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, July 7, 2013

[bgp-stats] Routing Table Report - Japan view

* BGP Routing Table Analysis Reports *
Routing Table Report 04:00 +10GMT Mon 08 Jul, 2013

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

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

BGP routing table entries examined: 457852
Prefixes after maximum aggregation: 186308
Deaggregation factor: 2.46
Unique aggregates announced to Internet: 227366
Total ASes present in the Internet Routing Table: 44432
Prefixes per ASN: 10.30
Origin-only ASes present in the Internet Routing Table: 34787
Origin ASes announcing only one prefix: 16157
Transit ASes present in the Internet Routing Table: 5883
Transit-only ASes present in the Internet Routing Table: 149
Average AS path length visible in the Internet Routing Table: 4.7
Max AS path length visible: 29
Max AS path prepend of ASN ( 36992) 22
Prefixes from unregistered ASNs in the Routing Table: 2186
Unregistered ASNs in the Routing Table: 1001
Number of 32-bit ASNs allocated by the RIRs: 4853
Number of 32-bit ASNs visible in the Routing Table: 3762
Prefixes from 32-bit ASNs in the Routing Table: 11167
Special use prefixes present in the Routing Table: 26
Prefixes being announced from unallocated address space: 230
Number of addresses announced to Internet: 2626469132
Equivalent to 156 /8s, 140 /16s and 189 /24s
Percentage of available address space announced: 70.9
Percentage of allocated address space announced: 70.9
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: 160367

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

Prefixes being announced by APNIC Region ASes: 109695
Total APNIC prefixes after maximum aggregation: 33709
APNIC Deaggregation factor: 3.25
Prefixes being announced from the APNIC address blocks: 111588
Unique aggregates announced from the APNIC address blocks: 45913
APNIC Region origin ASes present in the Internet Routing Table: 4854
APNIC Prefixes per ASN: 22.99
APNIC Region origin ASes announcing only one prefix: 1212
APNIC Region transit ASes present in the Internet Routing Table: 822
Average APNIC Region AS path length visible: 4.8
Max APNIC Region AS path length visible: 23
Number of APNIC region 32-bit ASNs visible in the Routing Table: 597
Number of APNIC addresses announced to Internet: 724440032
Equivalent to 43 /8s, 46 /16s and 19 /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: 158974
Total ARIN prefixes after maximum aggregation: 80418
ARIN Deaggregation factor: 1.98
Prefixes being announced from the ARIN address blocks: 159602
Unique aggregates announced from the ARIN address blocks: 73842
ARIN Region origin ASes present in the Internet Routing Table: 15745
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: 1642
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: 1065544256
Equivalent to 63 /8s, 130 /16s and 234 /24s
Percentage of available ARIN address space announced: 56.4

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: 117965
Total RIPE prefixes after maximum aggregation: 60283
RIPE Deaggregation factor: 1.96
Prefixes being announced from the RIPE address blocks: 121419
Unique aggregates announced from the RIPE address blocks: 78536
RIPE Region origin ASes present in the Internet Routing Table: 17278
RIPE Prefixes per ASN: 7.03
RIPE Region origin ASes announcing only one prefix: 8190
RIPE Region transit ASes present in the Internet Routing Table: 2831
Average RIPE Region AS path length visible: 5.2
Max RIPE Region AS path length visible: 29
Number of RIPE region 32-bit ASNs visible in the Routing Table: 2372
Number of RIPE addresses announced to Internet: 656724324
Equivalent to 39 /8s, 36 /16s and 209 /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: 48917
Total LACNIC prefixes after maximum aggregation: 9347
LACNIC Deaggregation factor: 5.23
Prefixes being announced from the LACNIC address blocks: 53372
Unique aggregates announced from the LACNIC address blocks: 24895
LACNIC Region origin ASes present in the Internet Routing Table: 1972
LACNIC Prefixes per ASN: 27.06
LACNIC Region origin ASes announcing only one prefix: 580
LACNIC Region transit ASes present in the Internet Routing Table: 363
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: 768
Number of LACNIC addresses announced to Internet: 133192840
Equivalent to 7 /8s, 240 /16s and 92 /24s
Percentage of available LACNIC address space announced: 79.4

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: 11044
Total AfriNIC prefixes after maximum aggregation: 2510
AfriNIC Deaggregation factor: 4.40
Prefixes being announced from the AfriNIC address blocks: 11641
Unique aggregates announced from the AfriNIC address blocks: 3968
AfriNIC Region origin ASes present in the Internet Routing Table: 644
AfriNIC Prefixes per ASN: 18.08
AfriNIC Region origin ASes announcing only one prefix: 187
AfriNIC Region transit ASes present in the Internet Routing Table: 133
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: 46237440
Equivalent to 2 /8s, 193 /16s and 135 /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 2937 11561 920 Korea Telecom (KIX)
17974 2567 855 92 PT TELEKOMUNIKASI INDONESIA
7545 2026 320 108 TPG Internet Pty Ltd
4755 1752 391 192 TATA Communications formerly
9829 1519 1209 41 BSNL National Internet Backbo
9583 1462 117 563 Sify Limited
4808 1173 2151 340 CNCGROUP IP network: China169
7552 1159 1080 13 Vietel Corporation
9498 1151 309 71 BHARTI Airtel Ltd.
24560 1082 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 1997 678 126 PaeTec Communications, Inc.
22773 1988 2927 123 Cox Communications, Inc.
20115 1667 1618 620 Charter Communications
4323 1621 1137 403 Time Warner Telecom
701 1531 11125 803 UUNET Technologies, Inc.
30036 1338 300 662 Mediacom Communications Corp
7018 1296 11034 819 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 1624 544 16 Corbina telecom
34984 1280 244 222 BILISIM TELEKOM
2118 1271 97 13 EUnet/RELCOM Autonomous Syste
20940 912 319 716 Akamai Technologies European
13188 824 98 82 Educational Network
31148 808 40 25 FreeNet ISP
6830 782 2375 439 UPC Distribution Services
8551 776 370 45 Bezeq International
12479 673 789 57 Uni2 Autonomous System
34744 656 171 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 2911 1576 107 NET Servicos de Comunicao S.A
10620 2686 421 187 TVCABLE BOGOTA
7303 1732 1155 221 Telecom Argentina Stet-France
8151 1269 2745 386 UniNet S.A. de C.V.
18881 1117 844 20 Global Village Telecom
6503 864 434 63 AVANTEL, S.A.
27947 797 95 95 Telconet S.A
3816 717 306 85 Empresa Nacional de Telecomun
7738 698 1370 35 Telecomunicacoes da Bahia S.A
11172 618 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 1298 80 4 MOBITEL
24863 883 274 30 LINKdotNET AS number
6713 542 617 25 Itissalat Al-MAGHRIB
8452 457 956 9 TEDATA
24835 345 80 8 RAYA Telecom - Egypt
3741 259 922 218 The Internet Solution
15706 222 32 6 Sudatel Internet Exchange Aut
29571 219 17 12 Ci Telecom Autonomous system
36992 204 527 22 Etisalat MISR
12258 194 28 67 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 2990 3691 69 bellsouth.net, inc.
4766 2937 11561 920 Korea Telecom (KIX)
28573 2911 1576 107 NET Servicos de Comunicao S.A
10620 2686 421 187 TVCABLE BOGOTA
17974 2567 855 92 PT TELEKOMUNIKASI INDONESIA
18566 2066 382 184 Covad Communications
7545 2026 320 108 TPG Internet Pty Ltd
1785 1997 678 126 PaeTec Communications, Inc.
22773 1988 2927 123 Cox Communications, Inc.
4755 1752 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 2911 2804 NET Servicos de Comunicao S.A
10620 2686 2499 TVCABLE BOGOTA
17974 2567 2475 PT TELEKOMUNIKASI INDONESIA
4766 2937 2017 Korea Telecom (KIX)
7545 2026 1918 TPG Internet Pty Ltd
18566 2066 1882 Covad Communications
1785 1997 1871 PaeTec Communications, Inc.
22773 1988 1865 Cox Communications, Inc.
8402 1624 1608 Corbina telecom
4755 1752 1560 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
59628 UNALLOCATED 5.200.128.0/17 48159 Telecommunication In
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

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
128.0.42.0/24 60619 >>UNKNOWN<<
128.0.43.0/24 60619 >>UNKNOWN<<
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

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

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

Network Origin AS Description
5.200.128.0/17 59628 >>UNKNOWN<<
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.

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 /12:249
/13:482 /14:899 /15:1603 /16:12710 /17:6642 /18:11112
/19:22508 /20:32104 /21:34519 /22:48151 /23:42420 /24:240530
/25:1275 /26:1530 /27:851 /28:36 /29:54 /30:12
/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 1328 1624 Corbina telecom
22773 1293 1988 Cox Communications, Inc.
36998 1266 1298 MOBITEL
30036 1206 1338 Mediacom Communications Corp
11492 1184 1223 Cable One
1785 1065 1997 PaeTec Communications, Inc.
6983 1015 1144 ITC^Deltacom
10620 1000 2686 TVCABLE BOGOTA

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

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

1:846 2:747 3:3 4:19 5:812 6:16
8:562 12:1920 13:3 14:864 15:11 16:3
17:10 20:17 23:295 24:1770 27:1474 31:1247
32:45 33:2 34:5 36:52 37:1865 38:878
39:2 40:171 41:2786 42:225 44:7 46:1914
47:2 49:666 50:751 52:12 54:35 55:4
57:26 58:1144 59:584 60:328 61:1411 62:1126
63:2013 64:4329 65:2159 66:4175 67:2038 68:1076
69:3290 70:833 71:491 72:1930 74:2456 75:324
76:308 77:1124 78:1009 79:616 80:1268 81:1018
82:631 83:595 84:588 85:1179 86:449 87:1012
88:544 89:1750 90:149 91:5536 92:607 93:1776
94:1895 95:1638 96:523 97:343 98:1017 99:42
100:30 101:337 103:2924 105:519 106:138 107:207
108:513 109:1876 110:911 111:1061 112:546 113:816
114:691 115:966 116:951 117:797 118:1110 119:1319
120:387 121:735 122:1798 123:1221 124:1375 125:1383
128:629 129:225 130:310 131:668 132:360 133:155
134:269 135:68 136:223 137:242 138:340 139:190
140:205 141:326 142:540 143:381 144:502 145:97
146:510 147:388 148:656 149:351 150:148 151:520
152:417 153:189 154:24 155:412 156:265 157:397
158:279 159:717 160:344 161:451 162:471 163:222
164:604 165:498 166:245 167:595 168:1026 169:129
170:1052 171:180 172:23 173:1597 174:544 175:470
176:1135 177:2126 178:1858 179:53 180:1458 181:502
182:1257 183:423 184:667 185:616 186:2328 187:1302
188:2069 189:1288 190:6806 192:6808 193:5848 194:4625
195:3465 196:1359 197:937 198:4508 199:5349 200:6005
201:2202 202:8817 203:8881 204:4511 205:2562 206:2810
207:2849 208:4019 209:3601 210:2920 211:1519 212:2185
213:1973 214:904 215:99 216:5259 217:1619 218:622
219:323 220:1281 221:557 222:321 223:448

End of report
_______________________________________________
bgp-stats mailing list
bgp-stats@lists.apnic.net
http://mailman.apnic.net/mailman/listinfo/bgp-stats
Posted by Admin at 11:33 AM

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)