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.

Tuesday, October 8, 2013

[bgp-stats] Routing Table Report - Japan view

* BGP Routing Table Analysis Reports *
Routing Table Report 04:00 +10GMT Wed 09 Oct, 2013

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

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

BGP routing table entries examined: 469352
Prefixes after maximum aggregation: 189116
Deaggregation factor: 2.48
Unique aggregates announced to Internet: 232668
Total ASes present in the Internet Routing Table: 45137
Prefixes per ASN: 10.40
Origin-only ASes present in the Internet Routing Table: 35234
Origin ASes announcing only one prefix: 16251
Transit ASes present in the Internet Routing Table: 5907
Transit-only ASes present in the Internet Routing Table: 161
Average AS path length visible in the Internet Routing Table: 4.6
Max AS path length visible: 30
Max AS path prepend of ASN ( 59482) 25
Prefixes from unregistered ASNs in the Routing Table: 436
Unregistered ASNs in the Routing Table: 241
Number of 32-bit ASNs allocated by the RIRs: 5155
Number of 32-bit ASNs visible in the Routing Table: 3996
Prefixes from 32-bit ASNs in the Routing Table: 12336
Special use prefixes present in the Routing Table: 1
Prefixes being announced from unallocated address space: 688
Number of addresses announced to Internet: 2648047380
Equivalent to 157 /8s, 213 /16s and 255 /24s
Percentage of available address space announced: 71.5
Percentage of allocated address space announced: 71.5
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 95.0
Total number of prefixes smaller than registry allocations: 164216

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

Prefixes being announced by APNIC Region ASes: 111261
Total APNIC prefixes after maximum aggregation: 33821
APNIC Deaggregation factor: 3.29
Prefixes being announced from the APNIC address blocks: 113311
Unique aggregates announced from the APNIC address blocks: 46861
APNIC Region origin ASes present in the Internet Routing Table: 4872
APNIC Prefixes per ASN: 23.26
APNIC Region origin ASes announcing only one prefix: 1219
APNIC Region transit ASes present in the Internet Routing Table: 820
Average APNIC Region AS path length visible: 4.6
Max APNIC Region AS path length visible: 28
Number of APNIC region 32-bit ASNs visible in the Routing Table: 702
Number of APNIC addresses announced to Internet: 728387840
Equivalent to 43 /8s, 106 /16s and 81 /24s
Percentage of available APNIC address space announced: 85.1

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: 162908
Total ARIN prefixes after maximum aggregation: 81566
ARIN Deaggregation factor: 2.00
Prefixes being announced from the ARIN address blocks: 163390
Unique aggregates announced from the ARIN address blocks: 75976
ARIN Region origin ASes present in the Internet Routing Table: 15895
ARIN Prefixes per ASN: 10.28
ARIN Region origin ASes announcing only one prefix: 6011
ARIN Region transit ASes present in the Internet Routing Table: 1660
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: 23
Number of ARIN addresses announced to Internet: 1073328640
Equivalent to 63 /8s, 249 /16s and 178 /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: 119024
Total RIPE prefixes after maximum aggregation: 61265
RIPE Deaggregation factor: 1.94
Prefixes being announced from the RIPE address blocks: 122602
Unique aggregates announced from the RIPE address blocks: 78924
RIPE Region origin ASes present in the Internet Routing Table: 17459
RIPE Prefixes per ASN: 7.02
RIPE Region origin ASes announcing only one prefix: 8261
RIPE Region transit ASes present in the Internet Routing Table: 2821
Average RIPE Region AS path length visible: 5.1
Max RIPE Region AS path length visible: 30
Number of RIPE region 32-bit ASNs visible in the Routing Table: 2411
Number of RIPE addresses announced to Internet: 656484324
Equivalent to 39 /8s, 33 /16s and 39 /24s
Percentage of available RIPE address space announced: 95.4

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
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: 52063
Total LACNIC prefixes after maximum aggregation: 9839
LACNIC Deaggregation factor: 5.29
Prefixes being announced from the LACNIC address blocks: 57110
Unique aggregates announced from the LACNIC address blocks: 26321
LACNIC Region origin ASes present in the Internet Routing Table: 2036
LACNIC Prefixes per ASN: 28.05
LACNIC Region origin ASes announcing only one prefix: 565
LACNIC Region transit ASes present in the Internet Routing Table: 384
Average LACNIC Region AS path length visible: 4.8
Max LACNIC Region AS path length visible: 29
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 854
Number of LACNIC addresses announced to Internet: 140130864
Equivalent to 8 /8s, 90 /16s and 58 /24s
Percentage of available LACNIC address space announced: 83.5

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: 11609
Total AfriNIC prefixes after maximum aggregation: 2535
AfriNIC Deaggregation factor: 4.58
Prefixes being announced from the AfriNIC address blocks: 12251
Unique aggregates announced from the AfriNIC address blocks: 3997
AfriNIC Region origin ASes present in the Internet Routing Table: 652
AfriNIC Prefixes per ASN: 18.79
AfriNIC Region origin ASes announcing only one prefix: 195
AfriNIC Region transit ASes present in the Internet Routing Table: 135
Average AfriNIC Region AS path length visible: 4.8
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: 47741696
Equivalent to 2 /8s, 216 /16s and 123 /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, 154/8, 196/8, 197/8,

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

ASN No of nets /20 equiv MaxAgg Description
4766 2943 11563 946 Korea Telecom (KIX)
17974 2712 903 90 PT TELEKOMUNIKASI INDONESIA
7545 2081 321 112 TPG Internet Pty Ltd
4755 1766 391 187 TATA Communications formerly
9829 1548 1241 43 BSNL National Internet Backbo
9583 1237 93 507 Sify Limited
9498 1198 309 72 BHARTI Airtel Ltd.
4808 1191 2131 347 CNCGROUP IP network: China169
7552 1160 1080 13 Vietel Corporation
24560 1091 380 164 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 3060 3689 59 BellSouth.net Inc.
18566 2066 382 184 Covad Communications
22773 2056 2943 140 Cox Communications, Inc.
1785 2019 679 125 PaeTec Communications, Inc.
20115 1679 1651 616 Charter Communications
4323 1624 1103 418 Time Warner Telecom
701 1517 11148 790 UUNET Technologies, Inc.
30036 1338 301 638 Mediacom Communications Corp
7018 1333 17515 859 AT&T WorldNet Services
6983 1293 771 579 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 1863 544 17 OJSC "Vimpelcom"
34984 1365 244 221 TELLCOM ILETISIM HIZMETLERI A
20940 1050 386 807 Akamai Technologies European
31148 990 44 19 FreeNet ISP
6830 892 2365 425 UPC Distribution Services
13188 850 99 62 TOV "Bank-Inform"
8551 756 370 41 Bezeq International
12479 680 799 49 Uni2 Autonomous System
35228 540 246 16 Avatar Broadband Limited
3320 510 8416 404 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
28573 3394 1736 89 NET Servicos de Comunicao S.A
10620 2598 423 248 TVCABLE BOGOTA
7303 1724 1135 233 Telecom Argentina Stet-France
18881 1462 844 20 Global Village Telecom
8151 1342 2815 413 UniNet S.A. de C.V.
11830 865 364 15 Instituto Costarricense de El
27947 839 93 91 Telconet S.A
6147 799 373 27 Telefonica Del Peru
7738 780 1498 36 Telecomunicacoes da Bahia S.A
6503 771 434 61 AVANTEL, 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 883 306 30 LINKdotNET AS number
6713 554 633 26 Itissalat Al-MAGHRIB
8452 425 956 9 TEDATA
24835 292 80 8 RAYA Telecom - Egypt
3741 258 921 216 The Internet Solution
29571 223 17 12 Ci Telecom Autonomous system
36992 222 501 28 Etisalat MISR
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 3394 1736 89 NET Servicos de Comunicao S.A
6389 3060 3689 59 BellSouth.net Inc.
4766 2943 11563 946 Korea Telecom (KIX)
17974 2712 903 90 PT TELEKOMUNIKASI INDONESIA
10620 2598 423 248 TVCABLE BOGOTA
7545 2081 321 112 TPG Internet Pty Ltd
18566 2066 382 184 Covad Communications
22773 2056 2943 140 Cox Communications, Inc.
1785 2019 679 125 PaeTec Communications, Inc.
36998 1864 112 5 Sudanese Mobile Telephone (ZA

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 3060 3001 BellSouth.net Inc.
17974 2712 2622 PT TELEKOMUNIKASI INDONESIA
10620 2598 2350 TVCABLE BOGOTA
4766 2943 1997 Korea Telecom (KIX)
7545 2081 1969 TPG Internet Pty Ltd
22773 2056 1916 Cox Communications, Inc.
1785 2019 1894 PaeTec Communications, Inc.
18566 2066 1882 Covad Communications
36998 1864 1859 Sudanese Mobile Telephone (ZA
8402 1863 1846 OJSC "Vimpelcom"

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
30031 UNALLOCATED 12.27.122.0/24 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
17300 UNALLOCATED 12.45.103.0/24 209 Qwest
17300 UNALLOCATED 12.45.110.0/24 701 UUNET Technologies,
16476 UNALLOCATED 12.46.27.0/24 7018 AT&T WorldNet Servic
14764 UNALLOCATED 12.108.237.0/24 7018 AT&T WorldNet Servic
33649 UNALLOCATED 12.111.112.0/24 19029 New Edge Networks

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 36086 Broad Communications Technolo
23.91.0.0/19 40676 Psychz Networks
23.91.32.0/19 36315 Servpac Inc.
23.91.96.0/20 40676 Psychz Networks
23.91.112.0/21 32475 MidPhase Inc.
23.91.160.0/22 36493 3757277 Canada Inc. (oa 295.c
23.91.160.0/19 36493 3757277 Canada Inc. (oa 295.c
23.91.164.0/22 36493 3757277 Canada Inc. (oa 295.c
23.91.168.0/22 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 /12:251
/13:481 /14:914 /15:1624 /16:12826 /17:6701 /18:11220
/19:22973 /20:32608 /21:35333 /22:49828 /23:43066 /24:248848
/25:901 /26:992 /27:476 /28:49 /29:79 /30:20
/31:0 /32:12

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

ASN No of nets Total ann. Description
18566 2017 2066 Covad Communications
36998 1829 1864 Sudanese Mobile Telephone (ZA
6389 1709 3060 BellSouth.net Inc.
8402 1582 1863 OJSC "Vimpelcom"
22773 1328 2056 Cox Communications, Inc.
30036 1195 1338 Mediacom Communications Corp
11492 1192 1233 Cable One
1785 1085 2019 PaeTec Communications, Inc.
6983 1033 1293 ITC^Deltacom
22561 962 1237 Digital Teleport, Inc

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

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

1:832 2:859 3:3 4:17 5:996 6:19
8:612 12:1897 13:3 14:875 15:11 16:3
17:14 18:19 20:21 23:453 24:1720 27:1594
31:1474 32:45 33:2 34:5 36:81 37:1838
38:908 39:2 40:181 41:3243 42:249 44:14
46:2029 47:6 49:679 50:845 52:12 54:39
55:3 56:2 57:26 58:1162 59:605 60:361
61:1427 62:1186 63:1981 64:4549 65:2353 66:4175
67:2108 68:1088 69:3293 70:857 71:496 72:1990
74:2560 75:325 76:306 77:1168 78:1075 79:650
80:1345 81:1021 82:624 83:588 84:595 85:1259
86:453 87:1010 88:555 89:1726 90:156 91:5635
92:611 93:1621 94:1987 95:1646 96:510 97:342
98:1033 99:43 100:31 101:613 103:3365 105:520
106:143 107:212 108:509 109:1892 110:976 111:1129
112:585 113:787 114:725 115:1019 116:987 117:829
118:1172 119:1293 120:373 121:735 122:1885 123:1220
124:1377 125:1424 128:620 129:324 130:325 131:669
132:349 133:162 134:548 135:67 136:270 137:265
138:348 139:181 140:196 141:325 142:548 143:422
144:502 145:96 146:517 147:403 148:701 149:351
150:157 151:615 152:412 153:200 154:47 155:487
156:282 157:418 158:284 159:762 160:349 161:453
162:749 163:229 164:634 165:571 166:257 167:626
168:1047 169:127 170:1081 171:202 172:25 173:1607
174:648 175:505 176:1237 177:2360 178:1916 179:161
180:1569 181:752 182:1337 183:474 184:652 185:912
186:2565 187:1487 188:1876 189:1351 190:7226 192:7028
193:5639 194:4074 195:3340 196:1336 197:995 198:4692
199:5480 200:6097 201:2514 202:8990 203:8914 204:4515
205:2626 206:2849 207:2898 208:4002 209:3623 210:2947
211:1571 212:2264 213:2018 214:901 215:99 216:5399
217:1680 218:621 219:315 220:1279 221:566 222:326
223:505

End of report
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