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, June 22, 2013

[bgp-stats] Routing Table Report - Japan view

* BGP Routing Table Analysis Reports *
Routing Table Report 04:00 +10GMT Sun 23 Jun, 2013

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

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

BGP routing table entries examined: 456618
Prefixes after maximum aggregation: 186145
Deaggregation factor: 2.45
Unique aggregates announced to Internet: 227514
Total ASes present in the Internet Routing Table: 44330
Prefixes per ASN: 10.30
Origin-only ASes present in the Internet Routing Table: 34751
Origin ASes announcing only one prefix: 16154
Transit ASes present in the Internet Routing Table: 5850
Transit-only ASes present in the Internet Routing Table: 142
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: 1402
Unregistered ASNs in the Routing Table: 623
Number of 32-bit ASNs allocated by the RIRs: 4810
Number of 32-bit ASNs visible in the Routing Table: 3729
Prefixes from 32-bit ASNs in the Routing Table: 10895
Special use prefixes present in the Routing Table: 25
Prefixes being announced from unallocated address space: 215
Number of addresses announced to Internet: 2642226220
Equivalent to 157 /8s, 125 /16s and 44 /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: 94.7
Total number of prefixes smaller than registry allocations: 159808

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

Prefixes being announced by APNIC Region ASes: 109751
Total APNIC prefixes after maximum aggregation: 33621
APNIC Deaggregation factor: 3.26
Prefixes being announced from the APNIC address blocks: 111958
Unique aggregates announced from the APNIC address blocks: 46109
APNIC Region origin ASes present in the Internet Routing Table: 4847
APNIC Prefixes per ASN: 23.10
APNIC Region origin ASes announcing only one prefix: 1218
APNIC Region transit ASes present in the Internet Routing Table: 819
Average APNIC Region AS path length visible: 4.8
Max APNIC Region AS path length visible: 25
Number of APNIC region 32-bit ASNs visible in the Routing Table: 582
Number of APNIC addresses announced to Internet: 725030880
Equivalent to 43 /8s, 55 /16s and 23 /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: 158745
Total ARIN prefixes after maximum aggregation: 80364
ARIN Deaggregation factor: 1.98
Prefixes being announced from the ARIN address blocks: 159430
Unique aggregates announced from the ARIN address blocks: 74068
ARIN Region origin ASes present in the Internet Routing Table: 15738
ARIN Prefixes per ASN: 10.13
ARIN Region origin ASes announcing only one prefix: 5991
ARIN Region transit ASes present in the Internet Routing Table: 1639
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: 1081705792
Equivalent to 64 /8s, 121 /16s and 133 /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: 117661
Total RIPE prefixes after maximum aggregation: 60243
RIPE Deaggregation factor: 1.95
Prefixes being announced from the RIPE address blocks: 120596
Unique aggregates announced from the RIPE address blocks: 78358
RIPE Region origin ASes present in the Internet Routing Table: 17241
RIPE Prefixes per ASN: 6.99
RIPE Region origin ASes announcing only one prefix: 8174
RIPE Region transit ASes present in the Internet Routing Table: 2823
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: 2356
Number of RIPE addresses announced to Internet: 656479844
Equivalent to 39 /8s, 33 /16s and 22 /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: 48545
Total LACNIC prefixes after maximum aggregation: 9351
LACNIC Deaggregation factor: 5.19
Prefixes being announced from the LACNIC address blocks: 52913
Unique aggregates announced from the LACNIC address blocks: 24818
LACNIC Region origin ASes present in the Internet Routing Table: 1966
LACNIC Prefixes per ASN: 26.91
LACNIC Region origin ASes announcing only one prefix: 581
LACNIC Region transit ASes present in the Internet Routing Table: 357
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: 766
Number of LACNIC addresses announced to Internet: 132417448
Equivalent to 7 /8s, 228 /16s and 135 /24s
Percentage of available LACNIC address space announced: 78.9

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: 10924
Total AfriNIC prefixes after maximum aggregation: 2526
AfriNIC Deaggregation factor: 4.32
Prefixes being announced from the AfriNIC address blocks: 11506
Unique aggregates announced from the AfriNIC address blocks: 3963
AfriNIC Region origin ASes present in the Internet Routing Table: 640
AfriNIC Prefixes per ASN: 17.98
AfriNIC Region origin ASes announcing only one prefix: 190
AfriNIC Region transit ASes present in the Internet Routing Table: 131
Average AfriNIC Region AS path length visible: 4.7
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: 46296064
Equivalent to 2 /8s, 194 /16s and 108 /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 2944 11561 922 Korea Telecom (KIX)
17974 2556 855 91 PT TELEKOMUNIKASI INDONESIA
7545 2010 320 109 TPG Internet Pty Ltd
4755 1746 391 190 TATA Communications formerly
9829 1518 1205 40 BSNL National Internet Backbo
9583 1290 98 536 Sify Limited
7552 1149 1080 13 Vietel Corporation
4808 1146 2124 334 CNCGROUP IP network: China169
9498 1137 309 71 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 2998 3691 73 bellsouth.net, inc.
18566 2064 382 184 Covad Communications
1785 1994 678 126 PaeTec Communications, Inc.
22773 1983 2927 123 Cox Communications, Inc.
20115 1666 1617 617 Charter Communications
4323 1624 1138 402 Time Warner Telecom
701 1530 11143 798 UUNET Technologies, Inc.
30036 1336 301 645 Mediacom Communications Corp
7018 1299 11039 831 AT&T WorldNet Services
11492 1221 217 360 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 1519 544 16 Corbina telecom
34984 1280 244 222 BILISIM TELEKOM
2118 1069 97 13 EUnet/RELCOM Autonomous Syste
20940 890 308 697 Akamai Technologies European
13188 825 98 79 Educational Network
31148 805 40 25 FreeNet ISP
8551 771 370 44 Bezeq International
6830 766 2376 440 UPC Distribution Services
12479 684 789 57 Uni2 Autonomous System
34744 675 172 76 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 2820 1558 107 NET Servicos de Comunicao S.A
10620 2674 420 199 TVCABLE BOGOTA
7303 1728 1154 218 Telecom Argentina Stet-France
8151 1257 2719 386 UniNet S.A. de C.V.
18881 1002 844 20 Global Village Telecom
6503 864 434 64 AVANTEL, S.A.
27947 819 89 106 Telconet S.A
3816 715 306 85 Empresa Nacional de Telecomun
7738 698 1370 35 Telecomunicacoes da Bahia S.A
6147 663 374 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 883 274 30 LINKdotNET AS number
6713 542 617 25 Itissalat Al-MAGHRIB
8452 464 956 9 TEDATA
24835 344 80 8 RAYA Telecom - Egypt
3741 261 922 219 The Internet Solution
15706 222 32 6 Sudatel Internet Exchange Aut
29571 207 17 12 Ci Telecom Autonomous system
36992 198 527 21 Etisalat MISR
12258 193 28 66 Vodacom Internet Company

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 2998 3691 73 bellsouth.net, inc.
4766 2944 11561 922 Korea Telecom (KIX)
28573 2820 1558 107 NET Servicos de Comunicao S.A
10620 2674 420 199 TVCABLE BOGOTA
17974 2556 855 91 PT TELEKOMUNIKASI INDONESIA
18566 2064 382 184 Covad Communications
7545 2010 320 109 TPG Internet Pty Ltd
1785 1994 678 126 PaeTec Communications, Inc.
22773 1983 2927 123 Cox Communications, Inc.
4755 1746 391 190 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 2820 2713 NET Servicos de Comunicao S.A
10620 2674 2475 TVCABLE BOGOTA
17974 2556 2465 PT TELEKOMUNIKASI INDONESIA
4766 2944 2022 Korea Telecom (KIX)
7545 2010 1901 TPG Internet Pty Ltd
18566 2064 1880 Covad Communications
1785 1994 1868 PaeTec Communications, Inc.
22773 1983 1860 Cox Communications, Inc.
4755 1746 1556 TATA Communications formerly
7303 1728 1510 Telecom Argentina Stet-France

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 /14:899 /15:1603 /16:12702 /17:6650 /18:11179
/19:22185 /20:32048 /21:34453 /22:47667 /23:42287 /24:240140
/25:1299 /26:1630 /27:848 /28:46 /29:65 /30:19
/31:0 /32:16

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

ASN No of nets Total ann. Description
18566 2015 2064 Covad Communications
6389 1721 2998 bellsouth.net, inc.
22773 1289 1983 Cox Communications, Inc.
36998 1231 1237 MOBITEL
8402 1204 1519 Corbina telecom
30036 1203 1336 Mediacom Communications Corp
11492 1183 1221 Cable One
1785 1062 1994 PaeTec Communications, Inc.
6983 1011 1141 ITC^Deltacom
10620 994 2674 TVCABLE BOGOTA

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

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

1:834 2:711 3:3 4:19 5:800 6:15
8:558 12:1923 13:3 14:850 15:11 16:3
17:10 20:17 23:280 24:1769 27:1489 31:1253
32:43 33:1 34:5 36:47 37:1866 38:879
39:2 40:170 41:2765 42:202 44:8 46:1909
47:2 49:1318 50:736 52:12 54:35 55:6
57:26 58:1160 59:575 60:317 61:1414 62:1123
63:2027 64:4289 65:2155 66:4176 67:2073 68:1075
69:3271 70:857 71:489 72:1912 74:2463 75:322
76:300 77:1125 78:1013 79:608 80:1267 81:1001
82:625 83:583 84:543 85:1163 86:436 87:992
88:541 89:1745 90:147 91:5518 92:606 93:1720
94:1877 95:1632 96:515 97:346 98:1010 99:42
100:30 101:330 103:2839 105:517 106:142 107:207
108:511 109:1837 110:905 111:1060 112:546 113:814
114:713 115:960 116:957 117:802 118:1102 119:1321
120:388 121:733 122:1793 123:1218 124:1376 125:1375
128:647 129:223 130:310 131:662 132:357 133:155
134:268 135:67 136:223 137:242 138:348 139:192
140:211 141:330 142:513 143:380 144:498 145:94
146:502 147:380 148:667 149:348 150:156 151:533
152:420 153:189 154:23 155:409 156:270 157:397
158:279 159:726 160:345 161:450 162:448 163:222
164:603 165:498 166:243 167:596 168:1040 169:130
170:1042 171:181 172:21 173:1579 174:539 175:468
176:986 177:2080 178:1855 179:44 180:1457 181:466
182:1229 183:388 184:662 185:554 186:2267 187:1283
188:2147 189:1286 190:6828 192:6738 193:5674 194:4605
195:3438 196:1346 197:945 198:4491 199:5334 200:5993
201:2229 202:8822 203:8894 204:4502 205:2564 206:2797
207:2847 208:4051 209:3681 210:2943 211:1516 212:2180
213:1968 214:924 215:99 216:5309 217:1614 218:620
219:333 220:1282 221:557 222:325 223:454

End of report
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