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.

Monday, April 8, 2013

[bgp-stats] Routing Table Report - Japan view

* BGP Routing Table Analysis Reports *
Routing Table Report 04:00 +10GMT Tue 09 Apr, 2013

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

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

BGP routing table entries examined: 449268
Prefixes after maximum aggregation: 184016
Deaggregation factor: 2.44
Unique aggregates announced to Internet: 221907
Total ASes present in the Internet Routing Table: 43766
Prefixes per ASN: 10.27
Origin-only ASes present in the Internet Routing Table: 34422
Origin ASes announcing only one prefix: 16061
Transit ASes present in the Internet Routing Table: 5798
Transit-only ASes present in the Internet Routing Table: 139
Average AS path length visible in the Internet Routing Table: 4.7
Max AS path length visible: 29
Max AS path prepend of ASN ( 28730) 25
Prefixes from unregistered ASNs in the Routing Table: 366
Unregistered ASNs in the Routing Table: 135
Number of 32-bit ASNs allocated by the RIRs: 4701
Number of 32-bit ASNs visible in the Routing Table: 3546
Prefixes from 32-bit ASNs in the Routing Table: 10341
Special use prefixes present in the Routing Table: 18
Prefixes being announced from unallocated address space: 213
Number of addresses announced to Internet: 2628589676
Equivalent to 156 /8s, 173 /16s and 24 /24s
Percentage of available address space announced: 71.0
Percentage of allocated address space announced: 71.0
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 94.4
Total number of prefixes smaller than registry allocations: 158916

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

Prefixes being announced by APNIC Region ASes: 107931
Total APNIC prefixes after maximum aggregation: 33307
APNIC Deaggregation factor: 3.24
Prefixes being announced from the APNIC address blocks: 109138
Unique aggregates announced from the APNIC address blocks: 44451
APNIC Region origin ASes present in the Internet Routing Table: 4818
APNIC Prefixes per ASN: 22.65
APNIC Region origin ASes announcing only one prefix: 1223
APNIC Region transit ASes present in the Internet Routing Table: 818
Average APNIC Region AS path length visible: 4.8
Max APNIC Region AS path length visible: 21
Number of APNIC region 32-bit ASNs visible in the Routing Table: 488
Number of APNIC addresses announced to Internet: 720628448
Equivalent to 42 /8s, 243 /16s and 234 /24s
Percentage of available APNIC address space announced: 84.2

APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319,
58368-59391, 131072-133119
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, 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: 157492
Total ARIN prefixes after maximum aggregation: 79492
ARIN Deaggregation factor: 1.98
Prefixes being announced from the ARIN address blocks: 158192
Unique aggregates announced from the ARIN address blocks: 72404
ARIN Region origin ASes present in the Internet Routing Table: 15608
ARIN Prefixes per ASN: 10.14
ARIN Region origin ASes announcing only one prefix: 5936
ARIN Region transit ASes present in the Internet Routing Table: 1612
Average ARIN Region AS path length visible: 4.1
Max ARIN Region AS path length visible: 27
Number of ARIN region 32-bit ASNs visible in the Routing Table: 18
Number of ARIN addresses announced to Internet: 1078867840
Equivalent to 64 /8s, 78 /16s and 55 /24s
Percentage of available ARIN address space announced: 57.1

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, 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: 115691
Total RIPE prefixes after maximum aggregation: 59357
RIPE Deaggregation factor: 1.95
Prefixes being announced from the RIPE address blocks: 119450
Unique aggregates announced from the RIPE address blocks: 76976
RIPE Region origin ASes present in the Internet Routing Table: 17132
RIPE Prefixes per ASN: 6.97
RIPE Region origin ASes announcing only one prefix: 8159
RIPE Region transit ASes present in the Internet Routing Table: 2803
Average RIPE Region AS path length visible: 5.1
Max RIPE Region AS path length visible: 29
Number of RIPE region 32-bit ASNs visible in the Routing Table: 2279
Number of RIPE addresses announced to Internet: 656083172
Equivalent to 39 /8s, 27 /16s and 8 /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, 196608-199679
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: 47636
Total LACNIC prefixes after maximum aggregation: 9322
LACNIC Deaggregation factor: 5.11
Prefixes being announced from the LACNIC address blocks: 51631
Unique aggregates announced from the LACNIC address blocks: 24024
LACNIC Region origin ASes present in the Internet Routing Table: 1882
LACNIC Prefixes per ASN: 27.43
LACNIC Region origin ASes announcing only one prefix: 556
LACNIC Region transit ASes present in the Internet Routing Table: 351
Average LACNIC Region AS path length visible: 4.9
Max LACNIC Region AS path length visible: 29
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 754
Number of LACNIC addresses announced to Internet: 126380840
Equivalent to 7 /8s, 136 /16s and 107 /24s
Percentage of available LACNIC address space announced: 75.3

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,
191/8, 200/8, 201/8,

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

Prefixes being announced by AfriNIC Region ASes: 10046
Total AfriNIC prefixes after maximum aggregation: 2490
AfriNIC Deaggregation factor: 4.03
Prefixes being announced from the AfriNIC address blocks: 10644
Unique aggregates announced from the AfriNIC address blocks: 3854
AfriNIC Region origin ASes present in the Internet Routing Table: 613
AfriNIC Prefixes per ASN: 17.36
AfriNIC Region origin ASes announcing only one prefix: 187
AfriNIC Region transit ASes present in the Internet Routing Table: 129
Average AfriNIC Region AS path length visible: 4.8
Max AfriNIC Region AS path length visible: 25
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 7
Number of AfriNIC addresses announced to Internet: 46255104
Equivalent to 2 /8s, 193 /16s and 204 /24s
Percentage of available AfriNIC address space announced: 46.0

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 2956 11558 924 Korea Telecom (KIX)
17974 2510 840 86 PT TELEKOMUNIKASI INDONESIA
7545 1863 302 95 TPG Internet Pty Ltd
4755 1732 392 198 TATA Communications formerly
9829 1490 1205 40 BSNL National Internet Backbo
9583 1279 97 536 Sify Limited
7552 1137 1066 12 Vietel Corporation
4808 1121 2109 325 CNCGROUP IP network: China169
9498 1067 310 73 BHARTI Airtel Ltd.
24560 1067 385 164 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 3038 3694 88 bellsouth.net, inc.
7029 2152 1265 212 Windstream Communications Inc
18566 2068 382 184 Covad Communications
22773 2011 2929 125 Cox Communications, Inc.
1785 1973 677 123 PaeTec Communications, Inc.
20115 1668 1610 610 Charter Communications
4323 1606 1138 397 Time Warner Telecom
30036 1339 296 658 Mediacom Communications Corp
7018 1317 10808 858 AT&T WorldNet Services
11492 1216 223 331 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 1885 544 16 Corbina telecom
34984 1133 234 207 BILISIM TELEKOM
2118 1116 97 13 EUnet/RELCOM Autonomous Syste
12479 845 786 66 Uni2 Autonomous System
13188 837 99 33 Educational Network
20940 812 283 645 Akamai Technologies European
31148 791 41 20 FreeNet ISP
8551 745 370 43 Bezeq International
6830 734 2314 435 UPC Distribution Services
58113 666 74 386 LIR DATACENTER TELECOM SRL

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 2563 1418 95 NET Servicos de Comunicao S.A
10620 2359 409 222 TVCABLE BOGOTA
7303 1673 1152 210 Telecom Argentina Stet-France
8151 1225 2666 400 UniNet S.A. de C.V.
6503 1183 435 67 AVANTEL, S.A.
14754 1138 153 37 Telgua S. A.
18881 850 716 18 Global Village Telecom
27947 805 87 93 Telconet S.A
11830 725 364 14 Instituto Costarricense de El
3816 695 306 85 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
36998 1137 80 4 MOBITEL
24863 651 274 35 LINKdotNET AS number
6713 541 617 25 Itissalat Al-MAGHRIB
8452 360 956 9 TEDATA
24835 276 80 8 RAYA Telecom - Egypt
3741 262 906 220 The Internet Solution
12258 193 28 67 Vodacom Internet Company
29975 191 667 21 Vodacom
16637 187 698 88 MTN Network Solutions
33776 182 12 19 Starcomms Nigeria Limited

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 3038 3694 88 bellsouth.net, inc.
4766 2956 11558 924 Korea Telecom (KIX)
28573 2563 1418 95 NET Servicos de Comunicao S.A
17974 2510 840 86 PT TELEKOMUNIKASI INDONESIA
10620 2359 409 222 TVCABLE BOGOTA
7029 2152 1265 212 Windstream Communications Inc
18566 2068 382 184 Covad Communications
22773 2011 2929 125 Cox Communications, Inc.
1785 1973 677 123 PaeTec Communications, Inc.
8402 1885 544 16 Corbina telecom

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

Global Per AS Maximum Aggr summary
----------------------------------

ASN No of nets Net Savings Description
28573 2563 2468 NET Servicos de Comunicao S.A
17974 2510 2424 PT TELEKOMUNIKASI INDONESIA
10620 2359 2137 TVCABLE BOGOTA
4766 2956 2032 Korea Telecom (KIX)
7029 2152 1940 Windstream Communications Inc
22773 2011 1886 Cox Communications, Inc.
18566 2068 1884 Covad Communications
8402 1885 1869 Corbina telecom
1785 1973 1850 PaeTec Communications, Inc.
7545 1863 1768 TPG Internet Pty Ltd

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
30031 UNALLOCATED 12.27.122.0/24 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 12.45.103.0/24 209 Qwest
17300 UNALLOCATED 12.45.110.0/24 701 UUNET Technologies,
16476 UNALLOCATED 12.46.27.0/24 7018 AT&T WorldNet Servic
14764 UNALLOCATED 12.108.237.0/24 7018 AT&T WorldNet Servic
33649 UNALLOCATED 12.111.112.0/24 19029 New Edge Networks
26064 UNALLOCATED 12.149.37.0/24 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
128.0.0.0/24 2876 Jump Management SRL
128.0.16.0/21 43568 RIPE Network Coordination Cen
128.0.24.0/21 41794 Altline LLC
128.0.55.0/24 48571 SC efectRO SRL
128.0.58.0/23 9050 RTD-ROMTELECOM Autonomous Sys
128.0.72.0/21 23456 32-bit ASN transition
128.0.80.0/20 52041 Timer LTD
128.0.96.0/21 12886 LEWTelNet GmbH
128.0.104.0/23 51848 FOP Gabidullina Ludmila Nikol
128.0.106.0/24 23456 32-bit ASN transition

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

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

Network Origin AS Description
41.222.80.0/21 37110 Moztel LDA
62.61.220.0/24 24974 Tachyon Europe BV - Wireless
62.61.221.0/24 24974 Tachyon Europe BV - Wireless
64.185.224.0/24 27431 JTL Networks Inc.
64.185.225.0/24 27431 JTL Networks Inc.
64.185.226.0/24 27431 JTL Networks Inc.
64.185.227.0/24 27431 JTL Networks Inc.
64.185.228.0/24 27431 JTL Networks Inc.
64.185.229.0/24 27431 JTL Networks Inc.
64.185.230.0/24 27431 JTL Networks Inc.

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 /8:17 /9:13 /10:29 /11:88 /12:248
/13:485 /14:884 /15:1560 /16:12682 /17:6616 /18:10904
/19:21806 /20:31839 /21:33709 /22:46510 /23:41713 /24:236002
/25:1388 /26:1769 /27:861 /28:43 /29:65 /30:18
/31:0 /32:19

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

ASN No of nets Total ann. Description
18566 2019 2068 Covad Communications
6389 1742 3038 bellsouth.net, inc.
7029 1596 2152 Windstream Communications Inc
8402 1583 1885 Corbina telecom
22773 1316 2011 Cox Communications, Inc.
30036 1216 1339 Mediacom Communications Corp
11492 1178 1216 Cable One
36998 1131 1137 MOBITEL
1785 1045 1973 PaeTec Communications, Inc.
6983 929 1043 ITC^Deltacom

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

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

1:758 2:798 3:3 4:13 5:845 6:4
8:521 12:1919 13:3 14:770 15:11 16:3
17:9 20:19 23:255 24:1771 27:1440 31:1201
32:42 33:2 34:5 36:41 37:1674 38:862
39:2 40:164 41:2674 42:185 44:6 46:1776
47:2 49:614 50:679 52:12 54:29 55:10
57:27 58:1105 59:586 60:304 61:1448 62:999
63:2037 64:4287 65:2181 66:4281 67:2063 68:1123
69:3254 70:873 71:526 72:1889 74:2558 75:407
76:286 77:1089 78:1032 79:585 80:1253 81:973
82:614 83:573 84:572 85:1156 86:467 87:961
88:526 89:1791 90:281 91:5457 92:617 93:1704
94:1871 95:1578 96:503 97:340 98:1048 99:41
100:29 101:310 103:2392 105:488 106:126 107:207
108:514 109:1813 110:880 111:1045 112:499 113:771
114:691 115:1012 116:879 117:795 118:1008 119:1264
120:383 121:816 122:1731 123:1188 124:1333 125:1321
128:632 129:224 130:332 131:654 132:335 133:148
134:258 135:62 136:221 137:248 138:344 139:185
140:199 141:316 142:542 143:371 144:487 145:91
146:508 147:379 148:697 149:365 150:161 151:522
152:415 153:194 154:44 155:385 156:260 157:392
158:270 159:714 160:334 161:422 162:377 163:202
164:578 165:450 166:331 167:577 168:1013 169:133
170:1019 171:173 172:4 173:1593 174:580 175:444
176:1162 177:1878 178:2034 179:2 180:1385 181:303
182:1124 183:382 184:661 185:344 186:2423 187:1255
188:1992 189:1405 190:6642 192:6490 193:5657 194:4517
195:3465 196:1329 197:775 198:4318 199:5294 200:6013
201:2373 202:8859 203:8783 204:4507 205:2542 206:2803
207:2828 208:4062 209:3548 210:2919 211:1565 212:2014
213:1937 214:937 215:99 216:5194 217:1567 218:625
219:347 220:1271 221:545 222:315 223:444

End of report
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