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, May 28, 2013

[bgp-stats] Routing Table Report - Japan view

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

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

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

BGP routing table entries examined: 455985
Prefixes after maximum aggregation: 185600
Deaggregation factor: 2.46
Unique aggregates announced to Internet: 224636
Total ASes present in the Internet Routing Table: 44182
Prefixes per ASN: 10.32
Origin-only ASes present in the Internet Routing Table: 34655
Origin ASes announcing only one prefix: 16125
Transit ASes present in the Internet Routing Table: 5858
Transit-only ASes present in the Internet Routing Table: 151
Average AS path length visible in the Internet Routing Table: 4.6
Max AS path length visible: 54
Max AS path prepend of ASN ( 56484) 51
Prefixes from unregistered ASNs in the Routing Table: 314
Unregistered ASNs in the Routing Table: 128
Number of 32-bit ASNs allocated by the RIRs: 4777
Number of 32-bit ASNs visible in the Routing Table: 3669
Prefixes from 32-bit ASNs in the Routing Table: 10462
Special use prefixes present in the Routing Table: 24
Prefixes being announced from unallocated address space: 237
Number of addresses announced to Internet: 2619598252
Equivalent to 156 /8s, 35 /16s and 229 /24s
Percentage of available address space announced: 70.8
Percentage of allocated address space announced: 70.8
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 94.5
Total number of prefixes smaller than registry allocations: 160052

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

Prefixes being announced by APNIC Region ASes: 110300
Total APNIC prefixes after maximum aggregation: 33520
APNIC Deaggregation factor: 3.29
Prefixes being announced from the APNIC address blocks: 111708
Unique aggregates announced from the APNIC address blocks: 44954
APNIC Region origin ASes present in the Internet Routing Table: 4851
APNIC Prefixes per ASN: 23.03
APNIC Region origin ASes announcing only one prefix: 1220
APNIC Region transit ASes present in the Internet Routing Table: 829
Average APNIC Region AS path length visible: 4.7
Max APNIC Region AS path length visible: 30
Number of APNIC region 32-bit ASNs visible in the Routing Table: 541
Number of APNIC addresses announced to Internet: 722546400
Equivalent to 43 /8s, 17 /16s and 46 /24s
Percentage of available APNIC address space announced: 84.4

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: 159709
Total ARIN prefixes after maximum aggregation: 80389
ARIN Deaggregation factor: 1.99
Prefixes being announced from the ARIN address blocks: 160286
Unique aggregates announced from the ARIN address blocks: 73336
ARIN Region origin ASes present in the Internet Routing Table: 15711
ARIN Prefixes per ASN: 10.20
ARIN Region origin ASes announcing only one prefix: 5983
ARIN Region transit ASes present in the Internet Routing Table: 1633
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: 1063523904
Equivalent to 63 /8s, 100 /16s and 22 /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, 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: 116932
Total RIPE prefixes after maximum aggregation: 59837
RIPE Deaggregation factor: 1.95
Prefixes being announced from the RIPE address blocks: 120504
Unique aggregates announced from the RIPE address blocks: 77868
RIPE Region origin ASes present in the Internet Routing Table: 17199
RIPE Prefixes per ASN: 7.01
RIPE Region origin ASes announcing only one prefix: 8154
RIPE Region transit ASes present in the Internet Routing Table: 2819
Average RIPE Region AS path length visible: 5.1
Max RIPE Region AS path length visible: 54
Number of RIPE region 32-bit ASNs visible in the Routing Table: 2344
Number of RIPE addresses announced to Internet: 656591972
Equivalent to 39 /8s, 34 /16s and 204 /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: 47636
Total LACNIC prefixes after maximum aggregation: 9306
LACNIC Deaggregation factor: 5.12
Prefixes being announced from the LACNIC address blocks: 51813
Unique aggregates announced from the LACNIC address blocks: 24359
LACNIC Region origin ASes present in the Internet Routing Table: 1941
LACNIC Prefixes per ASN: 26.69
LACNIC Region origin ASes announcing only one prefix: 577
LACNIC Region transit ASes present in the Internet Routing Table: 356
Average LACNIC Region AS path length visible: 4.8
Max LACNIC Region AS path length visible: 28
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 759
Number of LACNIC addresses announced to Internet: 130216232
Equivalent to 7 /8s, 194 /16s and 241 /24s
Percentage of available LACNIC address space announced: 77.6

LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
61440-62463, 262144-263167 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: 2507
AfriNIC Deaggregation factor: 4.33
Prefixes being announced from the AfriNIC address blocks: 11437
Unique aggregates announced from the AfriNIC address blocks: 3899
AfriNIC Region origin ASes present in the Internet Routing Table: 632
AfriNIC Prefixes per ASN: 18.10
AfriNIC Region origin ASes announcing only one prefix: 191
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: 18
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 6
Number of AfriNIC addresses announced to Internet: 46430464
Equivalent to 2 /8s, 196 /16s and 121 /24s
Percentage of available AfriNIC address space announced: 46.1

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 2959 11559 926 Korea Telecom (KIX)
17974 2517 839 86 PT TELEKOMUNIKASI INDONESIA
7545 1984 320 108 TPG Internet Pty Ltd
4755 1734 391 192 TATA Communications formerly
9829 1503 1205 40 BSNL National Internet Backbo
9583 1219 91 502 Sify Limited
7552 1152 1080 13 Vietel Corporation
4808 1134 2113 330 CNCGROUP IP network: China169
9498 1114 309 71 BHARTI Airtel Ltd.
24560 1074 393 162 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 3018 3693 79 bellsouth.net, inc.
7029 2071 1265 211 Windstream Communications Inc
18566 2066 382 184 Covad Communications
1785 1992 677 124 PaeTec Communications, Inc.
22773 1979 2929 125 Cox Communications, Inc.
20115 1670 1609 613 Charter Communications
4323 1609 1138 399 Time Warner Telecom
30036 1328 296 642 Mediacom Communications Corp
7018 1303 11058 837 AT&T WorldNet Services
11492 1232 220 343 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 1804 544 16 Corbina telecom
2118 1260 97 13 EUnet/RELCOM Autonomous Syste
34984 1209 240 228 BILISIM TELEKOM
20940 864 301 681 Akamai Technologies European
13188 827 98 73 Educational Network
31148 809 40 24 FreeNet ISP
6830 771 2377 444 UPC Distribution Services
8551 770 370 43 Bezeq International
34744 682 173 58 SC GVM SISTEM 2003 SRL
58113 666 74 386 LIR DATACENTER TELECOM 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 2768 1527 112 NET Servicos de Comunicao S.A
10620 2634 413 232 TVCABLE BOGOTA
7303 1727 1154 223 Telecom Argentina Stet-France
8151 1265 2709 403 UniNet S.A. de C.V.
18881 952 780 19 Global Village Telecom
6503 933 435 68 AVANTEL, S.A.
27947 840 89 103 Telconet S.A
3816 706 306 85 Empresa Nacional de Telecomun
7738 698 1370 35 Telecomunicacoes da Bahia S.A
11172 608 87 64 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 1237 80 4 MOBITEL
24863 893 274 33 LINKdotNET AS number
6713 542 617 25 Itissalat Al-MAGHRIB
8452 440 956 9 TEDATA
24835 344 80 8 RAYA Telecom - Egypt
3741 261 906 220 The Internet Solution
15706 222 32 6 Sudatel Internet Exchange Aut
12258 193 28 67 Vodacom Internet Company
29975 191 667 21 Vodacom
36992 189 527 22 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 3018 3693 79 bellsouth.net, inc.
4766 2959 11559 926 Korea Telecom (KIX)
28573 2768 1527 112 NET Servicos de Comunicao S.A
10620 2634 413 232 TVCABLE BOGOTA
17974 2517 839 86 PT TELEKOMUNIKASI INDONESIA
7029 2071 1265 211 Windstream Communications Inc
18566 2066 382 184 Covad Communications
1785 1992 677 124 PaeTec Communications, Inc.
7545 1984 320 108 TPG Internet Pty Ltd
22773 1979 2929 125 Cox Communications, Inc.

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 2768 2656 NET Servicos de Comunicao S.A
17974 2517 2431 PT TELEKOMUNIKASI INDONESIA
10620 2634 2402 TVCABLE BOGOTA
4766 2959 2033 Korea Telecom (KIX)
18566 2066 1882 Covad Communications
7545 1984 1876 TPG Internet Pty Ltd
1785 1992 1868 PaeTec Communications, Inc.
7029 2071 1860 Windstream Communications Inc
22773 1979 1854 Cox Communications, Inc.
8402 1804 1788 Corbina telecom

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
128.0.57.0/24 60993 Totalsoft SA
128.0.58.0/23 9050 RTD-ROMTELECOM Autonomous Sys
128.0.60.0/24 9050 RTD-ROMTELECOM Autonomous Sys
128.0.61.0/24 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 /11:88 /12:249
/13:483 /14:899 /15:1593 /16:12682 /17:6657 /18:11166
/19:22227 /20:32163 /21:34357 /22:47672 /23:42407 /24:239307
/25:1311 /26:1667 /27:852 /28:46 /29:65 /30:18
/31:0 /32:19

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

ASN No of nets Total ann. Description
18566 2017 2066 Covad Communications
6389 1733 3018 bellsouth.net, inc.
7029 1580 2071 Windstream Communications Inc
8402 1496 1804 Corbina telecom
22773 1287 1979 Cox Communications, Inc.
36998 1231 1237 MOBITEL
30036 1198 1328 Mediacom Communications Corp
11492 1193 1232 Cable One
1785 1063 1992 PaeTec Communications, Inc.
6983 1008 1135 ITC^Deltacom

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

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

1:806 2:809 3:3 4:15 5:760 6:9
8:553 12:1925 13:3 14:831 15:11 16:3
17:9 20:17 23:274 24:1766 27:1487 31:1300
32:57 33:2 34:5 36:28 37:1865 38:878
39:2 40:172 41:2781 42:192 44:6 46:1924
47:2 49:629 50:710 52:12 54:33 55:7
57:26 58:1198 59:567 60:313 61:1406 62:1107
63:2034 64:4348 65:2179 66:4378 67:2067 68:1129
69:3307 70:878 71:527 72:1921 74:2568 75:408
76:305 77:1107 78:1043 79:589 80:1262 81:1000
82:627 83:570 84:532 85:1158 86:456 87:984
88:539 89:1725 90:147 91:5491 92:591 93:1700
94:1835 95:1502 96:515 97:342 98:1039 99:41
100:30 101:331 103:2650 105:519 106:127 107:209
108:518 109:1823 110:896 111:1034 112:534 113:803
114:720 115:1031 116:932 117:799 118:1078 119:1311
120:439 121:732 122:1806 123:1232 124:1350 125:1375
128:641 129:221 130:325 131:652 132:344 133:148
134:266 135:66 136:221 137:263 138:345 139:196
140:208 141:326 142:541 143:369 144:484 145:93
146:508 147:394 148:682 149:375 150:158 151:570
152:416 153:197 154:43 155:395 156:264 157:396
158:279 159:728 160:338 161:430 162:435 163:220
164:594 165:499 166:283 167:591 168:1036 169:129
170:1028 171:180 172:22 173:1663 174:612 175:483
176:1107 177:1962 178:1854 179:14 180:1465 181:423
182:1197 183:388 184:675 185:465 186:2245 187:1289
188:2141 189:1319 190:6356 192:6646 193:5866 194:4593
195:3421 196:1362 197:906 198:4443 199:5305 200:5926
201:2256 202:8912 203:8912 204:4501 205:2562 206:2842
207:2920 208:4040 209:3665 210:2995 211:1514 212:2190
213:1930 214:902 215:98 216:5249 217:1596 218:620
219:330 220:1261 221:558 222:318 223:485

End of report
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