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.

Monday, June 17, 2013

[bgp-stats] Routing Table Report - Japan view

* BGP Routing Table Analysis Reports *
Routing Table Report 04:00 +10GMT Tue 18 Jun, 2013

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

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

BGP routing table entries examined: 456107
Prefixes after maximum aggregation: 185892
Deaggregation factor: 2.45
Unique aggregates announced to Internet: 226324
Total ASes present in the Internet Routing Table: 44303
Prefixes per ASN: 10.30
Origin-only ASes present in the Internet Routing Table: 34715
Origin ASes announcing only one prefix: 16161
Transit ASes present in the Internet Routing Table: 5871
Transit-only ASes present in the Internet Routing Table: 143
Average AS path length visible in the Internet Routing Table: 4.6
Max AS path length visible: 55
Max AS path prepend of ASN ( 56484) 51
Prefixes from unregistered ASNs in the Routing Table: 1079
Unregistered ASNs in the Routing Table: 478
Number of 32-bit ASNs allocated by the RIRs: 4794
Number of 32-bit ASNs visible in the Routing Table: 3717
Prefixes from 32-bit ASNs in the Routing Table: 10827
Special use prefixes present in the Routing Table: 25
Prefixes being announced from unallocated address space: 226
Number of addresses announced to Internet: 2641611020
Equivalent to 157 /8s, 115 /16s and 201 /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: 94.6
Total number of prefixes smaller than registry allocations: 160141

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

Prefixes being announced by APNIC Region ASes: 109561
Total APNIC prefixes after maximum aggregation: 33508
APNIC Deaggregation factor: 3.27
Prefixes being announced from the APNIC address blocks: 111086
Unique aggregates announced from the APNIC address blocks: 45261
APNIC Region origin ASes present in the Internet Routing Table: 4853
APNIC Prefixes per ASN: 22.89
APNIC Region origin ASes announcing only one prefix: 1224
APNIC Region transit ASes present in the Internet Routing Table: 818
Average APNIC Region AS path length visible: 4.7
Max APNIC Region AS path length visible: 25
Number of APNIC region 32-bit ASNs visible in the Routing Table: 574
Number of APNIC addresses announced to Internet: 725034464
Equivalent to 43 /8s, 55 /16s and 37 /24s
Percentage of available APNIC address space announced: 84.7

APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319,
58368-59391, 131072-133119
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: 158929
Total ARIN prefixes after maximum aggregation: 80353
ARIN Deaggregation factor: 1.98
Prefixes being announced from the ARIN address blocks: 159536
Unique aggregates announced from the ARIN address blocks: 73997
ARIN Region origin ASes present in the Internet Routing Table: 15734
ARIN Prefixes per ASN: 10.14
ARIN Region origin ASes announcing only one prefix: 5988
ARIN Region transit ASes present in the Internet Routing Table: 1641
Average ARIN Region AS path length visible: 4.1
Max ARIN Region AS path length visible: 27
Number of ARIN region 32-bit ASNs visible in the Routing Table: 19
Number of ARIN addresses announced to Internet: 1081642304
Equivalent to 64 /8s, 120 /16s and 141 /24s
Percentage of available ARIN address space announced: 57.2

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: 117364
Total RIPE prefixes after maximum aggregation: 60096
RIPE Deaggregation factor: 1.95
Prefixes being announced from the RIPE address blocks: 120933
Unique aggregates announced from the RIPE address blocks: 78100
RIPE Region origin ASes present in the Internet Routing Table: 17230
RIPE Prefixes per ASN: 7.02
RIPE Region origin ASes announcing only one prefix: 8175
RIPE Region transit ASes present in the Internet Routing Table: 2838
Average RIPE Region AS path length visible: 5.1
Max RIPE Region AS path length visible: 29
Number of RIPE region 32-bit ASNs visible in the Routing Table: 2355
Number of RIPE addresses announced to Internet: 656559460
Equivalent to 39 /8s, 34 /16s and 77 /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, 196608-199679
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: 48471
Total LACNIC prefixes after maximum aggregation: 9380
LACNIC Deaggregation factor: 5.17
Prefixes being announced from the LACNIC address blocks: 52878
Unique aggregates announced from the LACNIC address blocks: 24816
LACNIC Region origin ASes present in the Internet Routing Table: 1959
LACNIC Prefixes per ASN: 26.99
LACNIC Region origin ASes announcing only one prefix: 582
LACNIC Region transit ASes present in the Internet Routing Table: 361
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: 763
Number of LACNIC addresses announced to Internet: 131854728
Equivalent to 7 /8s, 219 /16s and 241 /24s
Percentage of available LACNIC address space announced: 78.6

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: 10860
Total AfriNIC prefixes after maximum aggregation: 2514
AfriNIC Deaggregation factor: 4.32
Prefixes being announced from the AfriNIC address blocks: 11448
Unique aggregates announced from the AfriNIC address blocks: 3941
AfriNIC Region origin ASes present in the Internet Routing Table: 639
AfriNIC Prefixes per ASN: 17.92
AfriNIC Region origin ASes announcing only one prefix: 192
AfriNIC Region transit ASes present in the Internet Routing Table: 130
Average AfriNIC Region AS path length visible: 4.8
Max AfriNIC Region AS path length visible: 25
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 6
Number of AfriNIC addresses announced to Internet: 46223104
Equivalent to 2 /8s, 193 /16s and 79 /24s
Percentage of available AfriNIC address space announced: 45.9

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 2949 11561 922 Korea Telecom (KIX)
17974 2546 855 91 PT TELEKOMUNIKASI INDONESIA
7545 1999 320 108 TPG Internet Pty Ltd
4755 1744 391 191 TATA Communications formerly
9829 1517 1205 40 BSNL National Internet Backbo
9583 1217 91 503 Sify Limited
7552 1154 1080 13 Vietel Corporation
4808 1144 2124 334 CNCGROUP IP network: China169
9498 1129 309 70 BHARTI Airtel Ltd.
24560 1077 394 164 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 3006 3691 75 bellsouth.net, inc.
18566 2065 382 184 Covad Communications
1785 1992 677 124 PaeTec Communications, Inc.
22773 1984 2927 122 Cox Communications, Inc.
20115 1665 1618 615 Charter Communications
4323 1624 1138 405 Time Warner Telecom
701 1534 11143 799 UUNET Technologies, Inc.
30036 1334 300 643 Mediacom Communications Corp
7018 1299 11039 833 AT&T WorldNet Services
11492 1218 216 359 Cable One

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 1722 544 16 Corbina telecom
34984 1276 244 222 BILISIM TELEKOM
2118 1069 97 13 EUnet/RELCOM Autonomous Syste
20940 897 315 700 Akamai Technologies European
13188 824 98 85 Educational Network
31148 805 41 26 FreeNet ISP
8551 772 370 44 Bezeq International
6830 766 2376 440 UPC Distribution Services
12479 677 786 59 Uni2 Autonomous System
34744 676 173 59 SC GVM SISTEM 2003 SRL

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 2787 1542 147 NET Servicos de Comunicao S.A
10620 2661 418 209 TVCABLE BOGOTA
7303 1732 1155 221 Telecom Argentina Stet-France
8151 1283 2721 401 UniNet S.A. de C.V.
18881 996 844 20 Global Village Telecom
6503 864 434 64 AVANTEL, S.A.
27947 843 89 107 Telconet S.A
3816 714 306 85 Empresa Nacional de Telecomun
7738 698 1370 35 Telecomunicacoes da Bahia S.A
6147 665 374 25 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 1237 80 4 MOBITEL
24863 882 274 31 LINKdotNET AS number
6713 537 617 25 Itissalat Al-MAGHRIB
8452 465 956 9 TEDATA
24835 344 80 8 RAYA Telecom - Egypt
3741 260 922 218 The Internet Solution
15706 222 32 6 Sudatel Internet Exchange Aut
29571 208 17 12 Ci Telecom Autonomous system
12258 192 28 66 Vodacom Internet Company
29975 191 667 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
6389 3006 3691 75 bellsouth.net, inc.
4766 2949 11561 922 Korea Telecom (KIX)
28573 2787 1542 147 NET Servicos de Comunicao S.A
10620 2661 418 209 TVCABLE BOGOTA
17974 2546 855 91 PT TELEKOMUNIKASI INDONESIA
18566 2065 382 184 Covad Communications
7545 1999 320 108 TPG Internet Pty Ltd
1785 1992 677 124 PaeTec Communications, Inc.
22773 1984 2927 122 Cox Communications, Inc.
4755 1744 391 191 TATA Communications formerly

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

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

ASN No of nets Net Savings Description
28573 2787 2640 NET Servicos de Comunicao S.A
17974 2546 2455 PT TELEKOMUNIKASI INDONESIA
10620 2661 2452 TVCABLE BOGOTA
4766 2949 2027 Korea Telecom (KIX)
7545 1999 1891 TPG Internet Pty Ltd
18566 2065 1881 Covad Communications
1785 1992 1868 PaeTec Communications, Inc.
22773 1984 1862 Cox Communications, Inc.
8402 1722 1706 Corbina telecom
4755 1744 1553 TATA Communications formerly

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
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
26064 UNALLOCATED 12.149.37.0/24 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
128.0.0.0/24 2876 Jump Management SRL
128.0.16.0/21 43568 RIPE Network Coordination Cen
128.0.24.0/21 41794 Altline LLC
128.0.46.0/23 39743 Mobimax Telecom SRL
128.0.53.0/24 60993 Totalsoft SA
128.0.54.0/24 60972 Carpatair SA
128.0.55.0/24 48571 SC efectRO SRL
128.0.57.0/24 60993 Totalsoft SA
128.0.58.0/23 9050 RTD-ROMTELECOM Autonomous Sys
128.0.60.0/24 9050 RTD-ROMTELECOM Autonomous Sys

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

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

Network Origin AS Description
62.61.220.0/24 24974 Tachyon Europe BV - Wireless
62.61.221.0/24 24974 Tachyon Europe BV - Wireless
64.185.224.0/24 27431 JTL Networks Inc.
64.185.225.0/24 27431 JTL Networks Inc.
64.185.226.0/24 27431 JTL Networks Inc.
64.185.227.0/24 27431 JTL Networks Inc.
64.185.228.0/24 27431 JTL Networks Inc.
64.185.229.0/24 27431 JTL Networks Inc.
64.185.230.0/24 27431 JTL Networks Inc.
64.185.231.0/24 27431 JTL Networks Inc.

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 /8:17 /9:11 /10:30 /11:91 /12:250
/13:483 /14:900 /15:1602 /16:12703 /17:6647 /18:11153
/19:22132 /20:32063 /21:34405 /22:47611 /23:42314 /24:239709
/25:1315 /26:1668 /27:856 /28:46 /29:65 /30:19
/31:0 /32:17

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

ASN No of nets Total ann. Description
18566 2016 2065 Covad Communications
6389 1725 3006 bellsouth.net, inc.
8402 1419 1722 Corbina telecom
22773 1292 1984 Cox Communications, Inc.
36998 1231 1237 MOBITEL
30036 1202 1334 Mediacom Communications Corp
11492 1180 1218 Cable One
1785 1062 1992 PaeTec Communications, Inc.
6983 1008 1135 ITC^Deltacom
10620 991 2661 TVCABLE BOGOTA

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

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

1:830 2:838 3:3 4:19 5:794 6:13
8:554 12:1925 13:3 14:836 15:11 16:2
17:10 20:17 23:371 24:1766 27:1473 31:1319
32:43 33:2 34:5 36:40 37:1868 38:874
39:2 40:170 41:2760 42:196 44:7 46:1936
47:2 49:656 50:736 52:12 54:35 55:8
57:27 58:1158 59:575 60:314 61:1403 62:1132
63:2025 64:4320 65:2160 66:4183 67:2049 68:1081
69:3257 70:785 71:488 72:1915 74:2476 75:323
76:303 77:1134 78:1051 79:615 80:1277 81:1011
82:626 83:577 84:541 85:1140 86:451 87:991
88:537 89:1742 90:147 91:5522 92:600 93:1731
94:1874 95:1662 96:514 97:345 98:1011 99:42
100:30 101:329 103:2785 105:517 106:146 107:208
108:514 109:1838 110:904 111:1043 112:543 113:814
114:709 115:965 116:963 117:798 118:1093 119:1311
120:388 121:733 122:1800 123:1218 124:1372 125:1375
128:638 129:223 130:326 131:666 132:359 133:155
134:255 135:67 136:222 137:243 138:359 139:191
140:210 141:332 142:533 143:379 144:497 145:93
146:505 147:369 148:686 149:371 150:158 151:523
152:419 153:189 154:42 155:412 156:268 157:397
158:279 159:732 160:343 161:446 162:437 163:221
164:599 165:495 166:273 167:595 168:1028 169:129
170:1052 171:182 172:21 173:1583 174:537 175:468
176:1001 177:2076 178:1869 179:34 180:1461 181:459
182:1216 183:386 184:693 185:544 186:2289 187:1270
188:2154 189:1260 190:6865 192:6736 193:5671 194:4593
195:3434 196:1359 197:927 198:4487 199:5340 200:5993
201:2238 202:8819 203:8910 204:4516 205:2572 206:2794
207:2848 208:4043 209:3619 210:2958 211:1508 212:2183
213:1970 214:930 215:99 216:5235 217:1624 218:617
219:336 220:1282 221:557 222:322 223:458

End of report
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