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, July 2, 2013

[bgp-stats] Routing Table Report - Japan view

* BGP Routing Table Analysis Reports *
Routing Table Report 04:00 +10GMT Wed 03 Jul, 2013

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

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

BGP routing table entries examined: 457323
Prefixes after maximum aggregation: 185976
Deaggregation factor: 2.46
Unique aggregates announced to Internet: 226905
Total ASes present in the Internet Routing Table: 44378
Prefixes per ASN: 10.31
Origin-only ASes present in the Internet Routing Table: 34741
Origin ASes announcing only one prefix: 16137
Transit ASes present in the Internet Routing Table: 5880
Transit-only ASes present in the Internet Routing Table: 147
Average AS path length visible in the Internet Routing Table: 4.6
Max AS path length visible: 29
Max AS path prepend of ASN ( 36992) 22
Prefixes from unregistered ASNs in the Routing Table: 1911
Unregistered ASNs in the Routing Table: 883
Number of 32-bit ASNs allocated by the RIRs: 4839
Number of 32-bit ASNs visible in the Routing Table: 3757
Prefixes from 32-bit ASNs in the Routing Table: 11056
Special use prefixes present in the Routing Table: 24
Prefixes being announced from unallocated address space: 218
Number of addresses announced to Internet: 2626818892
Equivalent to 156 /8s, 146 /16s and 19 /24s
Percentage of available address space announced: 71.0
Percentage of allocated address space announced: 71.0
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 94.7
Total number of prefixes smaller than registry allocations: 160194

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

Prefixes being announced by APNIC Region ASes: 109797
Total APNIC prefixes after maximum aggregation: 33646
APNIC Deaggregation factor: 3.26
Prefixes being announced from the APNIC address blocks: 111641
Unique aggregates announced from the APNIC address blocks: 45712
APNIC Region origin ASes present in the Internet Routing Table: 4847
APNIC Prefixes per ASN: 23.03
APNIC Region origin ASes announcing only one prefix: 1215
APNIC Region transit ASes present in the Internet Routing Table: 827
Average APNIC Region AS path length visible: 4.6
Max APNIC Region AS path length visible: 20
Number of APNIC region 32-bit ASNs visible in the Routing Table: 591
Number of APNIC addresses announced to Internet: 725378848
Equivalent to 43 /8s, 60 /16s and 103 /24s
Percentage of available APNIC address space announced: 84.8

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: 158801
Total ARIN prefixes after maximum aggregation: 80329
ARIN Deaggregation factor: 1.98
Prefixes being announced from the ARIN address blocks: 159469
Unique aggregates announced from the ARIN address blocks: 73809
ARIN Region origin ASes present in the Internet Routing Table: 15743
ARIN Prefixes per ASN: 10.13
ARIN Region origin ASes announcing only one prefix: 5989
ARIN Region transit ASes present in the Internet Routing Table: 1644
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: 1065151296
Equivalent to 63 /8s, 124 /16s and 235 /24s
Percentage of available ARIN address space announced: 56.3

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: 117829
Total RIPE prefixes after maximum aggregation: 60114
RIPE Deaggregation factor: 1.96
Prefixes being announced from the RIPE address blocks: 121226
Unique aggregates announced from the RIPE address blocks: 78420
RIPE Region origin ASes present in the Internet Routing Table: 17249
RIPE Prefixes per ASN: 7.03
RIPE Region origin ASes announcing only one prefix: 8168
RIPE Region transit ASes present in the Internet Routing Table: 2830
Average RIPE Region AS path length visible: 5.1
Max RIPE Region AS path length visible: 28
Number of RIPE region 32-bit ASNs visible in the Routing Table: 2370
Number of RIPE addresses announced to Internet: 656735844
Equivalent to 39 /8s, 36 /16s and 254 /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, 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: 48719
Total LACNIC prefixes after maximum aggregation: 9327
LACNIC Deaggregation factor: 5.22
Prefixes being announced from the LACNIC address blocks: 53120
Unique aggregates announced from the LACNIC address blocks: 24802
LACNIC Region origin ASes present in the Internet Routing Table: 1963
LACNIC Prefixes per ASN: 27.06
LACNIC Region origin ASes announcing only one prefix: 577
LACNIC Region transit ASes present in the Internet Routing Table: 358
Average LACNIC Region AS path length visible: 4.7
Max LACNIC Region AS path length visible: 29
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 771
Number of LACNIC addresses announced to Internet: 132943752
Equivalent to 7 /8s, 236 /16s and 143 /24s
Percentage of available LACNIC address space announced: 79.2

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: 11030
Total AfriNIC prefixes after maximum aggregation: 2519
AfriNIC Deaggregation factor: 4.38
Prefixes being announced from the AfriNIC address blocks: 11649
Unique aggregates announced from the AfriNIC address blocks: 3961
AfriNIC Region origin ASes present in the Internet Routing Table: 644
AfriNIC Prefixes per ASN: 18.09
AfriNIC Region origin ASes announcing only one prefix: 188
AfriNIC Region transit ASes present in the Internet Routing Table: 134
Average AfriNIC Region AS path length visible: 4.9
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: 46317568
Equivalent to 2 /8s, 194 /16s and 192 /24s
Percentage of available AfriNIC address space announced: 46.0

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 2938 11561 921 Korea Telecom (KIX)
17974 2566 855 92 PT TELEKOMUNIKASI INDONESIA
7545 2020 320 109 TPG Internet Pty Ltd
4755 1750 391 192 TATA Communications formerly
9829 1519 1205 40 BSNL National Internet Backbo
9583 1460 117 563 Sify Limited
7552 1160 1080 13 Vietel Corporation
4808 1148 2124 335 CNCGROUP IP network: China169
9498 1147 309 71 BHARTI Airtel Ltd.
24560 1080 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 2990 3691 69 bellsouth.net, inc.
18566 2066 382 184 Covad Communications
1785 1995 678 126 PaeTec Communications, Inc.
22773 1987 2927 123 Cox Communications, Inc.
20115 1665 1617 619 Charter Communications
4323 1617 1137 400 Time Warner Telecom
701 1531 11127 798 UUNET Technologies, Inc.
30036 1345 302 647 Mediacom Communications Corp
7018 1303 11040 825 AT&T WorldNet Services
11492 1223 218 359 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 1651 544 16 Corbina telecom
34984 1286 244 222 BILISIM TELEKOM
2118 1271 97 13 EUnet/RELCOM Autonomous Syste
20940 906 318 711 Akamai Technologies European
13188 825 98 79 Educational Network
31148 806 40 25 FreeNet ISP
8551 779 370 45 Bezeq International
6830 766 2376 440 UPC Distribution Services
12479 673 789 57 Uni2 Autonomous System
34744 657 171 75 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 2890 1574 106 NET Servicos de Comunicao S.A
10620 2678 420 200 TVCABLE BOGOTA
7303 1731 1155 220 Telecom Argentina Stet-France
8151 1263 2727 382 UniNet S.A. de C.V.
18881 1070 844 20 Global Village Telecom
6503 865 434 63 AVANTEL, S.A.
27947 819 94 93 Telconet S.A
3816 717 306 85 Empresa Nacional de Telecomun
7738 698 1370 35 Telecomunicacoes da Bahia S.A
11172 616 88 65 Servicios Alestra S.A de C.V

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 1172 80 4 MOBITEL
24863 883 274 30 LINKdotNET AS number
6713 542 617 25 Itissalat Al-MAGHRIB
8452 456 956 9 TEDATA
24835 345 80 8 RAYA Telecom - Egypt
3741 259 922 218 The Internet Solution
15706 219 32 6 Sudatel Internet Exchange Aut
29571 219 17 12 Ci Telecom Autonomous system
37054 211 11 5 Data Telecom Service
36992 203 527 21 Etisalat MISR

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 2990 3691 69 bellsouth.net, inc.
4766 2938 11561 921 Korea Telecom (KIX)
28573 2890 1574 106 NET Servicos de Comunicao S.A
10620 2678 420 200 TVCABLE BOGOTA
17974 2566 855 92 PT TELEKOMUNIKASI INDONESIA
18566 2066 382 184 Covad Communications
7545 2020 320 109 TPG Internet Pty Ltd
1785 1995 678 126 PaeTec Communications, Inc.
22773 1987 2927 123 Cox Communications, Inc.
4755 1750 391 192 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 2890 2784 NET Servicos de Comunicao S.A
10620 2678 2478 TVCABLE BOGOTA
17974 2566 2474 PT TELEKOMUNIKASI INDONESIA
4766 2938 2017 Korea Telecom (KIX)
7545 2020 1911 TPG Internet Pty Ltd
18566 2066 1882 Covad Communications
1785 1995 1869 PaeTec Communications, Inc.
22773 1987 1864 Cox Communications, Inc.
8402 1651 1635 Corbina telecom
4755 1750 1558 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 /8:16 /9:11 /10:30 /11:92 /12:250
/13:482 /14:900 /15:1604 /16:12710 /17:6645 /18:11101
/19:22443 /20:32093 /21:34523 /22:48052 /23:42337 /24:240082
/25:1306 /26:1642 /27:858 /28:45 /29:66 /30:19
/31:0 /32:16

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

ASN No of nets Total ann. Description
18566 2017 2066 Covad Communications
6389 1717 2990 bellsouth.net, inc.
8402 1356 1651 Corbina telecom
22773 1293 1987 Cox Communications, Inc.
30036 1212 1345 Mediacom Communications Corp
11492 1184 1223 Cable One
36998 1140 1172 MOBITEL
1785 1063 1995 PaeTec Communications, Inc.
6983 1015 1145 ITC^Deltacom
10620 997 2678 TVCABLE BOGOTA

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

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

1:839 2:768 3:3 4:19 5:815 6:16
8:563 12:1917 13:3 14:854 15:11 16:3
17:10 20:17 23:294 24:1770 27:1478 31:1310
32:45 33:2 34:5 36:52 37:1864 38:878
39:2 40:171 41:2798 42:203 44:8 46:1913
47:1 49:665 50:753 52:12 54:35 55:6
57:26 58:1156 59:585 60:328 61:1408 62:1137
63:2012 64:4332 65:2162 66:4178 67:2040 68:1078
69:3280 70:837 71:490 72:1926 74:2457 75:324
76:307 77:1113 78:1045 79:617 80:1255 81:1016
82:625 83:593 84:587 85:1178 86:449 87:1010
88:539 89:1750 90:148 91:5504 92:606 93:1736
94:1881 95:1639 96:523 97:345 98:1014 99:42
100:30 101:325 103:2877 105:470 106:138 107:207
108:511 109:1844 110:909 111:1056 112:550 113:816
114:701 115:971 116:959 117:801 118:1115 119:1314
120:384 121:733 122:1798 123:1219 124:1374 125:1383
128:597 129:225 130:306 131:662 132:359 133:155
134:267 135:68 136:223 137:242 138:340 139:190
140:203 141:326 142:541 143:371 144:498 145:94
146:505 147:378 148:670 149:348 150:156 151:504
152:418 153:189 154:24 155:415 156:265 157:399
158:280 159:716 160:344 161:455 162:468 163:223
164:603 165:498 166:253 167:596 168:1042 169:129
170:1059 171:180 172:21 173:1597 174:540 175:472
176:1064 177:2113 178:1861 179:50 180:1463 181:484
182:1253 183:423 184:667 185:598 186:2297 187:1295
188:2058 189:1284 190:6738 192:6760 193:5854 194:4610
195:3459 196:1377 197:943 198:4499 199:5346 200:5999
201:2209 202:8802 203:8874 204:4514 205:2561 206:2807
207:2843 208:4030 209:3625 210:2915 211:1519 212:2177
213:1998 214:907 215:99 216:5246 217:1616 218:620
219:335 220:1280 221:557 222:325 223:448

End of report
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