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 20, 2011

[bgp-stats] Routing Table Report - Japan view

* BGP Routing Table Analysis Reports *
Routing Table Report 04:00 +10GMT Thu 21 Jul, 2011

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

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

BGP routing table entries examined: 363819
Prefixes after maximum aggregation: 165578
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 180677
Total ASes present in the Internet Routing Table: 38194
Prefixes per ASN: 9.53
Origin-only ASes present in the Internet Routing Table: 31750
Origin ASes announcing only one prefix: 15261
Transit ASes present in the Internet Routing Table: 5183
Transit-only ASes present in the Internet Routing Table: 134
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 34
Max AS path prepend of ASN (22394) 31
Prefixes from unregistered ASNs in the Routing Table: 934
Unregistered ASNs in the Routing Table: 543
Number of 32-bit ASNs allocated by the RIRs: 1576
Number of 32-bit ASNs visible in the Routing Table: 1261
Prefixes from 32-bit ASNs in the Routing Table: 2887
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 120
Number of addresses announced to Internet: 2478650176
Equivalent to 147 /8s, 189 /16s and 51 /24s
Percentage of available address space announced: 66.9
Percentage of allocated address space announced: 66.9
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 91.1
Total number of prefixes smaller than registry allocations: 151626

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

Prefixes being announced by APNIC Region ASes: 90970
Total APNIC prefixes after maximum aggregation: 30358
APNIC Deaggregation factor: 3.00
Prefixes being announced from the APNIC address blocks: 87543
Unique aggregates announced from the APNIC address blocks: 37455
APNIC Region origin ASes present in the Internet Routing Table: 4516
APNIC Prefixes per ASN: 19.39
APNIC Region origin ASes announcing only one prefix: 1251
APNIC Region transit ASes present in the Internet Routing Table: 714
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 18
Number of APNIC region 32-bit ASNs visible in the Routing Table: 61
Number of APNIC addresses announced to Internet: 622466592
Equivalent to 37 /8s, 26 /16s and 22 /24s
Percentage of available APNIC address space announced: 78.9

APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079
55296-56319, 131072-132095
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: 141533
Total ARIN prefixes after maximum aggregation: 73225
ARIN Deaggregation factor: 1.93
Prefixes being announced from the ARIN address blocks: 113406
Unique aggregates announced from the ARIN address blocks: 46652
ARIN Region origin ASes present in the Internet Routing Table: 14493
ARIN Prefixes per ASN: 7.82
ARIN Region origin ASes announcing only one prefix: 5550
ARIN Region transit ASes present in the Internet Routing Table: 1528
Average ARIN Region AS path length visible: 4.0
Max ARIN Region AS path length visible: 34
Number of ARIN region 32-bit ASNs visible in the Routing Table: 13
Number of ARIN addresses announced to Internet: 802433664
Equivalent to 47 /8s, 212 /16s and 42 /24s
Percentage of available ARIN address space announced: 63.8

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: 86482
Total RIPE prefixes after maximum aggregation: 49206
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 79867
Unique aggregates announced from the RIPE address blocks: 52879
RIPE Region origin ASes present in the Internet Routing Table: 15789
RIPE Prefixes per ASN: 5.06
RIPE Region origin ASes announcing only one prefix: 7874
RIPE Region transit ASes present in the Internet Routing Table: 2495
Average RIPE Region AS path length visible: 4.6
Max RIPE Region AS path length visible: 33
Number of RIPE region 32-bit ASNs visible in the Routing Table: 918
Number of RIPE addresses announced to Internet: 479588736
Equivalent to 28 /8s, 149 /16s and 241 /24s
Percentage of available RIPE address space announced: 77.3

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: 33658
Total LACNIC prefixes after maximum aggregation: 7619
LACNIC Deaggregation factor: 4.42
Prefixes being announced from the LACNIC address blocks: 32752
Unique aggregates announced from the LACNIC address blocks: 17052
LACNIC Region origin ASes present in the Internet Routing Table: 1478
LACNIC Prefixes per ASN: 22.16
LACNIC Region origin ASes announcing only one prefix: 434
LACNIC Region transit ASes present in the Internet Routing Table: 269
Average LACNIC Region AS path length visible: 4.4
Max LACNIC Region AS path length visible: 19
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 265
Number of LACNIC addresses announced to Internet: 86081280
Equivalent to 5 /8s, 33 /16s and 127 /24s
Percentage of available LACNIC address space announced: 57.0

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: 8113
Total AfriNIC prefixes after maximum aggregation: 1963
AfriNIC Deaggregation factor: 4.13
Prefixes being announced from the AfriNIC address blocks: 6422
Unique aggregates announced from the AfriNIC address blocks: 1994
AfriNIC Region origin ASes present in the Internet Routing Table: 474
AfriNIC Prefixes per ASN: 13.55
AfriNIC Region origin ASes announcing only one prefix: 152
AfriNIC Region transit ASes present in the Internet Routing Table: 103
Average AfriNIC Region AS path length visible: 4.7
Max AfriNIC Region AS path length visible: 24
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 4
Number of AfriNIC addresses announced to Internet: 24410880
Equivalent to 1 /8s, 116 /16s and 123 /24s
Percentage of available AfriNIC address space announced: 36.4

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 2470 11044 938 Korea Telecom (KIX)
7545 1554 301 85 TPG Internet Pty Ltd
17974 1554 508 32 PT TELEKOMUNIKASI INDONESIA
4755 1508 635 172 TATA Communications formerly
7552 1298 1064 7 Vietel Corporation
24560 1155 336 187 Bharti Airtel Ltd., Telemedia
9829 1106 923 47 BSNL National Internet Backbo
9583 1060 77 506 Sify Limited
4808 1049 2092 299 CNCGROUP IP network: China169
17488 965 187 106 Hathway IP Over Cable Interne

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 3607 3818 238 bellsouth.net, inc.
18566 1912 365 240 Covad Communications
1785 1810 681 122 PaeTec Communications, Inc.
4323 1615 1082 401 Time Warner Telecom
20115 1587 1535 625 Charter Communications
19262 1411 4744 391 Verizon Global Networks
7018 1365 7069 892 AT&T WorldNet Services
22773 1352 2897 89 Cox Communications, Inc.
7029 1292 791 304 Windstream Communications Inc
2386 1257 520 906 AT&T Data Communications Serv

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
34984 534 106 185 BILISIM TELEKOM
6830 511 1788 316 UPC Distribution Services
3292 468 2078 403 TDC Tele Danmark
20940 459 132 354 Akamai Technologies European
12479 456 593 7 Uni2 Autonomous System
8866 450 133 25 Bulgarian Telecommunication C
29049 432 32 47 AzerSat LLC.
3320 424 8151 370 Deutsche Telekom AG
8551 403 354 44 Bezeq International
702 397 1802 310 UUNET - Commercial IP service

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 1557 286 164 TVCABLE BOGOTA
8151 1436 2746 352 UniNet S.A. de C.V.
28573 1281 995 77 NET Servicos de Comunicao S.A
7303 1008 511 176 Telecom Argentina Stet-France
6503 749 354 74 AVANTEL, S.A.
14420 699 56 84 CORPORACION NACIONAL DE TELEC
22047 578 322 17 VTR PUNTO NET S.A.
3816 533 232 97 Empresa Nacional de Telecomun
7738 516 986 31 Telecomunicacoes da Bahia S.A
27947 509 53 53 Telconet 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
24863 793 147 36 LINKdotNET AS number
8452 719 445 11 TEDATA
15475 511 74 8 Nile Online
36992 317 415 15 Etisalat MISR
3741 262 937 223 The Internet Solution
6713 241 215 13 Itissalat Al-MAGHRIB
33776 226 13 5 Starcomms Nigeria Limited
24835 179 78 10 RAYA Telecom - Egypt
29571 158 17 11 Ci Telecom Autonomous system
15706 149 32 6 Sudatel Internet Exchange Aut

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 3607 3818 238 bellsouth.net, inc.
23456 2887 707 1560 32-bit ASN transition
4766 2470 11044 938 Korea Telecom (KIX)
18566 1912 365 240 Covad Communications
1785 1810 681 122 PaeTec Communications, Inc.
4323 1615 1082 401 Time Warner Telecom
20115 1587 1535 625 Charter Communications
10620 1557 286 164 TVCABLE BOGOTA
7545 1554 301 85 TPG Internet Pty Ltd
17974 1554 508 32 PT TELEKOMUNIKASI INDONESIA

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

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

ASN No of nets Net Savings Description
1785 1810 1688 PaeTec Communications, Inc.
18566 1912 1672 Covad Communications
4766 2470 1532 Korea Telecom (KIX)
17974 1554 1522 PT TELEKOMUNIKASI INDONESIA
7545 1554 1469 TPG Internet Pty Ltd
10620 1557 1393 TVCABLE BOGOTA
4755 1508 1336 TATA Communications formerly
23456 2887 1327 32-bit ASN transition
7552 1298 1291 Vietel Corporation
22773 1352 1263 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
26973 UNALLOCATED 12.39.152.0/24 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.154.0/23 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.155.0/24 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.159.0/24 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

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

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

Network Origin AS Description
24.225.128.0/18 36377 Comcast Telecommunications, I
24.225.192.0/23 36377 Comcast Telecommunications, I
24.225.192.0/18 36377 Comcast Telecommunications, I
24.225.224.0/21 36377 Comcast Telecommunications, I
24.225.237.0/24 36377 Comcast Telecommunications, I
24.225.248.0/21 36377 Comcast Telecommunications, I
41.222.79.0/24 36938 >>UNKNOWN<<
41.223.92.0/22 36936 >>UNKNOWN<<
62.61.220.0/24 24974 Tachyon Europe BV - Wireless
62.61.221.0/24 24974 Tachyon Europe BV - Wireless

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 /8:20 /9:12 /10:26 /11:80 /12:232
/13:465 /14:796 /15:1394 /16:12019 /17:5883 /18:9832
/19:19518 /20:26123 /21:26215 /22:34814 /23:33705 /24:189360
/25:1090 /26:1272 /27:740 /28:206 /29:9 /30:2
/31:0 /32:6

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

ASN No of nets Total ann. Description
6389 2228 3607 bellsouth.net, inc.
18566 1868 1912 Covad Communications
10620 1452 1557 TVCABLE BOGOTA
23456 1405 2887 32-bit ASN transition
11492 1095 1141 Cable One
7011 1056 1158 Citizens Utilities
1785 1055 1810 PaeTec Communications, Inc.
7029 1039 1292 Windstream Communications Inc
6478 1013 1042 AT&T Worldnet Services
22773 867 1352 Cox Communications, Inc.

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

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

1:330 2:45 4:16 5:1 6:3 8:338
12:1964 13:1 14:486 15:15 16:3 17:5
20:10 23:14 24:1679 27:839 31:502 32:64
33:4 34:2 36:4 38:746 40:104 41:2522
42:34 44:3 46:1038 47:3 49:198 50:382
52:13 54:2 55:6 56:2 57:35 58:860
59:479 60:385 61:1125 62:1033 63:1932 64:3971
65:2297 66:3861 67:1873 68:1106 69:3044 70:760
71:386 72:1886 74:2413 75:315 76:341 77:889
78:711 79:463 80:1112 81:836 82:496 83:463
84:689 85:1062 86:512 87:766 88:332 89:1522
90:224 91:3957 92:526 93:1051 94:1346 95:858
96:418 97:262 98:890 99:36 101:81 103:140
106:73 107:22 108:73 109:1015 110:609 111:711
112:306 113:410 114:553 115:684 116:984 117:686
118:824 119:1173 120:314 121:675 122:1607 123:972
124:1303 125:1277 128:246 129:171 130:164 131:576
132:111 133:21 134:214 135:48 136:214 137:138
138:299 139:116 140:479 141:247 142:403 143:419
144:487 145:55 146:454 147:219 148:671 149:249
150:161 151:189 152:342 153:182 154:4 155:398
156:199 157:352 158:137 159:454 160:313 161:204
162:310 163:165 164:504 165:367 166:531 167:435
168:739 169:153 170:849 171:79 172:1 173:1605
174:610 175:382 176:143 177:175 178:996 180:902
181:23 182:505 183:234 184:345 185:1 186:1273
187:746 188:892 189:923 190:4985 192:5904 193:4980
194:3515 195:3004 196:1208 197:41 198:3584 199:3975
200:5561 201:1479 202:8405 203:8439 204:4231 205:2333
206:2667 207:2805 208:3989 209:3425 210:2689 211:1452
212:2098 213:1743 214:777 215:70 216:4943 217:1666
218:543 219:347 220:1233 221:496 222:337 223:219


End of report
_______________________________________________
bgp-stats mailing list
bgp-stats@lists.apnic.net
http://mailman.apnic.net/mailman/listinfo/bgp-stats

No comments:

Post a Comment