[SANOG] Weekly Routing Table Report
Routing Analysis Role Account
cscora at apnic.net
Fri Mar 23 18:58:56 UTC 2012
This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.
The posting is sent to APOPS, NANOG, AfNOG, AusNOG, SANOG, PacNOG, LacNOG,
TRNOG, CaribNOG and the RIPE Routing Working Group.
Daily listings are sent to bgp-stats at lists.apnic.net
For historical data, please see http://thyme.rand.apnic.net.
If you have any comments please contact Philip Smith <pfsinoz at gmail.com>.
Routing Table Report 04:00 +10GMT Sat 24 Mar, 2012
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 404075
Prefixes after maximum aggregation: 171377
Deaggregation factor: 2.36
Unique aggregates announced to Internet: 195407
Total ASes present in the Internet Routing Table: 40484
Prefixes per ASN: 9.98
Origin-only ASes present in the Internet Routing Table: 32928
Origin ASes announcing only one prefix: 15486
Transit ASes present in the Internet Routing Table: 5438
Transit-only ASes present in the Internet Routing Table: 143
Average AS path length visible in the Internet Routing Table: 4.4
Max AS path length visible: 32
Max AS path prepend of ASN (48687) 24
Prefixes from unregistered ASNs in the Routing Table: 454
Unregistered ASNs in the Routing Table: 221
Number of 32-bit ASNs allocated by the RIRs: 2330
Number of 32-bit ASNs visible in the Routing Table: 2118
Prefixes from 32-bit ASNs in the Routing Table: 5181
Special use prefixes present in the Routing Table: 2
Prefixes being announced from unallocated address space: 893
Number of addresses announced to Internet: 2527640720
Equivalent to 150 /8s, 168 /16s and 188 /24s
Percentage of available address space announced: 68.2
Percentage of allocated address space announced: 68.2
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 92.1
Total number of prefixes smaller than registry allocations: 172567
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 98560
Total APNIC prefixes after maximum aggregation: 32033
APNIC Deaggregation factor: 3.08
Prefixes being announced from the APNIC address blocks: 94960
Unique aggregates announced from the APNIC address blocks: 39434
APNIC Region origin ASes present in the Internet Routing Table: 4677
APNIC Prefixes per ASN: 20.30
APNIC Region origin ASes announcing only one prefix: 1235
APNIC Region transit ASes present in the Internet Routing Table: 731
Average APNIC Region AS path length visible: 4.6
Max APNIC Region AS path length visible: 18
Number of APNIC region 32-bit ASNs visible in the Routing Table: 167
Number of APNIC addresses announced to Internet: 641283424
Equivalent to 38 /8s, 57 /16s and 53 /24s
Percentage of available APNIC address space announced: 81.3
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: 150469
Total ARIN prefixes after maximum aggregation: 75801
ARIN Deaggregation factor: 1.99
Prefixes being announced from the ARIN address blocks: 121859
Unique aggregates announced from the ARIN address blocks: 49895
ARIN Region origin ASes present in the Internet Routing Table: 14936
ARIN Prefixes per ASN: 8.16
ARIN Region origin ASes announcing only one prefix: 5675
ARIN Region transit ASes present in the Internet Routing Table: 1576
Average ARIN Region AS path length visible: 4.0
Max ARIN Region AS path length visible: 22
Number of ARIN region 32-bit ASNs visible in the Routing Table: 16
Number of ARIN addresses announced to Internet: 805163776
Equivalent to 47 /8s, 253 /16s and 211 /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: 101472
Total RIPE prefixes after maximum aggregation: 53082
RIPE Deaggregation factor: 1.91
Prefixes being announced from the RIPE address blocks: 92826
Unique aggregates announced from the RIPE address blocks: 57160
RIPE Region origin ASes present in the Internet Routing Table: 16364
RIPE Prefixes per ASN: 5.67
RIPE Region origin ASes announcing only one prefix: 7977
RIPE Region transit ASes present in the Internet Routing Table: 2638
Average RIPE Region AS path length visible: 4.7
Max RIPE Region AS path length visible: 32
Number of RIPE region 32-bit ASNs visible in the Routing Table: 1437
Number of RIPE addresses announced to Internet: 502099720
Equivalent to 29 /8s, 237 /16s and 111 /24s
Percentage of available RIPE address space announced: 80.9
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: 39258
Total LACNIC prefixes after maximum aggregation: 8148
LACNIC Deaggregation factor: 4.82
Prefixes being announced from the LACNIC address blocks: 39012
Unique aggregates announced from the LACNIC address blocks: 19722
LACNIC Region origin ASes present in the Internet Routing Table: 1576
LACNIC Prefixes per ASN: 24.75
LACNIC Region origin ASes announcing only one prefix: 436
LACNIC Region transit ASes present in the Internet Routing Table: 295
Average LACNIC Region AS path length visible: 4.4
Max LACNIC Region AS path length visible: 17
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 494
Number of LACNIC addresses announced to Internet: 98599560
Equivalent to 5 /8s, 224 /16s and 130 /24s
Percentage of available LACNIC address space announced: 65.3
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: 8829
Total AfriNIC prefixes after maximum aggregation: 2122
AfriNIC Deaggregation factor: 4.16
Prefixes being announced from the AfriNIC address blocks: 6909
Unique aggregates announced from the AfriNIC address blocks: 2226
AfriNIC Region origin ASes present in the Internet Routing Table: 525
AfriNIC Prefixes per ASN: 13.16
AfriNIC Region origin ASes announcing only one prefix: 163
AfriNIC Region transit ASes present in the Internet Routing Table: 119
Average AfriNIC Region AS path length visible: 4.5
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: 31512064
Equivalent to 1 /8s, 224 /16s and 214 /24s
Percentage of available AfriNIC address space announced: 47.0
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 2491 11109 992 Korea Telecom (KIX)
17974 1758 503 64 PT TELEKOMUNIKASI INDONESIA
7545 1659 303 90 TPG Internet Pty Ltd
4755 1574 386 160 TATA Communications formerly
9583 1238 95 540 Sify Limited
9829 1207 1025 29 BSNL National Internet Backbo
7552 1167 1062 11 Vietel Corporation
4808 1097 2048 314 CNCGROUP IP network: China169
24560 1014 384 166 Bharti Airtel Ltd., Telemedia
18101 948 130 160 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
7029 3378 990 155 Windstream Communications Inc
6389 3372 3807 198 bellsouth.net, inc.
4323 2977 1060 385 Time Warner Telecom
18566 2093 383 179 Covad Communications
1785 1885 680 128 PaeTec Communications, Inc.
20115 1633 1558 628 Charter Communications
22773 1547 2910 111 Cox Communications, Inc.
30036 1402 253 744 Mediacom Communications Corp
7018 1279 9776 833 AT&T WorldNet Services
11492 1165 212 413 Cable One
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 1773 544 16 Corbina telecom
2118 1427 97 13 EUnet/RELCOM Autonomous Syste
15557 1034 2247 55 LDCOM NETWORKS
31148 672 37 9 FreeNet ISP
34984 666 188 174 BILISIM TELEKOM
12479 644 653 56 Uni2 Autonomous System
6830 641 1943 412 UPC Distribution Services
20940 632 203 488 Akamai Technologies European
8551 576 360 81 Bezeq International
3320 532 8442 398 Deutsche Telekom AG
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 1807 329 130 TVCABLE BOGOTA
28573 1729 1099 60 NET Servicos de Comunicao S.A
8151 1495 3017 354 UniNet S.A. de C.V.
7303 1351 826 190 Telecom Argentina Stet-France
26615 901 684 29 Tim Brasil S.A.
27947 687 69 111 Telconet S.A
11172 636 91 73 Servicios Alestra S.A de C.V
22047 584 326 15 VTR PUNTO NET S.A.
3816 561 238 98 Empresa Nacional de Telecomun
6503 559 418 65 AVANTEL, 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 1260 958 13 TEDATA
24863 844 274 37 LINKdotNET AS number
6713 489 649 18 Itissalat Al-MAGHRIB
3741 271 923 228 The Internet Solution
15706 227 32 6 Sudatel Internet Exchange Aut
12258 197 28 62 Vodacom Internet Company
24835 178 80 8 RAYA Telecom - Egypt
33776 158 12 20 Starcomms Nigeria Limited
36923 157 20 4 Swift Networks Limited
16637 156 647 81 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
7029 3378 990 155 Windstream Communications Inc
6389 3372 3807 198 bellsouth.net, inc.
4323 2977 1060 385 Time Warner Telecom
4766 2491 11109 992 Korea Telecom (KIX)
18566 2093 383 179 Covad Communications
1785 1885 680 128 PaeTec Communications, Inc.
10620 1807 329 130 TVCABLE BOGOTA
8402 1773 544 16 Corbina telecom
17974 1758 503 64 PT TELEKOMUNIKASI INDONESIA
28573 1729 1099 60 NET Servicos de Comunicao S.A
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
6389 3372 3174 bellsouth.net, inc.
4323 2977 2592 Time Warner Telecom
18566 2093 1914 Covad Communications
1785 1885 1757 PaeTec Communications, Inc.
8402 1773 1757 Corbina telecom
17974 1758 1694 PT TELEKOMUNIKASI INDONESIA
10620 1807 1677 TVCABLE BOGOTA
28573 1729 1669 NET Servicos de Comunicao S.A
7545 1659 1569 TPG Internet Pty Ltd
4766 2491 1499 Korea Telecom (KIX)
Complete listing at http://thyme.rand.apnic.net/current/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
54439 UNALLOCATED 8.25.174.0/24 3356 Level 3 Communicatio
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
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
14.192.0.0/22 45464 Room 201, TGU Bldg
14.192.4.0/22 45464 Room 201, TGU Bldg
14.192.8.0/22 45464 Room 201, TGU Bldg
14.192.12.0/22 45464 Room 201, TGU Bldg
14.192.16.0/22 45464 Room 201, TGU Bldg
14.192.20.0/22 45464 Room 201, TGU Bldg
14.192.24.0/22 45464 Room 201, TGU Bldg
14.192.28.0/22 45464 Room 201, TGU Bldg
23.27.0.0/20 54500 EGIHosting
23.27.16.0/20 54500 EGIHosting
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 /10:28 /11:81 /12:234
/13:458 /14:824 /15:1477 /16:12183 /17:6238 /18:10432
/19:20530 /20:28718 /21:29647 /22:40184 /23:37536 /24:211741
/25:1218 /26:1456 /27:797 /28:167 /29:59 /30:17
/31:0 /32:19
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
7029 3038 3378 Windstream Communications Inc
6389 2088 3372 bellsouth.net, inc.
18566 2042 2093 Covad Communications
4323 1808 2977 Time Warner Telecom
8402 1750 1773 Corbina telecom
10620 1704 1807 TVCABLE BOGOTA
30036 1350 1402 Mediacom Communications Corp
11492 1128 1165 Cable One
8452 1070 1260 TEDATA
1785 1066 1885 PaeTec Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:532 2:752 4:14 6:3 8:392 12:1973
13:1 14:600 15:12 16:3 17:7 20:8
23:147 24:1754 27:1244 31:936 32:62 33:2
34:2 36:8 37:295 38:781 40:120 41:3007
42:128 44:3 46:1453 47:3 49:342 50:625
52:13 54:6 55:11 56:3 57:37 58:960
59:493 60:278 61:1205 62:980 63:1992 64:4344
65:2276 66:4826 67:2007 68:1147 69:3185 70:903
71:437 72:1804 74:2705 75:491 76:320 77:965
78:982 79:502 80:1235 81:908 82:656 83:553
84:615 85:1191 86:723 87:915 88:343 89:1612
90:296 91:4632 92:519 93:1490 94:1454 95:1159
96:375 97:386 98:826 99:38 100:6 101:154
103:920 106:64 107:178 108:210 109:1551 110:754
111:900 112:444 113:558 114:630 115:767 116:908
117:730 118:908 119:1205 120:338 121:695 122:1661
123:1095 124:1363 125:1260 128:554 129:190 130:264
131:595 132:173 133:21 134:242 135:63 136:212
137:194 138:275 139:145 140:494 141:241 142:388
143:404 144:500 145:69 146:489 147:243 148:723
149:295 150:157 151:176 152:459 153:171 154:7
155:429 156:213 157:380 158:163 159:521 160:326
161:249 162:343 163:186 164:546 165:392 166:562
167:463 168:859 169:148 170:844 171:123 172:2
173:1836 174:734 175:434 176:461 177:591 178:1289
180:1125 181:73 182:769 183:277 184:441 185:1
186:2137 187:868 188:1147 189:1189 190:5547 192:5993
193:5595 194:4566 195:3640 196:1282 197:183 198:3620
199:4475 200:5767 201:1656 202:8463 203:8596 204:4353
205:2465 206:2804 207:2832 208:4050 209:3687 210:2757
211:1467 212:1965 213:1906 214:872 215:108 216:5091
217:1526 218:538 219:333 220:1230 221:552 222:325
223:326
End of report
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