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.

Saturday, September 28, 2013

[bgp-stats] Routing Table Report - Japan view

* BGP Routing Table Analysis Reports *
Routing Table Report 04:00 +10GMT Sun 29 Sep, 2013

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

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

BGP routing table entries examined: 468794
Prefixes after maximum aggregation: 188902
Deaggregation factor: 2.48
Unique aggregates announced to Internet: 232258
Total ASes present in the Internet Routing Table: 45073
Prefixes per ASN: 10.40
Origin-only ASes present in the Internet Routing Table: 35208
Origin ASes announcing only one prefix: 16264
Transit ASes present in the Internet Routing Table: 5903
Transit-only ASes present in the Internet Routing Table: 162
Average AS path length visible in the Internet Routing Table: 4.6
Max AS path length visible: 30
Max AS path prepend of ASN ( 36992) 22
Prefixes from unregistered ASNs in the Routing Table: 285
Unregistered ASNs in the Routing Table: 158
Number of 32-bit ASNs allocated by the RIRs: 5116
Number of 32-bit ASNs visible in the Routing Table: 3962
Prefixes from 32-bit ASNs in the Routing Table: 12170
Special use prefixes present in the Routing Table: 1
Prefixes being announced from unallocated address space: 594
Number of addresses announced to Internet: 2645167764
Equivalent to 157 /8s, 170 /16s and 14 /24s
Percentage of available address space announced: 71.4
Percentage of allocated address space announced: 71.4
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: 163976

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

Prefixes being announced by APNIC Region ASes: 111578
Total APNIC prefixes after maximum aggregation: 33765
APNIC Deaggregation factor: 3.30
Prefixes being announced from the APNIC address blocks: 113612
Unique aggregates announced from the APNIC address blocks: 46705
APNIC Region origin ASes present in the Internet Routing Table: 4872
APNIC Prefixes per ASN: 23.32
APNIC Region origin ASes announcing only one prefix: 1217
APNIC Region transit ASes present in the Internet Routing Table: 830
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: 692
Number of APNIC addresses announced to Internet: 727770880
Equivalent to 43 /8s, 96 /16s and 231 /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: 162701
Total ARIN prefixes after maximum aggregation: 81450
ARIN Deaggregation factor: 2.00
Prefixes being announced from the ARIN address blocks: 163229
Unique aggregates announced from the ARIN address blocks: 75896
ARIN Region origin ASes present in the Internet Routing Table: 15893
ARIN Prefixes per ASN: 10.27
ARIN Region origin ASes announcing only one prefix: 6016
ARIN Region transit ASes present in the Internet Routing Table: 1653
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: 22
Number of ARIN addresses announced to Internet: 1072652160
Equivalent to 63 /8s, 239 /16s and 95 /24s
Percentage of available ARIN address space announced: 56.7

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: 118664
Total RIPE prefixes after maximum aggregation: 61259
RIPE Deaggregation factor: 1.94
Prefixes being announced from the RIPE address blocks: 122251
Unique aggregates announced from the RIPE address blocks: 78939
RIPE Region origin ASes present in the Internet Routing Table: 17452
RIPE Prefixes per ASN: 7.00
RIPE Region origin ASes announcing only one prefix: 8275
RIPE Region transit ASes present in the Internet Routing Table: 2804
Average RIPE Region AS path length visible: 5.2
Max RIPE Region AS path length visible: 30
Number of RIPE region 32-bit ASNs visible in the Routing Table: 2404
Number of RIPE addresses announced to Internet: 657038052
Equivalent to 39 /8s, 41 /16s and 154 /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: 51904
Total LACNIC prefixes after maximum aggregation: 9825
LACNIC Deaggregation factor: 5.28
Prefixes being announced from the LACNIC address blocks: 56846
Unique aggregates announced from the LACNIC address blocks: 26225
LACNIC Region origin ASes present in the Internet Routing Table: 2026
LACNIC Prefixes per ASN: 28.06
LACNIC Region origin ASes announcing only one prefix: 568
LACNIC Region transit ASes present in the Internet Routing Table: 382
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: 838
Number of LACNIC addresses announced to Internet: 139361840
Equivalent to 8 /8s, 78 /16s and 126 /24s
Percentage of available LACNIC address space announced: 83.1

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: 11643
Total AfriNIC prefixes after maximum aggregation: 2528
AfriNIC Deaggregation factor: 4.61
Prefixes being announced from the AfriNIC address blocks: 12262
Unique aggregates announced from the AfriNIC address blocks: 3981
AfriNIC Region origin ASes present in the Internet Routing Table: 651
AfriNIC Prefixes per ASN: 18.84
AfriNIC Region origin ASes announcing only one prefix: 188
AfriNIC Region transit ASes present in the Internet Routing Table: 138
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: 46745344
Equivalent to 2 /8s, 201 /16s and 71 /24s
Percentage of available AfriNIC address space announced: 46.4

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 2942 11562 943 Korea Telecom (KIX)
17974 2691 903 91 PT TELEKOMUNIKASI INDONESIA
7545 2079 320 111 TPG Internet Pty Ltd
4755 1788 393 194 TATA Communications formerly
9829 1534 1236 41 BSNL National Internet Backbo
9583 1233 93 506 Sify Limited
7552 1219 1178 18 Vietel Corporation
9498 1196 309 73 BHARTI Airtel Ltd.
4808 1192 2131 347 CNCGROUP IP network: China169
24560 1090 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 3061 3689 59 BellSouth.net Inc.
18566 2066 382 184 Covad Communications
22773 2038 2933 124 Cox Communications, Inc.
1785 2019 679 125 PaeTec Communications, Inc.
20115 1680 1651 628 Charter Communications
4323 1616 1103 417 Time Warner Telecom
701 1523 11149 795 UUNET Technologies, Inc.
30036 1348 304 619 Mediacom Communications Corp
7018 1304 11244 820 AT&T WorldNet Services
6983 1286 772 579 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 1766 544 17 OJSC "Vimpelcom"
34984 1363 244 221 TELLCOM ILETISIM HIZMETLERI A
20940 1033 377 795 Akamai Technologies European
31148 989 43 19 FreeNet ISP
6830 891 2365 425 UPC Distribution Services
13188 849 99 67 TOV "Bank-Inform"
8551 747 370 41 Bezeq International
12479 676 799 49 Uni2 Autonomous System
35228 528 246 16 Avatar Broadband Limited
3320 509 8415 405 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 3344 1732 94 NET Servicos de Comunicao S.A
10620 2574 421 260 TVCABLE BOGOTA
7303 1713 1133 228 Telecom Argentina Stet-France
18881 1441 844 20 Global Village Telecom
8151 1338 2801 413 UniNet S.A. de C.V.
11830 865 364 15 Instituto Costarricense de El
27947 835 93 90 Telconet S.A
6503 833 434 63 AVANTEL, S.A.
7738 780 1498 36 Telecomunicacoes da Bahia S.A
6147 770 376 21 Telefonica Del Peru

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 880 306 30 LINKdotNET AS number
6713 554 633 26 Itissalat Al-MAGHRIB
8452 435 956 9 TEDATA
24835 291 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 3344 1732 94 NET Servicos de Comunicao S.A
6389 3061 3689 59 BellSouth.net Inc.
4766 2942 11562 943 Korea Telecom (KIX)
17974 2691 903 91 PT TELEKOMUNIKASI INDONESIA
10620 2574 421 260 TVCABLE BOGOTA
7545 2079 320 111 TPG Internet Pty Ltd
18566 2066 382 184 Covad Communications
22773 2038 2933 124 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 3061 3002 BellSouth.net Inc.
17974 2691 2600 PT TELEKOMUNIKASI INDONESIA
10620 2574 2314 TVCABLE BOGOTA
4766 2942 1999 Korea Telecom (KIX)
7545 2079 1968 TPG Internet Pty Ltd
22773 2038 1914 Cox Communications, Inc.
1785 2019 1894 PaeTec Communications, Inc.
18566 2066 1882 Covad Communications
36998 1864 1859 Sudanese Mobile Telephone (ZA
8402 1766 1749 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 /12:250
/13:479 /14:916 /15:1628 /16:12807 /17:6698 /18:11209
/19:22945 /20:32592 /21:35212 /22:49722 /23:43051 /24:248629
/25:883 /26:987 /27:476 /28:48 /29:78 /30:20
/31:0 /32:14

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 1711 3061 BellSouth.net Inc.
8402 1488 1766 OJSC "Vimpelcom"
22773 1324 2038 Cox Communications, Inc.
30036 1206 1348 Mediacom Communications Corp
11492 1190 1231 Cable One
1785 1085 2019 PaeTec Communications, Inc.
6983 1026 1286 ITC^Deltacom
22561 963 1240 Digital Teleport, Inc

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

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

1:849 2:852 3:3 4:17 5:975 6:19
8:609 12:1892 13:3 14:871 15:11 16:3
17:13 18:19 20:21 23:446 24:1728 27:1586
31:1480 32:45 33:2 34:5 36:80 37:1821
38:908 39:3 40:179 41:3255 42:250 44:13
46:2015 47:5 49:677 50:843 52:12 54:39
55:5 57:26 58:1166 59:641 60:344 61:1496
62:1179 63:1992 64:4554 65:2357 66:4180 67:2069
68:1086 69:3325 70:868 71:495 72:2001 74:2561
75:330 76:304 77:1167 78:1055 79:643 80:1329
81:1033 82:624 83:584 84:590 85:1284 86:456
87:998 88:552 89:1728 90:158 91:5651 92:608
93:1602 94:1972 95:1584 96:517 97:343 98:1043
99:43 100:31 101:610 103:3373 105:520 106:143
107:207 108:510 109:1885 110:970 111:1123 112:579
113:800 114:735 115:1086 116:990 117:821 118:1165
119:1292 120:371 121:853 122:1885 123:1248 124:1386
125:1408 128:617 129:321 130:321 131:654 132:347
133:161 134:542 135:67 136:272 137:267 138:349
139:181 140:182 141:325 142:549 143:393 144:500
145:100 146:513 147:403 148:703 149:353 150:158
151:596 152:411 153:197 154:48 155:485 156:279
157:420 158:285 159:768 160:348 161:451 162:716
163:229 164:632 165:574 166:258 167:621 168:1048
169:128 170:1077 171:202 172:25 173:1614 174:664
175:504 176:1221 177:2349 178:1894 179:141 180:1541
181:744 182:1324 183:462 184:654 185:896 186:2599
187:1447 188:1901 189:1337 190:7166 192:6961 193:5631
194:4076 195:3343 196:1326 197:997 198:4689 199:5472
200:6067 201:2550 202:9002 203:8921 204:4503 205:2628
206:2868 207:2900 208:4014 209:3617 210:2949 211:1571
212:2256 213:2026 214:906 215:99 216:5339 217:1663
218:623 219:343 220:1277 221:565 222:326 223:504


End of report
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