* BGP Routing Table Analysis Reports *
Routing Table Report 04:00 +10GMT Fri 25 May, 2012
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 410981
Prefixes after maximum aggregation: 174203
Deaggregation factor: 2.36
Unique aggregates announced to Internet: 200157
Total ASes present in the Internet Routing Table: 41097
Prefixes per ASN: 10.00
Origin-only ASes present in the Internet Routing Table: 33225
Origin ASes announcing only one prefix: 15654
Transit ASes present in the Internet Routing Table: 5490
Transit-only ASes present in the Internet Routing Table: 137
Average AS path length visible in the Internet Routing Table: 4.5
Max AS path length visible: 30
Max AS path prepend of ASN ( 2115) 25
Prefixes from unregistered ASNs in the Routing Table: 377
Unregistered ASNs in the Routing Table: 134
Number of 32-bit ASNs allocated by the RIRs: 2691
Number of 32-bit ASNs visible in the Routing Table: 2382
Prefixes from 32-bit ASNs in the Routing Table: 6064
Special use prefixes present in the Routing Table: 2
Prefixes being announced from unallocated address space: 243
Number of addresses announced to Internet: 2553189296
Equivalent to 152 /8s, 46 /16s and 147 /24s
Percentage of available address space announced: 68.9
Percentage of allocated address space announced: 69.0
Percentage of available address space allocated: 99.9
Percentage of address space in use by end-sites: 92.6
Total number of prefixes smaller than registry allocations: 175090
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 100401
Total APNIC prefixes after maximum aggregation: 32403
APNIC Deaggregation factor: 3.10
Prefixes being announced from the APNIC address blocks: 96869
Unique aggregates announced from the APNIC address blocks: 40039
APNIC Region origin ASes present in the Internet Routing Table: 4690
APNIC Prefixes per ASN: 20.65
APNIC Region origin ASes announcing only one prefix: 1240
APNIC Region transit ASes present in the Internet Routing Table: 728
Average APNIC Region AS path length visible: 4.7
Max APNIC Region AS path length visible: 25
Number of APNIC region 32-bit ASNs visible in the Routing Table: 219
Number of APNIC addresses announced to Internet: 646571584
Equivalent to 38 /8s, 137 /16s and 230 /24s
Percentage of available APNIC address space announced: 82.0
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: 151592
Total ARIN prefixes after maximum aggregation: 76835
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 122000
Unique aggregates announced from the ARIN address blocks: 51031
ARIN Region origin ASes present in the Internet Routing Table: 15126
ARIN Prefixes per ASN: 8.07
ARIN Region origin ASes announcing only one prefix: 5745
ARIN Region transit ASes present in the Internet Routing Table: 1595
Average ARIN Region AS path length visible: 4.0
Max ARIN Region AS path length visible: 24
Number of ARIN region 32-bit ASNs visible in the Routing Table: 16
Number of ARIN addresses announced to Internet: 812270784
Equivalent to 48 /8s, 106 /16s and 68 /24s
Percentage of available ARIN address space announced: 64.8
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: 102363
Total RIPE prefixes after maximum aggregation: 54446
RIPE Deaggregation factor: 1.88
Prefixes being announced from the RIPE address blocks: 94315
Unique aggregates announced from the RIPE address blocks: 59139
RIPE Region origin ASes present in the Internet Routing Table: 16587
RIPE Prefixes per ASN: 5.69
RIPE Region origin ASes announcing only one prefix: 8059
RIPE Region transit ASes present in the Internet Routing Table: 2653
Average RIPE Region AS path length visible: 5.0
Max RIPE Region AS path length visible: 30
Number of RIPE region 32-bit ASNs visible in the Routing Table: 1582
Number of RIPE addresses announced to Internet: 513683848
Equivalent to 30 /8s, 158 /16s and 49 /24s
Percentage of available RIPE address space announced: 82.8
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: 41627
Total LACNIC prefixes after maximum aggregation: 8281
LACNIC Deaggregation factor: 5.03
Prefixes being announced from the LACNIC address blocks: 41723
Unique aggregates announced from the LACNIC address blocks: 20444
LACNIC Region origin ASes present in the Internet Routing Table: 1597
LACNIC Prefixes per ASN: 26.13
LACNIC Region origin ASes announcing only one prefix: 439
LACNIC Region transit ASes present in the Internet Routing Table: 309
Average LACNIC Region AS path length visible: 4.5
Max LACNIC Region AS path length visible: 21
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 560
Number of LACNIC addresses announced to Internet: 101335432
Equivalent to 6 /8s, 10 /16s and 65 /24s
Percentage of available LACNIC address space announced: 67.1
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: 8745
Total AfriNIC prefixes after maximum aggregation: 2174
AfriNIC Deaggregation factor: 4.02
Prefixes being announced from the AfriNIC address blocks: 6820
Unique aggregates announced from the AfriNIC address blocks: 2209
AfriNIC Region origin ASes present in the Internet Routing Table: 542
AfriNIC Prefixes per ASN: 12.58
AfriNIC Region origin ASes announcing only one prefix: 171
AfriNIC Region transit ASes present in the Internet Routing Table: 121
Average AfriNIC Region AS path length visible: 4.7
Max AfriNIC Region AS path length visible: 25
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 31739392
Equivalent to 1 /8s, 228 /16s and 78 /24s
Percentage of available AfriNIC address space announced: 47.3
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 2638 11114 1123 Korea Telecom (KIX)
17974 1924 530 80 PT TELEKOMUNIKASI INDONESIA
7545 1671 301 87 TPG Internet Pty Ltd
4755 1577 385 155 TATA Communications formerly
9829 1298 1085 28 BSNL National Internet Backbo
7552 1175 1062 11 Vietel Corporation
9583 1156 87 503 Sify Limited
4808 1104 2050 317 CNCGROUP IP network: China169
24560 1027 385 167 Bharti Airtel Ltd., Telemedia
9498 964 291 64 BHARTI Airtel Ltd.
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 3413 3807 193 bellsouth.net, inc.
7029 3334 986 159 Windstream Communications Inc
18566 2095 382 178 Covad Communications
1785 1908 681 131 PaeTec Communications, Inc.
20115 1637 1565 617 Charter Communications
22773 1608 2911 121 Cox Communications, Inc.
4323 1566 1040 379 Time Warner Telecom
30036 1409 261 753 Mediacom Communications Corp
7018 1223 10031 820 AT&T WorldNet Services
7011 1188 317 681 Citizens Utilities
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 1761 544 16 Corbina telecom
2118 1312 97 14 EUnet/RELCOM Autonomous Syste
34984 697 188 172 BILISIM TELEKOM
12479 690 677 71 Uni2 Autonomous System
31148 684 37 9 FreeNet ISP
6830 655 2215 426 UPC Distribution Services
20940 655 216 511 Akamai Technologies European
8551 567 360 80 Bezeq International
3320 486 8442 402 Deutsche Telekom AG
3292 471 2108 407 TDC Tele Danmark
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 1916 340 203 TVCABLE BOGOTA
28573 1866 1171 59 NET Servicos de Comunicao S.A
6503 1540 418 66 AVANTEL, S.A.
8151 1483 3038 338 UniNet S.A. de C.V.
7303 1435 901 191 Telecom Argentina Stet-France
26615 902 760 32 Tim Brasil S.A.
27947 688 73 95 Telconet S.A
11172 642 91 73 Servicios Alestra S.A de C.V
22047 582 326 15 VTR PUNTO NET S.A.
3816 580 246 94 Empresa Nacional de Telecomun
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 961 957 12 TEDATA
24863 668 274 35 LINKdotNET AS number
6713 496 649 18 Itissalat Al-MAGHRIB
24835 321 80 8 RAYA Telecom - Egypt
3741 262 905 223 The Internet Solution
12258 197 28 62 Vodacom Internet Company
33776 192 12 21 Starcomms Nigeria Limited
16637 171 666 83 MTN Network Solutions
15706 164 32 6 Sudatel Internet Exchange Aut
29571 157 15 16 Ci Telecom Autonomous system
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 3413 3807 193 bellsouth.net, inc.
7029 3334 986 159 Windstream Communications Inc
4766 2638 11114 1123 Korea Telecom (KIX)
18566 2095 382 178 Covad Communications
17974 1924 530 80 PT TELEKOMUNIKASI INDONESIA
10620 1916 340 203 TVCABLE BOGOTA
1785 1908 681 131 PaeTec Communications, Inc.
28573 1866 1171 59 NET Servicos de Comunicao S.A
8402 1761 544 16 Corbina telecom
7545 1671 301 87 TPG Internet Pty Ltd
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 3334 3175 Windstream Communications Inc
18566 2095 1917 Covad Communications
17974 1924 1844 PT TELEKOMUNIKASI INDONESIA
28573 1866 1807 NET Servicos de Comunicao S.A
1785 1908 1777 PaeTec Communications, Inc.
8402 1761 1745 Corbina telecom
10620 1916 1713 TVCABLE BOGOTA
7545 1671 1584 TPG Internet Pty Ltd
4766 2638 1515 Korea Telecom (KIX)
22773 1608 1487 Cox Communications, Inc.
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
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
32873 UNALLOCATED 12.46.102.0/24 10912 InterNAP Network Ser
14764 UNALLOCATED 12.108.237.0/24 7018 AT&T WorldNet Servic
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
128.0.24.0/24 12654 RIPE NCC RIS Project
Complete listing at http://thyme.rand.apnic.net/current/data-dsua
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
5.23.0.0/19 6453 Teleglobe Inc.
5.23.32.0/24 20836 CDLAN Autonomus System
5.23.40.0/21 13193 Nerim -- xDSL Internet Provid
5.23.64.0/19 44432 Backbone ehf
5.23.96.0/21 8636 Autonomous System for
5.23.112.0/22 48944 Khalij Ettela Resan Jonoub LT
5.23.112.0/21 48944 Khalij Ettela Resan Jonoub LT
5.23.116.0/22 48944 Khalij Ettela Resan Jonoub LT
5.23.120.0/21 8678 Ankara Universitesi Rektorlug
5.28.0.0/21 12303 CADRUS 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 /9:12 /10:29 /11:81 /12:235
/13:462 /14:832 /15:1503 /16:12285 /17:6301 /18:10590
/19:20770 /20:29473 /21:30812 /22:40331 /23:38310 /24:215152
/25:1229 /26:1455 /27:823 /28:170 /29:68 /30:17
/31:0 /32:22
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
7029 2994 3334 Windstream Communications Inc
6389 2132 3413 bellsouth.net, inc.
18566 2044 2095 Covad Communications
8402 1739 1761 Corbina telecom
10620 1734 1916 TVCABLE BOGOTA
30036 1350 1409 Mediacom Communications Corp
6503 1293 1540 AVANTEL, S.A.
11492 1149 1186 Cable One
7011 1073 1188 Citizens Utilities
1785 1065 1908 PaeTec Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:547 2:754 4:13 5:35 6:3 8:420
12:2007 13:1 14:619 15:12 16:3 17:5
20:23 23:167 24:1772 27:1295 31:1024 32:57
33:2 34:2 36:8 37:623 38:806 40:121
41:2882 42:137 44:3 46:1418 47:3 49:405
50:546 52:13 54:11 55:9 56:3 57:33
58:961 59:487 60:254 61:1229 62:995 63:2035
64:4234 65:2244 66:4480 67:2014 68:1161 69:3200
70:930 71:494 72:1837 74:2623 75:492 76:325
77:954 78:980 79:490 80:1221 81:935 82:662
83:543 84:489 85:1222 86:439 87:907 88:340
89:1711 90:289 91:4848 92:548 93:1368 94:1517
95:1169 96:368 97:313 98:864 99:38 100:7
101:194 103:1103 106:104 107:184 108:306 109:1342
110:767 111:921 112:409 113:600 114:626 115:838
116:939 117:724 118:908 119:1232 120:294 121:698
122:1664 123:1104 124:1382 125:1254 128:554 129:195
130:251 131:630 132:287 133:22 134:248 135:62
136:215 137:240 138:359 139:183 140:495 141:244
142:416 143:556 144:535 145:70 146:510 147:285
148:775 149:298 150:196 151:177 152:468 153:172
154:12 155:401 156:223 157:382 158:186 159:556
160:340 161:264 162:345 163:188 164:604 165:397
166:593 167:466 168:862 169:126 170:869 171:131
172:4 173:1746 174:604 175:431 176:586 177:801
178:1378 180:1219 181:83 182:1004 183:307 184:496
185:1 186:2300 187:1095 188:1278 189:1801 190:5532
192:6003 193:5559 194:4524 195:3421 196:1212 197:148
198:3659 199:4641 200:5845 201:1943 202:8596 203:8607
204:4341 205:2550 206:2764 207:2803 208:4082 209:3624
210:2761 211:1519 212:2027 213:1942 214:865 215:103
216:5098 217:1538 218:543 219:314 220:1235 221:556
222:325 223:358
End of report
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