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.

Sunday, October 6, 2013

[bgp-stats] Routing Table Report - Japan view

* BGP Routing Table Analysis Reports *
Routing Table Report 04:00 +10GMT Mon 07 Oct, 2013

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

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

BGP routing table entries examined: 468914
Prefixes after maximum aggregation: 189137
Deaggregation factor: 2.48
Unique aggregates announced to Internet: 232463
Total ASes present in the Internet Routing Table: 45131
Prefixes per ASN: 10.39
Origin-only ASes present in the Internet Routing Table: 35242
Origin ASes announcing only one prefix: 16260
Transit ASes present in the Internet Routing Table: 5907
Transit-only ASes present in the Internet Routing Table: 165
Average AS path length visible in the Internet Routing Table: 4.6
Max AS path length visible: 30
Max AS path prepend of ASN ( 55644) 25
Prefixes from unregistered ASNs in the Routing Table: 388
Unregistered ASNs in the Routing Table: 214
Number of 32-bit ASNs allocated by the RIRs: 5154
Number of 32-bit ASNs visible in the Routing Table: 3982
Prefixes from 32-bit ASNs in the Routing Table: 12283
Special use prefixes present in the Routing Table: 1
Prefixes being announced from unallocated address space: 680
Number of addresses announced to Internet: 2647822612
Equivalent to 157 /8s, 210 /16s and 145 /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: 164129

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

Prefixes being announced by APNIC Region ASes: 111153
Total APNIC prefixes after maximum aggregation: 33831
APNIC Deaggregation factor: 3.29
Prefixes being announced from the APNIC address blocks: 113193
Unique aggregates announced from the APNIC address blocks: 46842
APNIC Region origin ASes present in the Internet Routing Table: 4870
APNIC Prefixes per ASN: 23.24
APNIC Region origin ASes announcing only one prefix: 1216
APNIC Region transit ASes present in the Internet Routing Table: 822
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: 696
Number of APNIC addresses announced to Internet: 728354304
Equivalent to 43 /8s, 105 /16s and 206 /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: 162845
Total ARIN prefixes after maximum aggregation: 81559
ARIN Deaggregation factor: 2.00
Prefixes being announced from the ARIN address blocks: 163344
Unique aggregates announced from the ARIN address blocks: 75912
ARIN Region origin ASes present in the Internet Routing Table: 15901
ARIN Prefixes per ASN: 10.27
ARIN Region origin ASes announcing only one prefix: 6023
ARIN Region transit ASes present in the Internet Routing Table: 1662
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: 1073190144
Equivalent to 63 /8s, 247 /16s and 149 /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: 118872
Total RIPE prefixes after maximum aggregation: 61278
RIPE Deaggregation factor: 1.94
Prefixes being announced from the RIPE address blocks: 122424
Unique aggregates announced from the RIPE address blocks: 78799
RIPE Region origin ASes present in the Internet Routing Table: 17459
RIPE Prefixes per ASN: 7.01
RIPE Region origin ASes announcing only one prefix: 8262
RIPE Region transit ASes present in the Internet Routing Table: 2815
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: 2409
Number of RIPE addresses announced to Internet: 656636644
Equivalent to 39 /8s, 35 /16s and 122 /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: 52065
Total LACNIC prefixes after maximum aggregation: 9846
LACNIC Deaggregation factor: 5.29
Prefixes being announced from the LACNIC address blocks: 57092
Unique aggregates announced from the LACNIC address blocks: 26324
LACNIC Region origin ASes present in the Internet Routing Table: 2035
LACNIC Prefixes per ASN: 28.06
LACNIC Region origin ASes announcing only one prefix: 567
LACNIC Region transit ASes present in the Internet Routing Table: 385
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: 849
Number of LACNIC addresses announced to Internet: 140060208
Equivalent to 8 /8s, 89 /16s and 38 /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: 11542
Total AfriNIC prefixes after maximum aggregation: 2532
AfriNIC Deaggregation factor: 4.56
Prefixes being announced from the AfriNIC address blocks: 12181
Unique aggregates announced from the AfriNIC address blocks: 4004
AfriNIC Region origin ASes present in the Internet Routing Table: 653
AfriNIC Prefixes per ASN: 18.65
AfriNIC Region origin ASes announcing only one prefix: 192
AfriNIC Region transit ASes present in the Internet Routing Table: 136
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: 47751936
Equivalent to 2 /8s, 216 /16s and 163 /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 11559 945 Korea Telecom (KIX)
17974 2718 903 90 PT TELEKOMUNIKASI INDONESIA
7545 2084 321 112 TPG Internet Pty Ltd
4755 1769 391 187 TATA Communications formerly
9829 1551 1238 43 BSNL National Internet Backbo
9583 1237 93 507 Sify Limited
9498 1196 309 72 BHARTI Airtel Ltd.
4808 1191 2131 347 CNCGROUP IP network: China169
7552 1107 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 2050 2941 135 Cox Communications, Inc.
1785 2019 679 125 PaeTec Communications, Inc.
20115 1682 1651 619 Charter Communications
4323 1624 1104 419 Time Warner Telecom
701 1516 11148 789 UUNET Technologies, Inc.
30036 1338 301 638 Mediacom Communications Corp
7018 1332 17515 858 AT&T WorldNet Services
6983 1294 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 1852 544 17 OJSC "Vimpelcom"
34984 1364 244 221 TELLCOM ILETISIM HIZMETLERI A
20940 1040 383 801 Akamai Technologies European
31148 992 44 19 FreeNet ISP
6830 892 2365 426 UPC Distribution Services
13188 849 99 67 TOV "Bank-Inform"
8551 750 370 41 Bezeq International
12479 680 799 49 Uni2 Autonomous System
35228 528 246 16 Avatar Broadband Limited
3320 514 8418 406 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 3363 1734 88 NET Servicos de Comunicao S.A
10620 2598 423 248 TVCABLE BOGOTA
7303 1724 1135 233 Telecom Argentina Stet-France
18881 1463 844 20 Global Village Telecom
8151 1341 2807 416 UniNet S.A. de C.V.
11830 865 364 15 Instituto Costarricense de El
6503 859 434 62 AVANTEL, S.A.
27947 839 93 91 Telconet S.A
6147 799 373 27 Telefonica Del Peru
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 882 306 30 LINKdotNET AS number
6713 554 633 26 Itissalat Al-MAGHRIB
8452 421 956 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 3363 1734 88 NET Servicos de Comunicao S.A
6389 3060 3689 59 BellSouth.net Inc.
4766 2943 11559 945 Korea Telecom (KIX)
17974 2718 903 90 PT TELEKOMUNIKASI INDONESIA
10620 2598 423 248 TVCABLE BOGOTA
7545 2084 321 112 TPG Internet Pty Ltd
18566 2066 382 184 Covad Communications
22773 2050 2941 135 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 2718 2628 PT TELEKOMUNIKASI INDONESIA
10620 2598 2350 TVCABLE BOGOTA
4766 2943 1998 Korea Telecom (KIX)
7545 2084 1972 TPG Internet Pty Ltd
22773 2050 1915 Cox Communications, Inc.
1785 2019 1894 PaeTec Communications, Inc.
18566 2066 1882 Covad Communications
36998 1864 1859 Sudanese Mobile Telephone (ZA
8402 1852 1835 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
/13:482 /14:913 /15:1628 /16:12823 /17:6703 /18:11218
/19:22976 /20:32544 /21:35317 /22:49764 /23:43022 /24:248585
/25:900 /26:999 /27:480 /28:49 /29:78 /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 1573 1852 OJSC "Vimpelcom"
22773 1323 2050 Cox Communications, Inc.
30036 1195 1338 Mediacom Communications Corp
11492 1194 1235 Cable One
1785 1085 2019 PaeTec Communications, Inc.
6983 1034 1294 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)
----------------------------------------------

1:831 2:856 3:3 4:17 5:993 6:19
8:615 12:1895 13:3 14:871 15:11 16:3
17:14 18:19 20:21 23:451 24:1719 27:1593
31:1478 32:45 33:2 34:5 36:81 37:1823
38:906 39:2 40:179 41:3235 42:249 44:14
46:2015 47:6 49:678 50:841 52:12 54:39
55:3 57:26 58:1162 59:612 60:353 61:1426
62:1183 63:1974 64:4546 65:2351 66:4178 67:2076
68:1089 69:3296 70:858 71:496 72:1991 74:2559
75:326 76:306 77:1164 78:1059 79:647 80:1333
81:1020 82:625 83:587 84:594 85:1256 86:454
87:1017 88:555 89:1723 90:157 91:5611 92:612
93:1626 94:1986 95:1653 96:511 97:344 98:1034
99:43 100:31 101:611 103:3371 105:520 106:143
107:212 108:509 109:1878 110:961 111:1128 112:582
113:790 114:730 115:1021 116:985 117:833 118:1168
119:1298 120:369 121:736 122:1885 123:1219 124:1361
125:1424 128:616 129:325 130:323 131:671 132:349
133:162 134:548 135:67 136:273 137:266 138:348
139:180 140:196 141:324 142:548 143:408 144:498
145:103 146:516 147:402 148:701 149:351 150:157
151:615 152:412 153:200 154:47 155:486 156:282
157:421 158:284 159:763 160:349 161:452 162:740
163:227 164:633 165:574 166:258 167:625 168:1049
169:127 170:1077 171:202 172:25 173:1614 174:665
175:506 176:1245 177:2388 178:1919 179:158 180:1569
181:749 182:1333 183:481 184:657 185:909 186:2609
187:1487 188:1877 189:1340 190:7210 192:6998 193:5619
194:4062 195:3338 196:1316 197:985 198:4693 199:5484
200:6063 201:2524 202:8978 203:8916 204:4501 205:2623
206:2852 207:2893 208:3998 209:3624 210:2951 211:1575
212:2265 213:2010 214:896 215:99 216:5414 217:1670
218:621 219:315 220:1279 221:566 222:326 223:504


End of report
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