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, June 20, 2012

[bgp-stats] Routing Table Report - Japan view

* BGP Routing Table Analysis Reports *
Routing Table Report 04:00 +10GMT Thu 21 Jun, 2012

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

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

BGP routing table entries examined: 414244
Prefixes after maximum aggregation: 175270
Deaggregation factor: 2.36
Unique aggregates announced to Internet: 202130
Total ASes present in the Internet Routing Table: 41307
Prefixes per ASN: 10.03
Origin-only ASes present in the Internet Routing Table: 33305
Origin ASes announcing only one prefix: 15647
Transit ASes present in the Internet Routing Table: 5516
Transit-only ASes present in the Internet Routing Table: 141
Average AS path length visible in the Internet Routing Table: 4.5
Max AS path length visible: 28
Max AS path prepend of ASN ( 36992) 22
Prefixes from unregistered ASNs in the Routing Table: 426
Unregistered ASNs in the Routing Table: 147
Number of 32-bit ASNs allocated by the RIRs: 2867
Number of 32-bit ASNs visible in the Routing Table: 2486
Prefixes from 32-bit ASNs in the Routing Table: 6312
Special use prefixes present in the Routing Table: 2
Prefixes being announced from unallocated address space: 341
Number of addresses announced to Internet: 2567320364
Equivalent to 153 /8s, 6 /16s and 51 /24s
Percentage of available address space announced: 69.3
Percentage of allocated address space announced: 69.3
Percentage of available address space allocated: 99.9
Percentage of address space in use by end-sites: 92.9
Total number of prefixes smaller than registry allocations: 144022

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

Prefixes being announced by APNIC Region ASes: 100904
Total APNIC prefixes after maximum aggregation: 32617
APNIC Deaggregation factor: 3.09
Prefixes being announced from the APNIC address blocks: 101339
Unique aggregates announced from the APNIC address blocks: 41863
APNIC Region origin ASes present in the Internet Routing Table: 4709
APNIC Prefixes per ASN: 21.52
APNIC Region origin ASes announcing only one prefix: 1241
APNIC Region transit ASes present in the Internet Routing Table: 746
Average APNIC Region AS path length visible: 4.7
Max APNIC Region AS path length visible: 24
Number of APNIC region 32-bit ASNs visible in the Routing Table: 236
Number of APNIC addresses announced to Internet: 703384960
Equivalent to 41 /8s, 236 /16s and 205 /24s
Percentage of available APNIC address space announced: 82.2

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: 152010
Total ARIN prefixes after maximum aggregation: 77261
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 152965
Unique aggregates announced from the ARIN address blocks: 68146
ARIN Region origin ASes present in the Internet Routing Table: 15168
ARIN Prefixes per ASN: 10.08
ARIN Region origin ASes announcing only one prefix: 5748
ARIN Region transit ASes present in the Internet Routing Table: 1598
Average ARIN Region AS path length visible: 4.0
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: 1080650624
Equivalent to 64 /8s, 105 /16s and 107 /24s
Percentage of available ARIN address space announced: 57.2

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: 103395
Total RIPE prefixes after maximum aggregation: 54816
RIPE Deaggregation factor: 1.89
Prefixes being announced from the RIPE address blocks: 105306
Unique aggregates announced from the RIPE address blocks: 66767
RIPE Region origin ASes present in the Internet Routing Table: 16630
RIPE Prefixes per ASN: 6.33
RIPE Region origin ASes announcing only one prefix: 8063
RIPE Region transit ASes present in the Internet Routing Table: 2658
Average RIPE Region AS path length visible: 5.0
Max RIPE Region AS path length visible: 28
Number of RIPE region 32-bit ASNs visible in the Routing Table: 1650
Number of RIPE addresses announced to Internet: 631197572
Equivalent to 37 /8s, 159 /16s and 79 /24s
Percentage of available RIPE address space announced: 91.8

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: 42112
Total LACNIC prefixes after maximum aggregation: 8327
LACNIC Deaggregation factor: 5.06
Prefixes being announced from the LACNIC address blocks: 44527
Unique aggregates announced from the LACNIC address blocks: 21766
LACNIC Region origin ASes present in the Internet Routing Table: 1587
LACNIC Prefixes per ASN: 28.06
LACNIC Region origin ASes announcing only one prefix: 429
LACNIC Region transit ASes present in the Internet Routing Table: 304
Average LACNIC Region AS path length visible: 4.4
Max LACNIC Region AS path length visible: 21
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 579
Number of LACNIC addresses announced to Internet: 110754984
Equivalent to 6 /8s, 153 /16s and 252 /24s
Percentage of available LACNIC address space announced: 66.0

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: 9320
Total AfriNIC prefixes after maximum aggregation: 2184
AfriNIC Deaggregation factor: 4.27
Prefixes being announced from the AfriNIC address blocks: 9766
Unique aggregates announced from the AfriNIC address blocks: 3280
AfriNIC Region origin ASes present in the Internet Routing Table: 549
AfriNIC Prefixes per ASN: 17.79
AfriNIC Region origin ASes announcing only one prefix: 166
AfriNIC Region transit ASes present in the Internet Routing Table: 124
Average AfriNIC Region AS path length visible: 4.6
Max AfriNIC Region AS path length visible: 25
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 40474880
Equivalent to 2 /8s, 105 /16s and 153 /24s
Percentage of available AfriNIC address space announced: 40.2

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 2711 11118 1197 Korea Telecom (KIX)
17974 1941 531 82 PT TELEKOMUNIKASI INDONESIA
7545 1687 301 85 TPG Internet Pty Ltd
4755 1593 385 155 TATA Communications formerly
9829 1300 1085 28 BSNL National Internet Backbo
9583 1183 89 509 Sify Limited
4808 1106 2053 314 CNCGROUP IP network: China169
7552 1094 1062 11 Vietel Corporation
24560 1033 385 165 Bharti Airtel Ltd., Telemedia
9498 966 291 63 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
6389 3403 3791 190 bellsouth.net, inc.
7029 3301 986 159 Windstream Communications Inc
18566 2090 382 180 Covad Communications
1785 1922 681 132 PaeTec Communications, Inc.
22773 1650 2911 121 Cox Communications, Inc.
20115 1645 1570 613 Charter Communications
4323 1569 1043 385 Time Warner Telecom
30036 1450 269 743 Mediacom Communications Corp
7018 1227 10014 825 AT&T WorldNet Services
11492 1189 216 356 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 1741 544 16 Corbina telecom
2118 1239 97 14 EUnet/RELCOM Autonomous Syste
12479 745 713 90 Uni2 Autonomous System
34984 709 188 173 BILISIM TELEKOM
31148 686 37 9 FreeNet ISP
6830 685 2234 437 UPC Distribution Services
20940 672 219 524 Akamai Technologies European
8551 575 364 61 Bezeq International
3320 490 8442 403 Deutsche Telekom AG
13188 480 100 10 Educational Network

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 1967 342 205 TVCABLE BOGOTA
28573 1942 1207 54 NET Servicos de Comunicao S.A
6503 1527 418 65 AVANTEL, S.A.
8151 1491 3068 337 UniNet S.A. de C.V.
7303 1440 901 195 Telecom Argentina Stet-France
26615 903 728 33 Tim Brasil S.A.
27947 705 73 93 Telconet S.A
11172 646 91 74 Servicios Alestra S.A de C.V
3816 584 245 92 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 1267 958 13 TEDATA
24863 859 274 35 LINKdotNET AS number
6713 497 649 18 Itissalat Al-MAGHRIB
24835 321 80 8 RAYA Telecom - Egypt
3741 262 905 223 The Internet Solution
33776 210 12 21 Starcomms Nigeria Limited
12258 197 28 62 Vodacom Internet Company
16637 172 664 87 MTN Network Solutions
29975 167 571 19 Vodacom
29571 157 15 16 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
6389 3403 3791 190 bellsouth.net, inc.
7029 3301 986 159 Windstream Communications Inc
4766 2711 11118 1197 Korea Telecom (KIX)
18566 2090 382 180 Covad Communications
10620 1967 342 205 TVCABLE BOGOTA
28573 1942 1207 54 NET Servicos de Comunicao S.A
17974 1941 531 82 PT TELEKOMUNIKASI INDONESIA
1785 1922 681 132 PaeTec Communications, Inc.
8402 1741 544 16 Corbina telecom
7545 1687 301 85 TPG Internet Pty Ltd

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

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

ASN No of nets Net Savings Description
7029 3301 3142 Windstream Communications Inc
18566 2090 1910 Covad Communications
28573 1942 1888 NET Servicos de Comunicao S.A
17974 1941 1859 PT TELEKOMUNIKASI INDONESIA
1785 1922 1790 PaeTec Communications, Inc.
10620 1967 1762 TVCABLE BOGOTA
8402 1741 1725 Corbina telecom
7545 1687 1602 TPG Internet Pty Ltd
22773 1650 1529 Cox Communications, Inc.
4766 2711 1514 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
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,
16476 UNALLOCATED 12.46.27.0/24 7018 AT&T WorldNet Servic
32873 UNALLOCATED 12.46.100.0/23 10912 InterNAP Network Ser
32873 UNALLOCATED 12.46.102.0/24 10912 InterNAP Network Ser
14764 UNALLOCATED 12.108.237.0/24 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
5.96.0.0/15 3269 TELECOM ITALIA
5.98.0.0/15 3269 TELECOM ITALIA
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

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 /9:13 /10:28 /11:83 /12:236
/13:461 /14:832 /15:1509 /16:12284 /17:6318 /18:10659
/19:20806 /20:29481 /21:31241 /22:40844 /23:38777 /24:216888
/25:1223 /26:1430 /27:834 /28:171 /29:66 /30:18
/31:0 /32:23

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

ASN No of nets Total ann. Description
7029 2682 3301 Windstream Communications Inc
18566 2039 2090 Covad Communications
6389 1876 3403 bellsouth.net, inc.
8402 1440 1741 Corbina telecom
30036 1390 1450 Mediacom Communications Corp
11492 1152 1189 Cable One
22773 1082 1650 Cox Communications, Inc.
6503 1061 1527 AVANTEL, S.A.
1785 1034 1922 PaeTec Communications, Inc.
8452 1034 1267 TEDATA

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

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

1:559 2:744 3:1 4:13 5:61 6:3
8:428 12:2012 13:1 14:627 15:12 16:3
17:5 20:24 23:184 24:1782 27:1312 31:987
32:56 33:2 34:2 36:9 37:575 38:813
40:127 41:3144 42:136 44:3 46:1429 47:2
49:399 50:562 52:13 54:12 55:8 56:1
57:34 58:974 59:499 60:259 61:1224 62:997
63:2039 64:4248 65:2253 66:4462 67:2018 68:1158
69:3179 70:983 71:509 72:1831 74:2598 75:477
76:326 77:939 78:968 79:492 80:1214 81:946
82:656 83:525 84:499 85:1190 86:417 87:936
88:331 89:1726 90:291 91:4945 92:572 93:1413
94:1589 95:1228 96:370 97:316 98:871 99:38
100:17 101:244 103:1191 106:103 107:186 108:338
109:1401 110:785 111:923 112:419 113:623 114:643
115:838 116:946 117:728 118:907 119:1235 120:347
121:693 122:1672 123:1097 124:1397 125:1250 128:560
129:198 130:251 131:632 132:289 133:22 134:244
135:61 136:215 137:239 138:334 139:191 140:493
141:253 142:417 143:384 144:534 145:74 146:512
147:296 148:770 149:314 150:165 151:183 152:473
153:174 154:17 155:446 156:224 157:381 158:188
159:620 160:345 161:268 162:350 163:190 164:639
165:414 166:588 167:474 168:913 169:127 170:885
171:139 172:4 173:1786 174:602 175:433 176:545
177:776 178:1501 180:1271 181:97 182:1020 183:230
184:515 185:1 186:2326 187:1123 188:1349 189:1833
190:5634 192:6006 193:5531 194:4543 195:3403 196:1205
197:154 198:3669 199:4793 200:5914 201:1963 202:8648
203:8540 204:4345 205:2542 206:2808 207:2794 208:4033
209:3608 210:2790 211:1556 212:2032 213:1927 214:877
215:88 216:5105 217:1560 218:553 219:312 220:1242
221:573 222:316 223:352

End of report
_______________________________________________
bgp-stats mailing list
bgp-stats@lists.apnic.net
http://mailman.apnic.net/mailman/listinfo/bgp-stats
Posted by Admin at 12:06 PM

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)