Routing Table Report 04:00 +10GMT Sun 06 Nov, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 380648
Prefixes after maximum aggregation: 166607
Deaggregation factor: 2.28
Unique aggregates announced to Internet: 187113
Total ASes present in the Internet Routing Table: 39213
Prefixes per ASN: 9.71
Origin-only ASes present in the Internet Routing Table: 32367
Origin ASes announcing only one prefix: 15475
Transit ASes present in the Internet Routing Table: 5261
Transit-only ASes present in the Internet Routing Table: 133
Average AS path length visible in the Internet Routing Table: 4.4
Max AS path length visible: 33
Max AS path prepend of ASN (48687) 24
Prefixes from unregistered ASNs in the Routing Table: 1621
Unregistered ASNs in the Routing Table: 858
Number of 32-bit ASNs allocated by the RIRs: 1930
Number of 32-bit ASNs visible in the Routing Table: 1585
Prefixes from 32-bit ASNs in the Routing Table: 3667
Special use prefixes present in the Routing Table: 3
Prefixes being announced from unallocated address space: 86
Number of addresses announced to Internet: 2489604416
Equivalent to 148 /8s, 100 /16s and 89 /24s
Percentage of available address space announced: 67.2
Percentage of allocated address space announced: 67.2
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 91.6
Total number of prefixes smaller than registry allocations: 160654
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 94703
Total APNIC prefixes after maximum aggregation: 31104
APNIC Deaggregation factor: 3.04
Prefixes being announced from the APNIC address blocks: 91172
Unique aggregates announced from the APNIC address blocks: 38361
APNIC Region origin ASes present in the Internet Routing Table: 4600
APNIC Prefixes per ASN: 19.82
APNIC Region origin ASes announcing only one prefix: 1269
APNIC Region transit ASes present in the Internet Routing Table: 714
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 21
Number of APNIC region 32-bit ASNs visible in the Routing Table: 102
Number of APNIC addresses announced to Internet: 629607776
Equivalent to 37 /8s, 135 /16s and 13 /24s
Percentage of available APNIC address space announced: 79.8
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: 145912
Total ARIN prefixes after maximum aggregation: 74449
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 117845
Unique aggregates announced from the ARIN address blocks: 48364
ARIN Region origin ASes present in the Internet Routing Table: 14736
ARIN Prefixes per ASN: 8.00
ARIN Region origin ASes announcing only one prefix: 5640
ARIN Region transit ASes present in the Internet Routing Table: 1556
Average ARIN Region AS path length visible: 4.0
Max ARIN Region AS path length visible: 25
Number of ARIN region 32-bit ASNs visible in the Routing Table: 12
Number of ARIN addresses announced to Internet: 804690944
Equivalent to 47 /8s, 246 /16s and 156 /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: 91885
Total RIPE prefixes after maximum aggregation: 51042
RIPE Deaggregation factor: 1.80
Prefixes being announced from the RIPE address blocks: 84318
Unique aggregates announced from the RIPE address blocks: 54473
RIPE Region origin ASes present in the Internet Routing Table: 16082
RIPE Prefixes per ASN: 5.24
RIPE Region origin ASes announcing only one prefix: 7963
RIPE Region transit ASes present in the Internet Routing Table: 2530
Average RIPE Region AS path length visible: 4.7
Max RIPE Region AS path length visible: 33
Number of RIPE region 32-bit ASNs visible in the Routing Table: 1104
Number of RIPE addresses announced to Internet: 491654080
Equivalent to 29 /8s, 78 /16s and 11 /24s
Percentage of available RIPE address space announced: 79.2
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: 35722
Total LACNIC prefixes after maximum aggregation: 7916
LACNIC Deaggregation factor: 4.51
Prefixes being announced from the LACNIC address blocks: 35150
Unique aggregates announced from the LACNIC address blocks: 18472
LACNIC Region origin ASes present in the Internet Routing Table: 1538
LACNIC Prefixes per ASN: 22.85
LACNIC Region origin ASes announcing only one prefix: 444
LACNIC Region transit ASes present in the Internet Routing Table: 282
Average LACNIC Region AS path length visible: 4.5
Max LACNIC Region AS path length visible: 19
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 363
Number of LACNIC addresses announced to Internet: 92801408
Equivalent to 5 /8s, 136 /16s and 9 /24s
Percentage of available LACNIC address space announced: 61.5
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: 8575
Total AfriNIC prefixes after maximum aggregation: 2020
AfriNIC Deaggregation factor: 4.25
Prefixes being announced from the AfriNIC address blocks: 6643
Unique aggregates announced from the AfriNIC address blocks: 1991
AfriNIC Region origin ASes present in the Internet Routing Table: 495
AfriNIC Prefixes per ASN: 13.42
AfriNIC Region origin ASes announcing only one prefix: 159
AfriNIC Region transit ASes present in the Internet Routing Table: 108
Average AfriNIC Region AS path length visible: 4.6
Max AfriNIC Region AS path length visible: 25
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 4
Number of AfriNIC addresses announced to Internet: 27581440
Equivalent to 1 /8s, 164 /16s and 220 /24s
Percentage of available AfriNIC address space announced: 41.1
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 2514 11129 974 Korea Telecom (KIX)
17974 1629 511 36 PT TELEKOMUNIKASI INDONESIA
7545 1613 303 86 TPG Internet Pty Ltd
4755 1543 637 174 TATA Communications formerly
7552 1394 1064 7 Vietel Corporation
9829 1166 989 28 BSNL National Internet Backbo
9583 1093 80 501 Sify Limited
4808 1090 2103 312 CNCGROUP IP network: China169
24560 964 343 218 Bharti Airtel Ltd., Telemedia
18101 955 135 150 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 3548 3815 221 bellsouth.net, inc.
7029 2338 1016 198 Windstream Communications Inc
18566 2094 383 177 Covad Communications
1785 1845 680 123 PaeTec Communications, Inc.
4323 1621 1077 387 Time Warner Telecom
20115 1596 1547 621 Charter Communications
22773 1488 2909 103 Cox Communications, Inc.
30036 1404 254 671 Mediacom Communications Corp
19262 1395 4728 400 Verizon Global Networks
7018 1316 7045 862 AT&T WorldNet Services
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
8402 1469 416 14 Corbina telecom
6830 650 1927 414 UPC Distribution Services
34984 596 110 184 BILISIM TELEKOM
20940 550 182 432 Akamai Technologies European
12479 547 628 51 Uni2 Autonomous System
3320 507 8169 387 Deutsche Telekom AG
3292 481 2074 406 TDC Tele Danmark
8866 462 133 26 Bulgarian Telecommunication C
31148 406 22 114 FreeNet ISP
8551 402 354 43 Bezeq International
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 1699 314 156 TVCABLE BOGOTA
28573 1482 1043 79 NET Servicos de Comunicao S.A
8151 1425 2937 350 UniNet S.A. de C.V.
7303 1235 750 170 Telecom Argentina Stet-France
27947 591 72 84 Telconet S.A
22047 580 322 17 VTR PUNTO NET S.A.
6503 565 434 68 AVANTEL, S.A.
7738 553 1050 31 Telecomunicacoes da Bahia S.A
3816 537 233 95 Empresa Nacional de Telecomun
11172 526 86 97 Servicios Alestra S.A de C.V
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
24863 801 146 36 LINKdotNET AS number
8452 652 446 12 TEDATA
15475 445 74 8 Nile Online
36992 284 415 19 Etisalat MISR
3741 281 939 230 The Internet Solution
15706 240 32 6 Sudatel Internet Exchange Aut
33776 239 13 8 Starcomms Nigeria Limited
6713 235 519 14 Itissalat Al-MAGHRIB
29571 218 17 13 Ci Telecom Autonomous system
12258 196 28 57 Vodacom Internet Company
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 3548 3815 221 bellsouth.net, inc.
4766 2514 11129 974 Korea Telecom (KIX)
7029 2338 1016 198 Windstream Communications Inc
18566 2094 383 177 Covad Communications
1785 1845 680 123 PaeTec Communications, Inc.
10620 1699 314 156 TVCABLE BOGOTA
17974 1629 511 36 PT TELEKOMUNIKASI INDONESIA
4323 1621 1077 387 Time Warner Telecom
7545 1613 303 86 TPG Internet Pty Ltd
20115 1596 1547 621 Charter Communications
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
7029 2338 2140 Windstream Communications Inc
18566 2094 1917 Covad Communications
1785 1845 1722 PaeTec Communications, Inc.
17974 1629 1593 PT TELEKOMUNIKASI INDONESIA
10620 1699 1543 TVCABLE BOGOTA
4766 2514 1540 Korea Telecom (KIX)
7545 1613 1527 TPG Internet Pty Ltd
8402 1469 1455 Corbina telecom
28573 1482 1403 NET Servicos de Comunicao S.A
7552 1394 1387 Vietel Corporation
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
32567 UNALLOCATED 12.25.107.0/24 4323 Time Warner Telecom
25639 UNALLOCATED 12.41.169.0/24 7018 AT&T WorldNet Servic
13317 UNALLOCATED 12.44.10.0/24 7018 AT&T WorldNet Servic
23502 UNALLOCATED 12.44.44.0/24 7018 AT&T WorldNet Servic
17300 UNALLOCATED 12.45.103.0/24 7018 AT&T WorldNet Servic
17300 UNALLOCATED 12.45.110.0/24 701 UUNET Technologies,
16476 UNALLOCATED 12.46.27.0/24 7018 AT&T WorldNet Servic
32873 UNALLOCATED 12.46.100.0/23 10912 InterNAP Network Ser
Complete listing at http://thyme.rand.apnic.net/current/data-badAS
Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------
Prefix Origin AS Description
128.0.0.0/21 12654 RIPE NCC RIS Project
128.0.0.0/16 12654 RIPE NCC RIS Project
128.0.24.0/24 12654 RIPE NCC RIS Project
Complete listing at http://thyme.rand.apnic.net/current/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 37345 MEDALLION Communications
41.223.92.0/22 36936 >>UNKNOWN<<
62.61.220.0/24 24974 Tachyon Europe BV - Wireless
62.61.221.0/24 24974 Tachyon Europe BV - Wireless
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 /9:12 /10:27 /11:81 /12:236
/13:465 /14:809 /15:1421 /16:12021 /17:6050 /18:10083
/19:19926 /20:27560 /21:27673 /22:37176 /23:35220 /24:198429
/25:1153 /26:1358 /27:758 /28:162 /29:4 /30:0
/31:0 /32:5
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2188 3548 bellsouth.net, inc.
18566 2043 2094 Covad Communications
7029 2006 2338 Windstream Communications Inc
10620 1594 1699 TVCABLE BOGOTA
8402 1444 1469 Corbina telecom
30036 1365 1404 Mediacom Communications Corp
11492 1117 1155 Cable One
1785 1057 1845 PaeTec Communications, Inc.
7011 1051 1169 Citizens Utilities
22773 950 1488 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:417 2:479 4:15 5:1 6:3 8:360
12:1956 13:1 14:540 15:11 16:3 17:7
20:9 23:58 24:1681 27:1025 31:672 32:65
33:2 34:2 36:4 38:754 40:110 41:2705
42:55 44:3 46:1021 47:3 49:298 50:445
52:13 55:9 56:2 57:47 58:901 59:496
60:362 61:1130 62:1094 63:1963 64:4059 65:2304
66:4277 67:2003 68:1164 69:3183 70:881 71:385
72:1803 74:2607 75:388 76:316 77:963 78:874
79:473 80:1131 81:844 82:520 83:528 84:621
85:1153 86:401 87:975 88:356 89:1594 90:237
91:4247 92:536 93:1540 94:1300 95:1095 96:428
97:286 98:935 99:37 101:226 103:433 106:8
107:84 108:72 109:1154 110:659 111:798 112:342
113:486 114:621 115:715 116:883 117:723 118:878
119:1272 120:344 121:693 122:1572 123:1012 124:1352
125:1355 128:244 129:189 130:164 131:626 132:150
133:21 134:221 135:54 136:211 137:142 138:286
139:122 140:483 141:317 142:389 143:410 144:476
145:64 146:465 147:221 148:636 149:267 150:171
151:194 152:447 153:178 154:7 155:385 156:208
157:360 158:154 159:486 160:333 161:214 162:371
163:173 164:511 165:369 166:540 167:441 168:809
169:145 170:877 171:88 172:4 173:1711 174:679
175:416 176:280 177:337 178:1084 180:1137 181:37
182:653 183:221 184:389 185:1 186:1311 187:783
188:1063 189:1126 190:5150 192:5924 193:5049 194:3558
195:3133 196:1266 197:167 198:3631 199:4202 200:5479
201:1669 202:8509 203:8474 204:4309 205:2367 206:2672
207:2819 208:4040 209:3581 210:2718 211:1457 212:2083
213:1780 214:814 215:95 216:4916 217:1600 218:564
219:342 220:1254 221:517 222:322 223:269
End of report