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 30, 2012

[bgp-stats] Routing Table Report - Japan view

* BGP Routing Table Analysis Reports *
Routing Table Report 04:00 +10GMT Tue 01 May, 2012

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

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

BGP routing table entries examined: 407076
Prefixes after maximum aggregation: 173045
Deaggregation factor: 2.35
Unique aggregates announced to Internet: 198074
Total ASes present in the Internet Routing Table: 40842
Prefixes per ASN: 9.97
Origin-only ASes present in the Internet Routing Table: 33121
Origin ASes announcing only one prefix: 15613
Transit ASes present in the Internet Routing Table: 5449
Transit-only ASes present in the Internet Routing Table: 138
Average AS path length visible in the Internet Routing Table: 4.5
Max AS path length visible: 64
Max AS path prepend of ASN ( 9902) 56
Prefixes from unregistered ASNs in the Routing Table: 398
Unregistered ASNs in the Routing Table: 131
Number of 32-bit ASNs allocated by the RIRs: 2652
Number of 32-bit ASNs visible in the Routing Table: 2272
Prefixes from 32-bit ASNs in the Routing Table: 5666
Special use prefixes present in the Routing Table: 2
Prefixes being announced from unallocated address space: 106
Number of addresses announced to Internet: 2540546000
Equivalent to 151 /8s, 109 /16s and 167 /24s
Percentage of available address space announced: 68.5
Percentage of allocated address space announced: 68.6
Percentage of available address space allocated: 99.9
Percentage of address space in use by end-sites: 92.5
Total number of prefixes smaller than registry allocations: 173644

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

Prefixes being announced by APNIC Region ASes: 99394
Total APNIC prefixes after maximum aggregation: 32295
APNIC Deaggregation factor: 3.08
Prefixes being announced from the APNIC address blocks: 95868
Unique aggregates announced from the APNIC address blocks: 39839
APNIC Region origin ASes present in the Internet Routing Table: 4682
APNIC Prefixes per ASN: 20.48
APNIC Region origin ASes announcing only one prefix: 1235
APNIC Region transit ASes present in the Internet Routing Table: 729
Average APNIC Region AS path length visible: 4.7
Max APNIC Region AS path length visible: 20
Number of APNIC region 32-bit ASNs visible in the Routing Table: 190
Number of APNIC addresses announced to Internet: 644274016
Equivalent to 38 /8s, 102 /16s and 215 /24s
Percentage of available APNIC address space announced: 81.7

APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319,
58368-59391, 131072-132095, 132096-133119
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, 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: 150252
Total ARIN prefixes after maximum aggregation: 76359
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 121319
Unique aggregates announced from the ARIN address blocks: 50457
ARIN Region origin ASes present in the Internet Routing Table: 15055
ARIN Prefixes per ASN: 8.06
ARIN Region origin ASes announcing only one prefix: 5726
ARIN Region transit ASes present in the Internet Routing Table: 1585
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: 17
Number of ARIN addresses announced to Internet: 807261376
Equivalent to 48 /8s, 29 /16s and 212 /24s
Percentage of available ARIN address space announced: 64.4

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, 173/8,
174/8, 184/8, 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: 101606
Total RIPE prefixes after maximum aggregation: 53892
RIPE Deaggregation factor: 1.89
Prefixes being announced from the RIPE address blocks: 93538
Unique aggregates announced from the RIPE address blocks: 58391
RIPE Region origin ASes present in the Internet Routing Table: 16527
RIPE Prefixes per ASN: 5.66
RIPE Region origin ASes announcing only one prefix: 8047
RIPE Region transit ASes present in the Internet Routing Table: 2625
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: 1529
Number of RIPE addresses announced to Internet: 511337096
Equivalent to 30 /8s, 122 /16s and 98 /24s
Percentage of available RIPE address space announced: 82.4

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
196608-198655
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,
176/8, 178/8, 185/8, 193/8, 194/8, 195/8, 212/8,
213/8, 217/8,

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

Prefixes being announced by LACNIC Region ASes: 41014
Total LACNIC prefixes after maximum aggregation: 8269
LACNIC Deaggregation factor: 4.96
Prefixes being announced from the LACNIC address blocks: 40901
Unique aggregates announced from the LACNIC address blocks: 20265
LACNIC Region origin ASes present in the Internet Routing Table: 1592
LACNIC Prefixes per ASN: 25.69
LACNIC Region origin ASes announcing only one prefix: 436
LACNIC Region transit ASes present in the Internet Routing Table: 299
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: 531
Number of LACNIC addresses announced to Internet: 99721608
Equivalent to 5 /8s, 241 /16s and 161 /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,
200/8, 201/8,

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

Prefixes being announced by AfriNIC Region ASes: 8967
Total AfriNIC prefixes after maximum aggregation: 2162
AfriNIC Deaggregation factor: 4.15
Prefixes being announced from the AfriNIC address blocks: 6982
Unique aggregates announced from the AfriNIC address blocks: 2222
AfriNIC Region origin ASes present in the Internet Routing Table: 537
AfriNIC Prefixes per ASN: 13.00
AfriNIC Region origin ASes announcing only one prefix: 169
AfriNIC Region transit ASes present in the Internet Routing Table: 121
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: 31800320
Equivalent to 1 /8s, 229 /16s and 60 /24s
Percentage of available AfriNIC address space announced: 47.4

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

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

ASN No of nets /20 equiv MaxAgg Description
4766 2484 11113 1012 Korea Telecom (KIX)
17974 1833 509 71 PT TELEKOMUNIKASI INDONESIA
7545 1678 301 87 TPG Internet Pty Ltd
4755 1576 385 156 TATA Communications formerly
9829 1262 1069 30 BSNL National Internet Backbo
7552 1169 1062 11 Vietel Corporation
9583 1149 85 494 Sify Limited
4808 1110 2050 318 CNCGROUP IP network: China169
24560 1026 385 167 Bharti Airtel Ltd., Telemedia
9498 956 291 66 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 3424 3807 193 bellsouth.net, inc.
7029 3368 986 158 Windstream Communications Inc
18566 2091 382 179 Covad Communications
1785 1907 680 131 PaeTec Communications, Inc.
20115 1639 1566 619 Charter Communications
4323 1598 1044 383 Time Warner Telecom
22773 1582 2910 114 Cox Communications, Inc.
30036 1422 261 768 Mediacom Communications Corp
7018 1247 9774 817 AT&T WorldNet Services
11492 1186 216 364 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 1634 544 16 Corbina telecom
2118 1304 97 14 EUnet/RELCOM Autonomous Syste
34984 683 188 173 BILISIM TELEKOM
31148 682 37 9 FreeNet ISP
6830 655 2215 426 UPC Distribution Services
12479 650 668 66 Uni2 Autonomous System
20940 641 208 502 Akamai Technologies European
8551 573 360 80 Bezeq International
3320 531 8441 397 Deutsche Telekom AG
2578 501 33 7 Demos, Moscow, Russia

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 1853 332 181 TVCABLE BOGOTA
28573 1814 1114 62 NET Servicos de Comunicao S.A
6503 1533 418 65 AVANTEL, S.A.
8151 1482 3000 344 UniNet S.A. de C.V.
7303 1362 829 187 Telecom Argentina Stet-France
26615 904 761 33 Tim Brasil S.A.
27947 684 74 98 Telconet S.A
11172 639 91 73 Servicios Alestra S.A de C.V
22047 582 326 15 VTR PUNTO NET S.A.
3816 572 242 100 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
8452 1310 958 13 TEDATA
24863 843 274 35 LINKdotNET AS number
6713 492 649 18 Itissalat Al-MAGHRIB
3741 265 921 223 The Internet Solution
12258 197 28 62 Vodacom Internet Company
33776 191 12 23 Starcomms Nigeria Limited
24835 179 80 8 RAYA Telecom - Egypt
16637 174 666 83 MTN Network Solutions
15706 169 32 6 Sudatel Internet Exchange Aut
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 3424 3807 193 bellsouth.net, inc.
7029 3368 986 158 Windstream Communications Inc
4766 2484 11113 1012 Korea Telecom (KIX)
18566 2091 382 179 Covad Communications
1785 1907 680 131 PaeTec Communications, Inc.
10620 1853 332 181 TVCABLE BOGOTA
17974 1833 509 71 PT TELEKOMUNIKASI INDONESIA
28573 1814 1114 62 NET Servicos de Comunicao S.A
7545 1678 301 87 TPG Internet Pty Ltd
20115 1639 1566 619 Charter Communications

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 3368 3210 Windstream Communications Inc
18566 2091 1912 Covad Communications
1785 1907 1776 PaeTec Communications, Inc.
17974 1833 1762 PT TELEKOMUNIKASI INDONESIA
28573 1814 1752 NET Servicos de Comunicao S.A
10620 1853 1672 TVCABLE BOGOTA
8402 1634 1618 Corbina telecom
7545 1678 1591 TPG Internet Pty Ltd
4766 2484 1472 Korea Telecom (KIX)
22773 1582 1468 Cox Communications, Inc.

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
32567 UNALLOCATED 12.14.170.0/24 4323 Time Warner Telecom
32567 UNALLOCATED 12.25.107.0/24 4323 Time Warner Telecom
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

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
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
27.54.144.0/24 45774 Chandra Net Pvt. Limited, Ind
27.54.151.0/24 45774 Chandra Net Pvt. Limited, Ind

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 /9:12 /10:28 /11:81 /12:234
/13:461 /14:832 /15:1489 /16:12231 /17:6252 /18:10547
/19:20621 /20:29016 /21:30070 /22:40607 /23:38054 /24:212852
/25:1192 /26:1429 /27:783 /28:163 /29:67 /30:17
/31:0 /32:19

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

ASN No of nets Total ann. Description
7029 3026 3368 Windstream Communications Inc
6389 2142 3424 bellsouth.net, inc.
18566 2040 2091 Covad Communications
10620 1712 1853 TVCABLE BOGOTA
8402 1612 1634 Corbina telecom
30036 1366 1422 Mediacom Communications Corp
6503 1291 1533 AVANTEL, S.A.
11492 1149 1186 Cable One
8452 1111 1310 TEDATA
1785 1072 1907 PaeTec Communications, Inc.

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

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

1:539 2:530 4:14 5:1 6:3 8:405
12:1998 13:1 14:610 15:12 16:3 17:5
20:23 23:168 24:1764 27:1259 31:954 32:57
33:2 34:2 36:8 37:423 38:797 40:120
41:3104 42:134 44:3 46:1481 47:3 49:412
50:541 52:13 54:9 55:11 56:3 57:31
58:971 59:492 60:254 61:1205 62:979 63:2005
64:4175 65:2255 66:4478 67:2017 68:1164 69:3177
70:902 71:484 72:1827 74:2613 75:494 76:318
77:946 78:1012 79:487 80:1208 81:905 82:671
83:549 84:483 85:1209 86:411 87:928 88:340
89:1611 90:290 91:4754 92:520 93:1504 94:1449
95:890 96:358 97:315 98:901 99:37 100:7
101:185 103:1025 106:102 107:191 108:271 109:1312
110:748 111:908 112:455 113:605 114:643 115:816
116:929 117:718 118:908 119:1230 120:347 121:693
122:1676 123:1103 124:1385 125:1245 128:561 129:194
130:255 131:619 132:178 133:22 134:245 135:62
136:213 137:177 138:356 139:163 140:485 141:243
142:407 143:396 144:519 145:74 146:499 147:280
148:769 149:306 150:158 151:180 152:464 153:172
154:12 155:399 156:214 157:375 158:176 159:541
160:338 161:260 162:348 163:191 164:582 165:398
166:573 167:468 168:819 169:128 170:860 171:127
172:2 173:1758 174:578 175:438 176:684 177:652
178:1360 180:1202 181:82 182:827 183:290 184:463
185:1 186:2246 187:1058 188:1227 189:1799 190:5516
192:6012 193:5550 194:4656 195:3600 196:1280 197:134
198:3652 199:4542 200:5827 201:1933 202:8493 203:8607
204:4329 205:2492 206:2745 207:2798 208:4054 209:3616
210:2738 211:1480 212:1998 213:1924 214:849 215:104
216:5123 217:1522 218:544 219:305 220:1230 221:557
222:324 223:312

End of report
_______________________________________________
bgp-stats mailing list
bgp-stats@lists.apnic.net
http://mailman.apnic.net/mailman/listinfo/bgp-stats
Posted by Admin at 11:44 AM

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)