The Border Gateway Protocol (BGP) is the protocol backing the core routing decisions on the Internet. It maintains a table of IP networks or 'prefixes' which designate network reachability among autonomous systems (AS). It is described as a path vector protocol. BGP does not use traditional Interior Gateway Protocol (IGP) metrics, but makes routing decisions based on path, network policies and/or rulesets. For this reason, it is more appropriately termed a reachability protocol rather than routing protocol.

Tuesday, November 26, 2013

[bgp-stats] Routing Table Report - Japan view

* BGP Routing Table Analysis Reports *
Routing Table Report 0400 +10GMT 21 21 11, 2013

Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/

Analysis Summary
----------------

BGP routing table entries examined: 473224
Prefixes after maximum aggregation: 189451
Deaggregation factor: 2.50
Unique aggregates announced to Internet: 234734
Total ASes present in the Internet Routing Table: 41335
Prefixes per ASN: 11.45
Origin-only ASes present in the Internet Routing Table: 35372
Origin ASes announcing only one prefix: 16292
Transit ASes present in the Internet Routing Table: 5963
Transit-only ASes present in the Internet Routing Table: 163
Average AS path length visible in the Internet Routing Table: 4.6
Max AS path length visible: 103
Max AS path prepend of ASN ( 50404) 101
Prefixes from unregistered ASNs in the Routing Table: 921
Unregistered ASNs in the Routing Table: 276
Number of 32-bit ASNs allocated by the RIRs: 5399
Number of 32-bit ASNs visible in the Routing Table: 0
Prefixes from 32-bit ASNs in the Routing Table: 13131
Special use prefixes present in the Routing Table: 1
Prefixes being announced from unallocated address space: 1126
Number of addresses announced to Internet: 2653699932
Equivalent to 158 /8s, 44 /16s and 63 /24s
Percentage of available address space announced: 71.7
Percentage of allocated address space announced: 71.7
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 95.3
Total number of prefixes smaller than registry allocations: 165201

APNIC Region Analysis Summary
-----------------------------

Prefixes being announced by APNIC Region ASes: 111847
Total APNIC prefixes after maximum aggregation: 33986
APNIC Deaggregation factor: 3.29
Prefixes being announced from the APNIC address blocks: 114068
Unique aggregates announced from the APNIC address blocks: 47735
APNIC Region origin ASes present in the Internet Routing Table: 4880
APNIC Prefixes per ASN: 23.37
APNIC Region origin ASes announcing only one prefix: 1223
APNIC Region transit ASes present in the Internet Routing Table: 837
Average APNIC Region AS path length visible: 4.6
Max APNIC Region AS path length visible: 35
Number of APNIC region 32-bit ASNs visible in the Routing Table: 0
Number of APNIC addresses announced to Internet: 728687040
Equivalent to 43 /8s, 110 /16s and 225 /24s
Percentage of available APNIC address space announced: 85.2

APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319,
58368-59391, 63488-63999, 131072-133631
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, 150/8, 153/8,
163/8, 171/8, 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: 163111
Total ARIN prefixes after maximum aggregation: 81666
ARIN Deaggregation factor: 2.00
Prefixes being announced from the ARIN address blocks: 163896
Unique aggregates announced from the ARIN address blocks: 76148
ARIN Region origin ASes present in the Internet Routing Table: 15926
ARIN Prefixes per ASN: 10.29
ARIN Region origin ASes announcing only one prefix: 6001
ARIN Region transit ASes present in the Internet Routing Table: 1658
Average ARIN Region AS path length visible: 4.1
Max ARIN Region AS path length visible: 24
Number of ARIN region 32-bit ASNs visible in the Routing Table: 0
Number of ARIN addresses announced to Internet: 1073428864
Equivalent to 63 /8s, 251 /16s and 57 /24s
Percentage of available ARIN address space announced: 56.8

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, 62464-63487, 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, 128/8,
129/8, 130/8, 131/8, 132/8, 134/8, 135/8, 136/8,
137/8, 138/8, 139/8, 140/8, 142/8, 143/8, 144/8,
146/8, 147/8, 148/8, 149/8, 152/8, 155/8, 156/8,
157/8, 158/8, 159/8, 160/8, 161/8, 162/8, 164/8,
165/8, 166/8, 167/8, 168/8, 169/8, 170/8, 172/8,
173/8, 174/8, 184/8, 192/8, 198/8, 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: 119465
Total RIPE prefixes after maximum aggregation: 61037
RIPE Deaggregation factor: 1.96
Prefixes being announced from the RIPE address blocks: 123176
Unique aggregates announced from the RIPE address blocks: 78813
RIPE Region origin ASes present in the Internet Routing Table: 17525
RIPE Prefixes per ASN: 7.03
RIPE Region origin ASes announcing only one prefix: 8298
RIPE Region transit ASes present in the Internet Routing Table: 2837
Average RIPE Region AS path length visible: 5.1
Max RIPE Region AS path length visible: 103
Number of RIPE region 32-bit ASNs visible in the Routing Table: 0
Number of RIPE addresses announced to Internet: 656152036
Equivalent to 39 /8s, 28 /16s and 21 /24s
Percentage of available RIPE address space announced: 95.4

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
59392-61439, 61952-62463, 196608-200191
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,
141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8,
193/8, 194/8, 195/8, 212/8, 213/8, 217/8,

LACNIC Region Analysis Summary
------------------------------

Prefixes being announced by LACNIC Region ASes: 53213
Total LACNIC prefixes after maximum aggregation: 10005
LACNIC Deaggregation factor: 5.32
Prefixes being announced from the LACNIC address blocks: 58490
Unique aggregates announced from the LACNIC address blocks: 27091
LACNIC Region origin ASes present in the Internet Routing Table: 2045
LACNIC Prefixes per ASN: 28.60
LACNIC Region origin ASes announcing only one prefix: 557
LACNIC Region transit ASes present in the Internet Routing Table: 393
Average LACNIC Region AS path length visible: 4.9
Max LACNIC Region AS path length visible: 35
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 0
Number of LACNIC addresses announced to Internet: 143514168
Equivalent to 8 /8s, 141 /16s and 218 /24s
Percentage of available LACNIC address space announced: 85.5

LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
61440-61951, 262144-263679 plus ERX transfers
LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8,
191/8, 200/8, 201/8,

AfriNIC Region Analysis Summary
-------------------------------

Prefixes being announced by AfriNIC Region ASes: 11836
Total AfriNIC prefixes after maximum aggregation: 2596
AfriNIC Deaggregation factor: 4.56
Prefixes being announced from the AfriNIC address blocks: 12468
Unique aggregates announced from the AfriNIC address blocks: 4031
AfriNIC Region origin ASes present in the Internet Routing Table: 687
AfriNIC Prefixes per ASN: 18.15
AfriNIC Region origin ASes announcing only one prefix: 213
AfriNIC Region transit ASes present in the Internet Routing Table: 140
Average AfriNIC Region AS path length visible: 4.7
Max AfriNIC Region AS path length visible: 24
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 0
Number of AfriNIC addresses announced to Internet: 48057344
Equivalent to 2 /8s, 221 /16s and 76 /24s
Percentage of available AfriNIC address space announced: 47.7

AfriNIC AS Blocks 36864-37887, 327680-328703 & ERX transfers
AfriNIC Address Blocks 41/8, 102/8, 105/8, 154/8, 196/8, 197/8,

APNIC Region per AS prefix count summary
----------------------------------------

ASN No of nets /20 equiv MaxAgg Description
4766 2931 11557 940 Korea Telecom (KIX)
17974 2714 902 88 PT TELEKOMUNIKASI INDONESIA
7545 2111 319 111 TPG Internet Pty Ltd
4755 1792 392 190 TATA Communications formerly
9829 1544 1245 45 BSNL National Internet Backbo
9583 1246 95 509 Sify Limited
9498 1210 309 73 BHARTI Airtel Ltd.
7552 1165 1080 13 Vietel Corporation
4808 1146 2119 337 CNCGROUP IP network: China169
24560 1096 380 163 Bharti Airtel Ltd., Telemedia

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 3044 3688 53 BellSouth.net Inc.
22773 2202 2941 140 Cox Communications, Inc.
1785 2057 686 144 PaeTec Communications, Inc.
18566 2055 379 178 MegaPath Corporation
20115 1685 1655 600 Charter Communications
4323 1639 1098 419 Time Warner Telecom
701 1508 11146 783 MCI Communications Services,
30036 1384 312 581 Mediacom Communications Corp
7018 1334 17778 872 AT&T WorldNet Services
6983 1295 756 580 ITC^Deltacom

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 1962 544 16 OJSC "Vimpelcom"
34984 1367 244 223 TELLCOM ILETISIM HIZMETLERI A
20940 1143 425 864 Akamai Technologies European
31148 1009 45 19 FreeNet ISP
13188 895 99 48 TOV "Bank-Inform"
6849 870 363 39 JSC UKRTELECOM,
8551 785 370 41 Bezeq International
6830 774 2328 426 UPC Distribution Services
12479 679 797 57 Uni2 Autonomous System
35228 548 246 16 Avatar Broadband Limited

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
28573 3369 1793 87 NET Servicos de Comunicao S.A
10620 2666 432 219 Telmex Colombia S.A.
7303 1728 1150 231 Telecom Argentina Stet-France
18881 1635 908 20 Global Village Telecom
8151 1362 2855 415 UniNet S.A. de C.V.
11830 865 364 15 Instituto Costarricense de El
27947 846 93 90 Telconet S.A
6147 812 373 27 Telefonica Del Peru
6503 793 434 62 AVANTEL, S.A.
7738 780 1498 36 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
36998 1864 112 5 Sudanese Mobile Telephone (ZA
24863 889 338 26 LINKdotNET AS number
6713 554 633 26 Itissalat Al-MAGHRIB
8452 408 956 9 TEDATA
24835 297 144 9 RAYA Telecom - Egypt
3741 256 921 214 The Internet Solution
36992 228 501 29 Etisalat MISR
29571 224 17 12 Ci Telecom Autonomous system
15706 221 32 6 Sudatel Internet Exchange Aut
29975 192 668 21 Vodacom

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
28573 3369 1793 87 NET Servicos de Comunicao S.A
6389 3044 3688 53 BellSouth.net Inc.
4766 2931 11557 940 Korea Telecom (KIX)
17974 2714 902 88 PT TELEKOMUNIKASI INDONESIA
10620 2666 432 219 Telmex Colombia S.A.
22773 2202 2941 140 Cox Communications, Inc.
7545 2111 319 111 TPG Internet Pty Ltd
1785 2057 686 144 PaeTec Communications, Inc.
18566 2055 379 178 MegaPath Corporation
8402 1962 544 16 OJSC "Vimpelcom"

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 3044 2991 BellSouth.net Inc.
17974 2714 2626 PT TELEKOMUNIKASI INDONESIA
10620 2666 2447 Telmex Colombia S.A.
22773 2202 2062 Cox Communications, Inc.
7545 2111 2000 TPG Internet Pty Ltd
4766 2931 1991 Korea Telecom (KIX)
8402 1962 1946 OJSC "Vimpelcom"
1785 2057 1913 PaeTec Communications, Inc.
18566 2055 1877 MegaPath Corporation
36998 1864 1859 Sudanese Mobile Telephone (ZA

Complete listing at http://thyme.rand.apnic.net/current/data-CIDRnet

List of Unregistered Origin ASNs (Global)
-----------------------------------------

Bad AS Designation Network Transit AS Description
62828 UNALLOCATED 8.21.130.0/24 4323 Time Warner Telecom
62850 UNALLOCATED 8.25.147.0/24 3356 Level 3 Communicatio
62734 UNALLOCATED 8.31.128.0/24 6939 Hurricane Electric
62773 UNALLOCATED 8.35.180.0/22 3356 Level 3 Communicatio
65160 PRIVATE 12.1.58.0/24 17361 Sungard Trading Syst
65160 PRIVATE 12.1.59.0/24 17361 Sungard Trading Syst
15132 UNALLOCATED 12.9.150.0/24 7018 AT&T WorldNet Servic
62719 UNALLOCATED 12.27.130.0/24 4323 Time Warner Telecom
62861 UNALLOCATED 12.37.197.0/24 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

Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------

Prefix Origin AS Description
100.100.0.0/24 4847 China Networks Inter-Exchange

Complete listing at http://thyme.rand.apnic.net/current/data-dsua

Advertised Unallocated Addresses
--------------------------------

Network Origin AS Description
23.90.128.0/18 27418 OUTOFWALL INC.
23.91.0.0/19 40676 Psychz Networks
23.91.4.0/24 40676 Psychz Networks
23.91.14.0/24 40676 Psychz Networks
23.91.32.0/19 36315 Servpac Inc.
23.91.80.0/20 21560 Capital Technology Services G
23.91.96.0/20 37958 ChinaCache Networks ASN
23.91.112.0/21 32475 MidPhase Inc.
23.91.160.0/19 36493 3757277 Canada Inc. (oa 295.c
23.91.160.0/22 36493 3757277 Canada Inc. (oa 295.c

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 /8:16 /9:11 /10:31 /11:92 /12:253
/13:474 /14:922 /15:1625 /16:12826 /17:6761 /18:11339
/19:23091 /20:32915 /21:35633 /22:50003 /23:43890 /24:250851
/25:864 /26:993 /27:467 /28:51 /29:80 /30:22
/31:0 /32:14

Advertised prefixes smaller than registry allocations
-----------------------------------------------------

ASN No of nets Total ann. Description
18566 2009 2055 MegaPath Corporation
36998 1829 1864 Sudanese Mobile Telephone (ZA
6389 1701 3044 BellSouth.net Inc.
8402 1627 1962 OJSC "Vimpelcom"
22773 1459 2202 Cox Communications, Inc.
30036 1229 1384 Mediacom Communications Corp
11492 1195 1233 Cable One
1785 1095 2057 PaeTec Communications, Inc.
6983 1036 1295 ITC^Deltacom
22561 964 1241 Digital Teleport, Inc

Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos

Number of /24s announced per /8 block (Global)
----------------------------------------------

1:899 2:851 3:3 4:17 5:1028 6:21
8:621 12:1881 13:3 14:901 15:11 16:3
17:18 18:19 20:21 23:567 24:1741 27:1626
31:1508 32:45 33:2 34:5 36:87 37:1931
38:918 39:5 40:182 41:3320 42:289 44:14
46:2034 47:10 49:695 50:857 52:12 54:44
55:6 56:4 57:26 58:1168 59:576 60:379
61:1477 62:1248 63:1987 64:4331 65:2347 66:4160
67:2111 68:1096 69:3297 70:872 71:488 72:2045
74:2575 75:325 76:307 77:1164 78:1075 79:663
80:1273 81:1048 82:649 83:675 84:594 85:1238
86:374 87:1025 88:557 89:1563 90:152 91:5690
92:612 93:1607 94:2067 95:1562 96:513 97:348
98:1042 99:41 100:32 101:653 103:3642 105:527
106:141 107:219 108:533 109:1981 110:976 111:1118
112:594 113:812 114:750 115:1056 116:1007 117:833
118:1184 119:1273 120:337 121:752 122:1873 123:1264
124:1398 125:1438 128:680 129:230 130:353 131:651
132:364 133:158 134:558 135:72 136:284 137:250
138:349 139:297 140:197 141:330 142:545 143:417
144:496 145:90 146:531 147:414 148:778 149:369
150:138 151:649 152:412 153:205 154:52 155:499
156:295 157:421 158:281 159:781 160:360 161:458
162:862 163:247 164:622 165:592 166:263 167:636
168:1045 169:125 170:1119 171:184 172:27 173:1586
174:690 175:526 176:1335 177:2476 178:1865 179:299
180:1595 181:877 182:1378 183:451 184:629 185:1048
186:2644 187:1488 188:1868 189:1267 190:7316 192:7063
193:5438 194:4035 195:3370 196:1329 197:1033 198:4754
199:5489 200:6052 201:2519 202:8929 203:8896 204:4536
205:2638 206:2835 207:2834 208:3985 209:3655 210:3035
211:1567 212:2148 213:1997 214:903 215:91 216:5424
217:1692 218:628 219:320 220:1277 221:585 222:328
223:503

End of report
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