Average AfriNIC Region AS path length visible: 5.2
Max AfriNIC Region AS path length visible: 31
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 22669568
Equivalent to 1 /8s, 89 /16s and 233 /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 2415 9509 902 Korea Telecom (KIX)
7545 1544 301 84 TPG Internet Pty Ltd
4755 1482 649 158 TATA Communications formerly
17974 1463 480 33 PT TELEKOMUNIKASI INDONESIA
24560 1135 322 204 Bharti Airtel Ltd., Telemedia
9583 1055 77 494 Sify Limited
4808 1026 2096 294 CNCGROUP IP network: China169
9829 1006 869 51 BSNL National Internet Backbo
18101 934 116 139 Reliance Infocom Ltd Internet
17488 920 161 98 Hathway IP Over Cable Interne
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 261 bellsouth.net, inc.
4323 2562 1091 401 Time Warner Telecom
1785 1786 681 131 PaeTec Communications, Inc.
18566 1606 331 195 Covad Communications
6478 1584 303 40 AT&T Worldnet Services
20115 1527 1539 647 Charter Communications
19262 1489 4935 303 Verizon Global Networks
7018 1358 6675 884 AT&T WorldNet Services
11492 1325 240 15 Cable One
22773 1286 2864 79 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 514 1780 318 UPC Distribution Services
34984 473 96 198 BILISIM TELEKOM
3292 455 2013 392 TDC Tele Danmark
8866 444 133 25 Bulgarian Telecommunication C
9198 424 267 15 Kazakhtelecom Data Network Ad
20940 415 98 321 Akamai Technologies European
3320 413 7604 359 Deutsche Telekom AG
8551 403 353 46 Bezeq International
12479 398 577 6 Uni2 Autonomous System
702 394 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 1254 971 84 NET Servicos de Comunicao S.A
8151 1245 2671 369 UniNet S.A. de C.V.
6503 1116 354 73 AVANTEL, S.A.
7303 922 465 145 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
7738 479 922 30 Telecomunicacoes da Bahia 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 844 445 11 TEDATA
24863 774 147 39 LINKdotNET AS number
15475 421 90 8 Nile Online
36992 295 271 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 148 441 86 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 261 bellsouth.net, inc.
4323 2562 1091 401 Time Warner Telecom
4766 2415 9509 902 Korea Telecom (KIX)
23456 2068 494 1113 32-bit ASN transition
1785 1786 681 131 PaeTec Communications, Inc.
18566 1606 331 195 Covad Communications
6478 1584 303 40 AT&T Worldnet Services
7545 1544 301 84 TPG Internet Pty Ltd
20115 1527 1539 647 Charter Communications
19262 1489 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 2562 2161 Time Warner Telecom
1785 1786 1655 PaeTec Communications, Inc.
6478 1584 1544 AT&T Worldnet Services
4766 2415 1513 Korea Telecom (KIX)
7545 1544 1460 TPG Internet Pty Ltd
17974 1463 1430 PT TELEKOMUNIKASI INDONESIA
18566 1606 1411 Covad Communications
4755 1482 1324 TATA Communications formerly
11492 1325 1310 Cable One
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
31.41.128.0/21 39056 PB Anoxin
31.129.160.0/19 24872 Magnus ISP autonomous system
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
/13:448 /14:767 /15:1373 /16:11599 /17:5719 /18:9435
/19:19089 /20:24819 /21:25314 /22:33712 /23:32201 /24:183831
/25:1142 /26:1280 /27:714 /28:40 /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 1538 1584 AT&T Worldnet Services
4323 1375 2562 Time Warner Telecom
10620 1295 1405 TVCABLE BOGOTA
11492 1274 1325 Cable One
23456 1101 2068 32-bit ASN transition
7011 1064 1164 Citizens Utilities
1785 1056 1786 PaeTec Communications, Inc.
6503 900 1116 AVANTEL, S.A.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:294 2:55 4:14 5:1 8:347 12:2020
13:1 14:429 15:15 16:3 17:8 20:9
23:5 24:1596 27:702 31:29 32:60 33:3
34:2 37:1 38:748 39:1 40:101 41:2379
44:3 46:776 47:4 49:144 50:133 52:13
55:5 56:2 57:30 58:822 59:502 60:387
61:1173 62:1007 63:1917 64:3886 65:2355 66:4364
67:1804 68:1077 69:2925 70:697 71:343 72:1898
73:1 74:2333 75:284 76:336 77:851 78:694
79:448 80:1095 81:823 82:511 83:463 84:648
85:1030 86:554 87:761 88:344 89:1564 90:175
91:3653 92:510 93:1041 94:1230 95:778 96:456
97:251 98:812 99:35 101:49 106:1 107:4
108:80 109:927 110:514 111:682 112:332 113:385
114:517 115:717 116:932 117:675 118:754 119:1113
120:288 121:762 122:1610 123:1059 124:1310 125:1248
128:265 129:174 130:173 131:553 132:110 133:20
134:220 135:49 136:213 137:142 138:300 139:112
140:478 141:173 142:381 143:391 144:482 145:52
146:440 147:197 148:638 149:271 150:167 151:187
152:298 153:180 154:3 155:390 156:185 157:348
158:131 159:380 160:317 161:210 162:277 163:165
164:491 165:348 166:501 167:412 168:722 169:154
170:781 171:70 172:2 173:1257 174:531 175:351
177:73 178:766 180:797 181:4 182:411 183:201
184:232 185:1 186:1122 187:903 188:921 189:1037
190:4722 192:5773 193:4793 194:3487 195:2942 196:1211
197:15 198:3582 199:3885 200:5574 201:1486 202:8387
203:8458 204:4107 205:2316 206:2644 207:3022 208:3905
209:3497 210:2715 211:1364 212:1969 213:1712 214:760
215:66 216:4885 217:1639 218:552 219:382 220:1194
221:479 222:314 223:104
End of report
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