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.

Thursday, November 14, 2013

[bgp-stats] Routing Table Report - Japan view

* BGP Routing Table Analysis Reports *
Routing Table Report 04:00 +10GMT Fri 15 Nov, 2013

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

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

BGP routing table entries examined: 474365
Prefixes after maximum aggregation: 189435
Deaggregation factor: 2.50
Unique aggregates announced to Internet: 234592
Total ASes present in the Internet Routing Table: 45453
Prefixes per ASN: 10.44
Origin-only ASes present in the Internet Routing Table: 35350
Origin ASes announcing only one prefix: 16277
Transit ASes present in the Internet Routing Table: 5951
Transit-only ASes present in the Internet Routing Table: 163
Average AS path length visible in the Internet Routing Table: 4.6
Max AS path length visible: 35
Max AS path prepend of ASN ( 55644) 31
Prefixes from unregistered ASNs in the Routing Table: 7477
Unregistered ASNs in the Routing Table: 620
Number of 32-bit ASNs allocated by the RIRs: 5348
Number of 32-bit ASNs visible in the Routing Table: 4152
Prefixes from 32-bit ASNs in the Routing Table: 13037
Special use prefixes present in the Routing Table: 1
Prefixes being announced from unallocated address space: 1074
Number of addresses announced to Internet: 2654986572
Equivalent to 158 /8s, 63 /16s and 225 /24s
Percentage of available address space announced: 71.7
Percentage of allocated address space announced: 71.7
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 95.2
Total number of prefixes smaller than registry allocations: 166523

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

Prefixes being announced by APNIC Region ASes: 111744
Total APNIC prefixes after maximum aggregation: 33935
APNIC Deaggregation factor: 3.29
Prefixes being announced from the APNIC address blocks: 113960
Unique aggregates announced from the APNIC address blocks: 47701
APNIC Region origin ASes present in the Internet Routing Table: 4876
APNIC Prefixes per ASN: 23.37
APNIC Region origin ASes announcing only one prefix: 1223
APNIC Region transit ASes present in the Internet Routing Table: 831
Average APNIC Region AS path length visible: 4.6
Max APNIC Region AS path length visible: 35
Number of APNIC region 32-bit ASNs visible in the Routing Table: 740
Number of APNIC addresses announced to Internet: 730063296
Equivalent to 43 /8s, 131 /16s and 225 /24s
Percentage of available APNIC address space announced: 85.3

APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319,
58368-59391, 63488-63999, 131072-133631
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: 163092
Total ARIN prefixes after maximum aggregation: 81723
ARIN Deaggregation factor: 2.00
Prefixes being announced from the ARIN address blocks: 163912
Unique aggregates announced from the ARIN address blocks: 76103
ARIN Region origin ASes present in the Internet Routing Table: 15915
ARIN Prefixes per ASN: 10.30
ARIN Region origin ASes announcing only one prefix: 5998
ARIN Region transit ASes present in the Internet Routing Table: 1659
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: 34
Number of ARIN addresses announced to Internet: 1073564032
Equivalent to 63 /8s, 253 /16s and 73 /24s
Percentage of available ARIN address space announced: 56.8

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, 62464-63487, 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: 121050
Total RIPE prefixes after maximum aggregation: 61028
RIPE Deaggregation factor: 1.98
Prefixes being announced from the RIPE address blocks: 124696
Unique aggregates announced from the RIPE address blocks: 78835
RIPE Region origin ASes present in the Internet Routing Table: 17516
RIPE Prefixes per ASN: 7.12
RIPE Region origin ASes announcing only one prefix: 8302
RIPE Region transit ASes present in the Internet Routing Table: 2836
Average RIPE Region AS path length visible: 5.0
Max RIPE Region AS path length visible: 31
Number of RIPE region 32-bit ASNs visible in the Routing Table: 2477
Number of RIPE addresses announced to Internet: 656672228
Equivalent to 39 /8s, 36 /16s and 5 /24s
Percentage of available RIPE address space announced: 95.5

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, 61952-62463, 196608-200191
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: 53050
Total LACNIC prefixes after maximum aggregation: 9994
LACNIC Deaggregation factor: 5.31
Prefixes being announced from the LACNIC address blocks: 58303
Unique aggregates announced from the LACNIC address blocks: 27005
LACNIC Region origin ASes present in the Internet Routing Table: 2042
LACNIC Prefixes per ASN: 28.55
LACNIC Region origin ASes announcing only one prefix: 552
LACNIC Region transit ASes present in the Internet Routing Table: 399
Average LACNIC Region AS path length visible: 4.8
Max LACNIC Region AS path length visible: 35
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 895
Number of LACNIC addresses announced to Internet: 142947880
Equivalent to 8 /8s, 133 /16s and 54 /24s
Percentage of available LACNIC address space announced: 85.2

LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
61440-61951, 262144-263679 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: 11787
Total AfriNIC prefixes after maximum aggregation: 2603
AfriNIC Deaggregation factor: 4.53
Prefixes being announced from the AfriNIC address blocks: 12420
Unique aggregates announced from the AfriNIC address blocks: 4086
AfriNIC Region origin ASes present in the Internet Routing Table: 683
AfriNIC Prefixes per ASN: 18.18
AfriNIC Region origin ASes announcing only one prefix: 202
AfriNIC Region transit ASes present in the Internet Routing Table: 139
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: 6
Number of AfriNIC addresses announced to Internet: 48021248
Equivalent to 2 /8s, 220 /16s and 191 /24s
Percentage of available AfriNIC address space announced: 47.7

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 2933 11557 943 Korea Telecom (KIX)
17974 2713 903 89 PT TELEKOMUNIKASI INDONESIA
7545 2109 319 111 TPG Internet Pty Ltd
4755 1789 392 190 TATA Communications formerly
9829 1544 1245 45 BSNL National Internet Backbo
9583 1242 94 508 Sify Limited
9498 1213 309 74 BHARTI Airtel Ltd.
7552 1164 1080 13 Vietel Corporation
4808 1148 2124 338 CNCGROUP IP network: China169
24560 1096 380 163 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 3052 3688 56 BellSouth.net Inc.
22773 2197 2939 138 Cox Communications, Inc.
18566 2057 379 178 MegaPath Corporation
1785 2039 685 130 PaeTec Communications, Inc.
20115 1681 1653 608 Charter Communications
4323 1637 1098 418 Time Warner Telecom
701 1508 11147 784 MCI Communications Services,
30036 1382 311 583 Mediacom Communications Corp
7018 1333 17778 872 AT&T WorldNet Services
6983 1293 755 578 ITC^Deltacom

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 1982 544 17 OJSC "Vimpelcom"
3352 1883 2396 44 Ibernet, Internet Access Netw
34984 1363 244 223 TELLCOM ILETISIM HIZMETLERI A
20940 1133 417 856 Akamai Technologies European
31148 1005 45 19 FreeNet ISP
13188 895 99 48 TOV "Bank-Inform"
6849 861 356 30 JSC UKRTELECOM,
8551 786 370 41 Bezeq International
6830 774 2328 426 UPC Distribution Services
12479 680 798 55 Uni2 Autonomous System

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 3418 1793 87 NET Servicos de Comunicao S.A
10620 2652 430 226 >>UNKNOWN<<
7303 1729 1151 232 Telecom Argentina Stet-France
18881 1549 908 20 Global Village Telecom
8151 1362 2853 414 UniNet S.A. de C.V.
11830 866 364 15 Instituto Costarricense de El
27947 846 93 90 Telconet S.A
6147 814 373 27 Telefonica Del Peru
6503 794 434 62 AVANTEL, S.A.
7738 780 1498 36 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 1864 112 5 Sudanese Mobile Telephone (ZA
24863 886 338 26 LINKdotNET AS number
6713 554 633 26 Itissalat Al-MAGHRIB
8452 418 956 9 TEDATA
24835 297 144 9 RAYA Telecom - Egypt
3741 256 921 214 The Internet Solution
36992 229 501 29 Etisalat MISR
29571 224 17 12 Ci Telecom Autonomous system
15706 221 32 6 Sudatel Internet Exchange Aut
29975 192 668 21 Vodacom

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
28573 3418 1793 87 NET Servicos de Comunicao S.A
6389 3052 3688 56 BellSouth.net Inc.
4766 2933 11557 943 Korea Telecom (KIX)
17974 2713 903 89 PT TELEKOMUNIKASI INDONESIA
10620 2652 430 226 >>UNKNOWN<<
22773 2197 2939 138 Cox Communications, Inc.
7545 2109 319 111 TPG Internet Pty Ltd
18566 2057 379 178 MegaPath Corporation
1785 2039 685 130 PaeTec Communications, Inc.
8402 1982 544 17 OJSC "Vimpelcom"

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 3052 2996 BellSouth.net Inc.
17974 2713 2624 PT TELEKOMUNIKASI INDONESIA
10620 2652 2426 >>UNKNOWN<<
22773 2197 2059 Cox Communications, Inc.
7545 2109 1998 TPG Internet Pty Ltd
4766 2933 1990 Korea Telecom (KIX)
8402 1982 1965 OJSC "Vimpelcom"
1785 2039 1909 PaeTec Communications, Inc.
18566 2057 1879 MegaPath Corporation
36998 1864 1859 Sudanese Mobile Telephone (ZA

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

List of Unregistered Origin ASNs (Global)
-----------------------------------------

Bad AS Designation Network Transit AS Description
62828 UNALLOCATED 8.21.130.0/24 4323 Time Warner Telecom
62850 UNALLOCATED 8.25.147.0/24 3356 Level 3 Communicatio
62734 UNALLOCATED 8.31.128.0/24 6939 Hurricane Electric
62773 UNALLOCATED 8.35.180.0/22 3356 Level 3 Communicatio
65160 PRIVATE 12.1.58.0/24 17361 Sungard Trading Syst
65160 PRIVATE 12.1.59.0/24 17361 Sungard Trading Syst
15132 UNALLOCATED 12.9.150.0/24 7018 AT&T WorldNet Servic
62719 UNALLOCATED 12.27.130.0/24 4323 Time Warner Telecom
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

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

Prefix Origin AS Description
100.100.0.0/24 4847 China Networks Inter-Exchange

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

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

Network Origin AS Description
23.90.128.0/18 27418 OUTOFWALL INC.
23.90.192.0/18 3257 Tiscali Intl Network
23.91.0.0/19 40676 Psychz Networks
23.91.4.0/24 40676 Psychz Networks
23.91.14.0/24 40676 Psychz Networks
23.91.32.0/19 36315 Servpac Inc.
23.91.80.0/20 21560 Capital Technology Services G
23.91.96.0/20 37958 ChinaCache Networks ASN
23.91.112.0/21 32475 MidPhase Inc.
23.91.160.0/19 36493 3757277 Canada Inc. (oa 295.c

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 /8:16 /9:11 /10:31 /11:92 /12:253
/13:474 /14:922 /15:1624 /16:12826 /17:6740 /18:11332
/19:23094 /20:32880 /21:35759 /22:50178 /23:44444 /24:251176
/25:876 /26:995 /27:475 /28:51 /29:81 /30:21
/31:0 /32:14

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

ASN No of nets Total ann. Description
18566 2011 2057 MegaPath Corporation
36998 1829 1864 Sudanese Mobile Telephone (ZA
6389 1705 3052 BellSouth.net Inc.
8402 1645 1982 OJSC "Vimpelcom"
3352 1475 1883 Ibernet, Internet Access Netw
22773 1456 2197 Cox Communications, Inc.
30036 1228 1382 Mediacom Communications Corp
11492 1191 1229 Cable One
1785 1086 2039 PaeTec Communications, Inc.
6983 1034 1293 ITC^Deltacom

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

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

1:899 2:864 3:3 4:17 5:1026 6:21
8:619 12:1898 13:3 14:897 15:11 16:3
17:17 18:19 20:21 23:562 24:1739 27:1645
31:1439 32:44 33:2 34:5 36:86 37:1921
38:919 39:5 40:182 41:3271 42:276 44:14
46:2027 47:10 49:690 50:848 52:12 54:43
55:7 56:4 57:26 58:1165 59:575 60:377
61:1471 62:1241 63:1979 64:4345 65:2344 66:4147
67:2113 68:1109 69:3305 70:874 71:489 72:2042
74:2564 75:326 76:307 77:1162 78:1069 79:678
80:1641 81:1148 82:651 83:674 84:591 85:1256
86:382 87:1012 88:623 89:1561 90:150 91:5654
92:625 93:1606 94:2039 95:1633 96:512 97:350
98:1039 99:41 100:32 101:638 103:3605 105:527
106:141 107:217 108:535 109:1946 110:975 111:1115
112:595 113:809 114:747 115:1052 116:1007 117:820
118:1179 119:1281 120:337 121:751 122:1874 123:1266
124:1402 125:1432 128:681 129:229 130:332 131:662
132:366 133:158 134:558 135:72 136:283 137:250
138:351 139:177 140:198 141:331 142:543 143:430
144:501 145:90 146:529 147:411 148:779 149:368
150:135 151:653 152:411 153:206 154:53 155:509
156:294 157:419 158:280 159:782 160:361 161:458
162:854 163:223 164:636 165:588 166:261 167:634
168:1044 169:125 170:1119 171:185 172:27 173:1594
174:688 175:522 176:1309 177:2487 178:1978 179:297
180:1591 181:870 182:1375 183:464 184:667 185:1018
186:2609 187:1471 188:1861 189:1261 190:7302 192:7049
193:5426 194:4047 195:3370 196:1344 197:1049 198:4754
199:5479 200:6072 201:2522 202:8958 203:8897 204:4537
205:2655 206:2837 207:2830 208:4008 209:3652 210:3033
211:1568 212:2169 213:1983 214:903 215:91 216:5443
217:1695 218:627 219:323 220:1277 221:578 222:327
223:505

End of report
_______________________________________________
bgp-stats mailing list
bgp-stats@lists.apnic.net
http://mailman.apnic.net/mailman/listinfo/bgp-stats
Posted by Admin at 10:15 AM

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)