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, July 25, 2012

[bgp-stats] Routing Table Report - Japan view

* BGP Routing Table Analysis Reports *
Routing Table Report 04:00 +10GMT Thu 26 Jul, 2012

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

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

BGP routing table entries examined: 418209
Prefixes after maximum aggregation: 176442
Deaggregation factor: 2.37
Unique aggregates announced to Internet: 201523
Total ASes present in the Internet Routing Table: 41618
Prefixes per ASN: 10.05
Origin-only ASes present in the Internet Routing Table: 33368
Origin ASes announcing only one prefix: 15704
Transit ASes present in the Internet Routing Table: 5598
Transit-only ASes present in the Internet Routing Table: 133
Average AS path length visible in the Internet Routing Table: 4.6
Max AS path length visible: 30
Max AS path prepend of ASN ( 36992) 22
Prefixes from unregistered ASNs in the Routing Table: 374
Unregistered ASNs in the Routing Table: 141
Number of 32-bit ASNs allocated by the RIRs: 3029
Number of 32-bit ASNs visible in the Routing Table: 2652
Prefixes from 32-bit ASNs in the Routing Table: 6827
Special use prefixes present in the Routing Table: 1
Prefixes being announced from unallocated address space: 166
Number of addresses announced to Internet: 2572336928
Equivalent to 153 /8s, 82 /16s and 191 /24s
Percentage of available address space announced: 69.4
Percentage of allocated address space announced: 69.5
Percentage of available address space allocated: 99.9
Percentage of address space in use by end-sites: 93.1
Total number of prefixes smaller than registry allocations: 145547

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

Prefixes being announced by APNIC Region ASes: 102320
Total APNIC prefixes after maximum aggregation: 32804
APNIC Deaggregation factor: 3.12
Prefixes being announced from the APNIC address blocks: 102806
Unique aggregates announced from the APNIC address blocks: 42265
APNIC Region origin ASes present in the Internet Routing Table: 4723
APNIC Prefixes per ASN: 21.77
APNIC Region origin ASes announcing only one prefix: 1247
APNIC Region transit ASes present in the Internet Routing Table: 756
Average APNIC Region AS path length visible: 4.6
Max APNIC Region AS path length visible: 26
Number of APNIC region 32-bit ASNs visible in the Routing Table: 260
Number of APNIC addresses announced to Internet: 705607040
Equivalent to 42 /8s, 14 /16s and 181 /24s
Percentage of available APNIC address space announced: 82.5

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: 153081
Total ARIN prefixes after maximum aggregation: 77644
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 154153
Unique aggregates announced from the ARIN address blocks: 68756
ARIN Region origin ASes present in the Internet Routing Table: 15213
ARIN Prefixes per ASN: 10.13
ARIN Region origin ASes announcing only one prefix: 5777
ARIN Region transit ASes present in the Internet Routing Table: 1611
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: 16
Number of ARIN addresses announced to Internet: 1072313216
Equivalent to 63 /8s, 234 /16s and 51 /24s
Percentage of available ARIN address space announced: 56.7

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: 103753
Total RIPE prefixes after maximum aggregation: 55363
RIPE Deaggregation factor: 1.87
Prefixes being announced from the RIPE address blocks: 105936
Unique aggregates announced from the RIPE address blocks: 66801
RIPE Region origin ASes present in the Internet Routing Table: 16698
RIPE Prefixes per ASN: 6.34
RIPE Region origin ASes announcing only one prefix: 8090
RIPE Region transit ASes present in the Internet Routing Table: 2708
Average RIPE Region AS path length visible: 5.1
Max RIPE Region AS path length visible: 28
Number of RIPE region 32-bit ASNs visible in the Routing Table: 1741
Number of RIPE addresses announced to Internet: 638111616
Equivalent to 38 /8s, 8 /16s and 207 /24s
Percentage of available RIPE address space announced: 92.8

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
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: 42619
Total LACNIC prefixes after maximum aggregation: 8404
LACNIC Deaggregation factor: 5.07
Prefixes being announced from the LACNIC address blocks: 45281
Unique aggregates announced from the LACNIC address blocks: 21871
LACNIC Region origin ASes present in the Internet Routing Table: 1612
LACNIC Prefixes per ASN: 28.09
LACNIC Region origin ASes announcing only one prefix: 422
LACNIC Region transit ASes present in the Internet Routing Table: 312
Average LACNIC Region AS path length visible: 4.7
Max LACNIC Region AS path length visible: 25
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 629
Number of LACNIC addresses announced to Internet: 112403104
Equivalent to 6 /8s, 179 /16s and 34 /24s
Percentage of available LACNIC address space announced: 67.0

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: 9449
Total AfriNIC prefixes after maximum aggregation: 2172
AfriNIC Deaggregation factor: 4.35
Prefixes being announced from the AfriNIC address blocks: 9867
Unique aggregates announced from the AfriNIC address blocks: 1687
AfriNIC Region origin ASes present in the Internet Routing Table: 553
AfriNIC Prefixes per ASN: 17.84
AfriNIC Region origin ASes announcing only one prefix: 168
AfriNIC Region transit ASes present in the Internet Routing Table: 121
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: 6
Number of AfriNIC addresses announced to Internet: 42517504
Equivalent to 2 /8s, 136 /16s and 196 /24s
Percentage of available AfriNIC address space announced: 42.2

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 2756 11123 1251 Korea Telecom (KIX)
17974 2259 564 85 PT TELEKOMUNIKASI INDONESIA
7545 1705 301 88 TPG Internet Pty Ltd
4755 1616 388 163 TATA Communications formerly
9829 1305 1085 26 BSNL National Internet Backbo
9583 1164 88 511 Sify Limited
7552 1128 1062 11 Vietel Corporation
4808 1120 2055 319 CNCGROUP IP network: China169
24560 1037 385 165 Bharti Airtel Ltd., Telemedia
9498 989 294 73 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
7029 3414 988 156 Windstream Communications Inc
6389 3384 3773 186 bellsouth.net, inc.
18566 2088 382 181 Covad Communications
1785 1939 681 131 PaeTec Communications, Inc.
22773 1698 2914 125 Cox Communications, Inc.
20115 1647 1569 613 Charter Communications
4323 1576 1028 383 Time Warner Telecom
30036 1394 271 782 Mediacom Communications Corp
7018 1256 10040 823 AT&T WorldNet Services
11492 1192 217 350 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 1662 544 16 Corbina telecom
12479 808 749 92 Uni2 Autonomous System
34984 734 189 176 BILISIM TELEKOM
6830 712 2302 446 UPC Distribution Services
31148 707 37 9 FreeNet ISP
20940 698 227 551 Akamai Technologies European
2118 632 97 14 EUnet/RELCOM Autonomous Syste
13188 602 100 9 Educational Network
8551 579 364 61 Bezeq International
3320 500 8443 410 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 2026 348 209 TVCABLE BOGOTA
28573 2026 1226 58 NET Servicos de Comunicao S.A
6503 1523 419 67 AVANTEL, S.A.
8151 1475 3070 353 UniNet S.A. de C.V.
7303 1443 932 194 Telecom Argentina Stet-France
6458 879 81 15 GUATEL
27947 717 74 94 Telconet S.A
11172 645 91 74 Servicios Alestra S.A de C.V
3816 596 250 83 Empresa Nacional de Telecomun
22047 583 326 15 VTR PUNTO NET 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 1002 958 13 TEDATA
24863 863 274 32 LINKdotNET AS number
6713 509 650 19 Itissalat Al-MAGHRIB
36998 483 48 3 MOBITEL
24835 286 80 8 RAYA Telecom - Egypt
3741 263 905 224 The Internet Solution
12258 197 28 62 Vodacom Internet Company
29975 191 667 21 Vodacom
16637 169 664 86 MTN Network Solutions
29571 160 15 15 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
7029 3414 988 156 Windstream Communications Inc
6389 3384 3773 186 bellsouth.net, inc.
4766 2756 11123 1251 Korea Telecom (KIX)
17974 2259 564 85 PT TELEKOMUNIKASI INDONESIA
18566 2088 382 181 Covad Communications
10620 2026 348 209 TVCABLE BOGOTA
28573 2026 1226 58 NET Servicos de Comunicao S.A
1785 1939 681 131 PaeTec Communications, Inc.
7545 1705 301 88 TPG Internet Pty Ltd
22773 1698 2914 125 Cox Communications, Inc.

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 3384 3198 bellsouth.net, inc.
17974 2259 2174 PT TELEKOMUNIKASI INDONESIA
28573 2026 1968 NET Servicos de Comunicao S.A
18566 2088 1907 Covad Communications
10620 2026 1817 TVCABLE BOGOTA
1785 1939 1808 PaeTec Communications, Inc.
8402 1662 1646 Corbina telecom
7545 1705 1617 TPG Internet Pty Ltd
22773 1698 1573 Cox Communications, Inc.
4766 2756 1505 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
59407 UNALLOCATED 5.134.16.0/21 51167 Giga-Hosting GmbH
59457 UNALLOCATED 5.149.64.0/19 35567 DASTO semtel d.o.o.
59473 UNALLOCATED 5.149.152.0/22 44843 AmsterdamTelecom Ltd
59473 UNALLOCATED 5.149.156.0/23 44843 AmsterdamTelecom Ltd
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,

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

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

Prefix Origin AS Description
198.18.0.0/15 14744 Internap Network Services

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

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

Network Origin AS Description
5.157.128.0/17 49687 SC RoSite Equipment SRL
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
27.112.114.0/24 23884 Proimage Engineering and Comm

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 /8:21 /9:12 /10:28 /11:82 /12:236
/13:474 /14:846 /15:1525 /16:12303 /17:6365 /18:10740
/19:20928 /20:29837 /21:31696 /22:41354 /23:39492 /24:218534
/25:1201 /26:1458 /27:836 /28:155 /29:53 /30:12
/31:0 /32:21

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

ASN No of nets Total ann. Description
7029 2773 3414 Windstream Communications Inc
18566 2038 2088 Covad Communications
6389 1864 3384 bellsouth.net, inc.
8402 1359 1662 Corbina telecom
30036 1329 1394 Mediacom Communications Corp
11492 1155 1192 Cable One
22773 1122 1698 Cox Communications, Inc.
6503 1051 1523 AVANTEL, S.A.
1785 1047 1939 PaeTec Communications, Inc.
7011 930 1191 Citizens Utilities

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

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

1:569 2:752 3:1 4:13 5:202 6:3
8:440 12:2013 13:1 14:637 15:11 16:3
17:6 20:24 23:197 24:1796 27:1343 31:1017
32:56 33:2 34:2 36:8 37:669 38:824
39:1 40:133 41:2807 42:159 44:3 46:1528
47:2 49:429 50:563 52:13 54:14 55:9
56:1 57:31 58:984 59:532 60:244 61:1355
62:921 63:2029 64:4255 65:2245 66:4510 67:2015
68:1156 69:3222 70:988 71:514 72:1869 74:2603
75:489 76:335 77:940 78:935 79:491 80:1229
81:946 82:638 83:539 84:509 85:1151 86:424
87:928 88:346 89:1686 90:303 91:5055 92:585
93:1312 94:1562 95:1240 96:401 97:319 98:885
99:39 100:21 101:258 103:1310 105:464 106:115
107:189 108:401 109:1452 110:788 111:944 112:432
113:684 114:665 115:910 116:919 117:735 118:919
119:1227 120:359 121:805 122:1665 123:1153 124:1380
125:1259 128:555 129:185 130:267 131:637 132:298
133:22 134:246 135:61 136:215 137:240 138:342
139:177 140:496 141:253 142:435 143:375 144:494
145:77 146:510 147:286 148:765 149:319 150:153
151:186 152:473 153:175 154:19 155:404 156:222
157:335 158:189 159:630 160:344 161:279 162:381
163:187 164:675 165:413 166:587 167:535 168:959
169:127 170:898 171:151 172:5 173:1736 174:621
175:438 176:572 177:969 178:1633 180:1317 181:112
182:997 183:207 184:559 186:1997 187:1091 188:1370
189:1576 190:6133 192:6017 193:5437 194:4201 195:3206
196:1205 197:174 198:3693 199:4936 200:5989 201:1973
202:8723 203:8669 204:4396 205:2539 206:2789 207:2830
208:4028 209:3636 210:2769 211:1565 212:1985 213:1792
214:883 215:86 216:5081 217:1567 218:560 219:338
220:1234 221:575 222:334 223:349

End of report
_______________________________________________
bgp-stats mailing list
bgp-stats@lists.apnic.net
http://mailman.apnic.net/mailman/listinfo/bgp-stats
Posted by Admin at 12:14 PM

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)