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.

Wednesday, February 20, 2013

[bgp-stats] Routing Table Report - Japan view

* BGP Routing Table Analysis Reports *
Routing Table Report 04:00 +10GMT Thu 21 Feb, 2013

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

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

BGP routing table entries examined: 443908
Prefixes after maximum aggregation: 182445
Deaggregation factor: 2.43
Unique aggregates announced to Internet: 217676
Total ASes present in the Internet Routing Table: 43360
Prefixes per ASN: 10.24
Origin-only ASes present in the Internet Routing Table: 34196
Origin ASes announcing only one prefix: 15936
Transit ASes present in the Internet Routing Table: 5767
Transit-only ASes present in the Internet Routing Table: 139
Average AS path length visible in the Internet Routing Table: 4.6
Max AS path length visible: 30
Max AS path prepend of ASN ( 28730) 25
Prefixes from unregistered ASNs in the Routing Table: 389
Unregistered ASNs in the Routing Table: 143
Number of 32-bit ASNs allocated by the RIRs: 3764
Number of 32-bit ASNs visible in the Routing Table: 3397
Prefixes from 32-bit ASNs in the Routing Table: 9362
Special use prefixes present in the Routing Table: 17
Prefixes being announced from unallocated address space: 190
Number of addresses announced to Internet: 2617049100
Equivalent to 155 /8s, 253 /16s and 0 /24s
Percentage of available address space announced: 70.7
Percentage of allocated address space announced: 70.7
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 94.3
Total number of prefixes smaller than registry allocations: 156758

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

Prefixes being announced by APNIC Region ASes: 106589
Total APNIC prefixes after maximum aggregation: 33103
APNIC Deaggregation factor: 3.22
Prefixes being announced from the APNIC address blocks: 107688
Unique aggregates announced from the APNIC address blocks: 43928
APNIC Region origin ASes present in the Internet Routing Table: 4817
APNIC Prefixes per ASN: 22.36
APNIC Region origin ASes announcing only one prefix: 1236
APNIC Region transit ASes present in the Internet Routing Table: 813
Average APNIC Region AS path length visible: 4.6
Max APNIC Region AS path length visible: 23
Number of APNIC region 32-bit ASNs visible in the Routing Table: 434
Number of APNIC addresses announced to Internet: 718715392
Equivalent to 42 /8s, 214 /16s and 186 /24s
Percentage of available APNIC address space announced: 84.0

APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319,
58368-59391, 131072-133119
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: 155867
Total ARIN prefixes after maximum aggregation: 78853
ARIN Deaggregation factor: 1.98
Prefixes being announced from the ARIN address blocks: 156483
Unique aggregates announced from the ARIN address blocks: 71148
ARIN Region origin ASes present in the Internet Routing Table: 15475
ARIN Prefixes per ASN: 10.11
ARIN Region origin ASes announcing only one prefix: 5845
ARIN Region transit ASes present in the Internet Routing Table: 1613
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: 1076219008
Equivalent to 64 /8s, 37 /16s and 204 /24s
Percentage of available ARIN address space announced: 56.9

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: 114085
Total RIPE prefixes after maximum aggregation: 58848
RIPE Deaggregation factor: 1.94
Prefixes being announced from the RIPE address blocks: 117314
Unique aggregates announced from the RIPE address blocks: 75074
RIPE Region origin ASes present in the Internet Routing Table: 17075
RIPE Prefixes per ASN: 6.87
RIPE Region origin ASes announcing only one prefix: 8150
RIPE Region transit ASes present in the Internet Routing Table: 2772
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: 2192
Number of RIPE addresses announced to Internet: 653551204
Equivalent to 38 /8s, 244 /16s and 102 /24s
Percentage of available RIPE address space announced: 95.0

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: 47242
Total LACNIC prefixes after maximum aggregation: 9132
LACNIC Deaggregation factor: 5.17
Prefixes being announced from the LACNIC address blocks: 51011
Unique aggregates announced from the LACNIC address blocks: 23605
LACNIC Region origin ASes present in the Internet Routing Table: 1821
LACNIC Prefixes per ASN: 28.01
LACNIC Region origin ASes announcing only one prefix: 524
LACNIC Region transit ASes present in the Internet Routing Table: 341
Average LACNIC Region AS path length visible: 4.8
Max LACNIC Region AS path length visible: 27
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 746
Number of LACNIC addresses announced to Internet: 123245096
Equivalent to 7 /8s, 88 /16s and 146 /24s
Percentage of available LACNIC address space announced: 73.5

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

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

Prefixes being announced by AfriNIC Region ASes: 10621
Total AfriNIC prefixes after maximum aggregation: 2453
AfriNIC Deaggregation factor: 4.33
Prefixes being announced from the AfriNIC address blocks: 11222
Unique aggregates announced from the AfriNIC address blocks: 3750
AfriNIC Region origin ASes present in the Internet Routing Table: 602
AfriNIC Prefixes per ASN: 18.64
AfriNIC Region origin ASes announcing only one prefix: 181
AfriNIC Region transit ASes present in the Internet Routing Table: 136
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: 44964352
Equivalent to 2 /8s, 174 /16s and 26 /24s
Percentage of available AfriNIC address space announced: 44.7

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 2938 11558 925 Korea Telecom (KIX)
17974 2494 824 85 PT TELEKOMUNIKASI INDONESIA
7545 1826 301 89 TPG Internet Pty Ltd
4755 1688 382 189 TATA Communications formerly
9829 1424 1140 43 BSNL National Internet Backbo
9583 1207 89 501 Sify Limited
7552 1161 1070 12 Vietel Corporation
4808 1116 2057 321 CNCGROUP IP network: China169
9498 1062 310 75 BHARTI Airtel Ltd.
24560 1047 385 160 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 3059 3695 98 bellsouth.net, inc.
7029 2166 1265 209 Windstream Communications Inc
18566 2080 382 185 Covad Communications
22773 1989 2931 128 Cox Communications, Inc.
1785 1960 677 125 PaeTec Communications, Inc.
20115 1693 1610 618 Charter Communications
4323 1604 1139 397 Time Warner Telecom
30036 1349 289 678 Mediacom Communications Corp
7018 1310 10553 862 AT&T WorldNet Services
7011 1204 314 686 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 1894 544 16 Corbina telecom
2118 1115 97 13 EUnet/RELCOM Autonomous Syste
34984 1056 232 204 BILISIM TELEKOM
13188 840 99 22 Educational Network
12479 830 783 68 Uni2 Autonomous System
31148 762 39 20 FreeNet ISP
20940 742 250 587 Akamai Technologies European
6830 712 2313 433 UPC Distribution Services
8551 712 367 39 Bezeq International
34744 681 185 39 SC GVM SISTEM 2003 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 2399 1328 86 NET Servicos de Comunicao S.A
10620 2319 397 223 TVCABLE BOGOTA
7303 1681 1147 207 Telecom Argentina Stet-France
8151 1506 2826 395 UniNet S.A. de C.V.
6503 1385 435 67 AVANTEL, S.A.
14754 940 128 76 Telgua S. A.
18881 778 716 18 Global Village Telecom
27947 776 86 98 Telconet S.A
3816 685 306 85 Empresa Nacional de Telecomun
7738 613 1242 34 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 1285 80 4 MOBITEL
24863 897 274 36 LINKdotNET AS number
6713 535 615 23 Itissalat Al-MAGHRIB
8452 529 958 13 TEDATA
24835 342 80 8 RAYA Telecom - Egypt
3741 266 906 224 The Internet Solution
12258 193 28 67 Vodacom Internet Company
15706 191 32 6 Sudatel Internet Exchange Aut
29975 191 667 21 Vodacom
16637 186 696 90 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
6389 3059 3695 98 bellsouth.net, inc.
4766 2938 11558 925 Korea Telecom (KIX)
17974 2494 824 85 PT TELEKOMUNIKASI INDONESIA
28573 2399 1328 86 NET Servicos de Comunicao S.A
10620 2319 397 223 TVCABLE BOGOTA
7029 2166 1265 209 Windstream Communications Inc
18566 2080 382 185 Covad Communications
22773 1989 2931 128 Cox Communications, Inc.
1785 1960 677 125 PaeTec Communications, Inc.
8402 1894 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
17974 2494 2409 PT TELEKOMUNIKASI INDONESIA
28573 2399 2313 NET Servicos de Comunicao S.A
10620 2319 2096 TVCABLE BOGOTA
4766 2938 2013 Korea Telecom (KIX)
7029 2166 1957 Windstream Communications Inc
18566 2080 1895 Covad Communications
8402 1894 1878 Corbina telecom
22773 1989 1861 Cox Communications, Inc.
1785 1960 1835 PaeTec Communications, Inc.
7545 1826 1737 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
128.0.60.0/23 57417 INTERNET TASMANIA SRL
128.0.62.0/23 57417 INTERNET TASMANIA SRL
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
62.12.96.0/19 38478 SunnyVision Limited
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.

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 /12:247
/13:483 /14:866 /15:1555 /16:12566 /17:6605 /18:11007
/19:21752 /20:31267 /21:33360 /22:45660 /23:41174 /24:232924
/25:1388 /26:1753 /27:859 /28:185 /29:74 /30:15
/31:0 /32:21

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

ASN No of nets Total ann. Description
18566 2030 2080 Covad Communications
6389 1757 3059 bellsouth.net, inc.
8402 1620 1894 Corbina telecom
7029 1554 2166 Windstream Communications Inc
22773 1304 1989 Cox Communications, Inc.
36998 1279 1285 MOBITEL
30036 1240 1349 Mediacom Communications Corp
11492 1160 1197 Cable One
1785 1039 1960 PaeTec Communications, Inc.
7011 959 1204 Citizens Utilities

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

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

1:689 2:783 3:3 4:13 5:750 6:3
8:499 12:1934 13:3 14:744 15:11 16:3
17:8 20:24 23:239 24:1800 27:1462 31:1133
32:54 33:2 34:5 36:11 37:1294 38:852
39:2 40:141 41:2695 42:178 44:4 46:1759
47:1 49:580 50:660 52:12 54:28 55:8
57:28 58:1078 59:558 60:259 61:1334 62:1025
63:2027 64:4302 65:2172 66:4252 67:2039 68:1124
69:3262 70:858 71:520 72:1875 74:2548 75:415
76:291 77:1090 78:1041 79:565 80:1221 81:969
82:627 83:541 84:556 85:1154 86:476 87:929
88:378 89:1743 90:281 91:5427 92:622 93:1732
94:2072 95:1599 96:506 97:336 98:1040 99:52
100:30 101:308 103:2142 105:519 106:133 107:206
108:512 109:1766 110:854 111:1017 112:489 113:735
114:686 115:928 116:875 117:797 118:981 119:1272
120:371 121:700 122:1728 123:1198 124:1319 125:1313
128:544 129:199 130:316 131:641 132:295 133:143
134:260 135:62 136:221 137:236 138:340 139:158
140:216 141:315 142:519 143:374 144:480 145:88
146:530 147:346 148:706 149:349 150:161 151:401
152:397 153:191 154:29 155:370 156:242 157:383
158:263 159:710 160:333 161:422 162:369 163:203
164:573 165:446 166:435 167:572 168:1009 169:131
170:1020 171:164 172:4 173:1550 174:584 175:418
176:1116 177:1666 178:1727 180:1386 181:232 182:1183
183:331 184:639 185:243 186:2316 187:1427 188:1930
189:1521 190:6614 192:6348 193:5658 194:4504 195:3681
196:1314 197:909 198:4161 199:5231 200:6087 201:2209
202:8951 203:8757 204:4481 205:2553 206:2798 207:2814
208:4062 209:3514 210:2903 211:1558 212:2014 213:1918
214:905 215:91 216:5131 217:1581 218:605 219:328
220:1265 221:550 222:337 223:467

End of report
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