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 4, 2012

[bgp-stats] Routing Table Report - Japan view

* BGP Routing Table Analysis Reports *
Routing Table Report 04:00 +10GMT Tue 05 Jun, 2012

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

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

BGP routing table entries examined: 412833
Prefixes after maximum aggregation: 174704
Deaggregation factor: 2.36
Unique aggregates announced to Internet: 200968
Total ASes present in the Internet Routing Table: 41200
Prefixes per ASN: 10.02
Origin-only ASes present in the Internet Routing Table: 33251
Origin ASes announcing only one prefix: 15654
Transit ASes present in the Internet Routing Table: 5507
Transit-only ASes present in the Internet Routing Table: 143
Average AS path length visible in the Internet Routing Table: 4.5
Max AS path length visible: 40
Max AS path prepend of ASN ( 22394) 35
Prefixes from unregistered ASNs in the Routing Table: 397
Unregistered ASNs in the Routing Table: 138
Number of 32-bit ASNs allocated by the RIRs: 2794
Number of 32-bit ASNs visible in the Routing Table: 2442
Prefixes from 32-bit ASNs in the Routing Table: 6201
Special use prefixes present in the Routing Table: 2
Prefixes being announced from unallocated address space: 111
Number of addresses announced to Internet: 2560938796
Equivalent to 152 /8s, 164 /16s and 211 /24s
Percentage of available address space announced: 69.1
Percentage of allocated address space announced: 69.2
Percentage of available address space allocated: 99.9
Percentage of address space in use by end-sites: 92.8
Total number of prefixes smaller than registry allocations: 171522

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

Prefixes being announced by APNIC Region ASes: 100512
Total APNIC prefixes after maximum aggregation: 32482
APNIC Deaggregation factor: 3.09
Prefixes being announced from the APNIC address blocks: 96965
Unique aggregates announced from the APNIC address blocks: 40061
APNIC Region origin ASes present in the Internet Routing Table: 4696
APNIC Prefixes per ASN: 20.65
APNIC Region origin ASes announcing only one prefix: 1244
APNIC Region transit ASes present in the Internet Routing Table: 734
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: 222
Number of APNIC addresses announced to Internet: 648076608
Equivalent to 38 /8s, 160 /16s and 221 /24s
Percentage of available APNIC address space announced: 82.2

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, 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: 151716
Total ARIN prefixes after maximum aggregation: 77049
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 122130
Unique aggregates announced from the ARIN address blocks: 51306
ARIN Region origin ASes present in the Internet Routing Table: 15142
ARIN Prefixes per ASN: 8.07
ARIN Region origin ASes announcing only one prefix: 5744
ARIN Region transit ASes present in the Internet Routing Table: 1602
Average ARIN Region AS path length visible: 4.0
Max ARIN Region AS path length visible: 40
Number of ARIN region 32-bit ASNs visible in the Routing Table: 17
Number of ARIN addresses announced to Internet: 816881344
Equivalent to 48 /8s, 176 /16s and 158 /24s
Percentage of available ARIN address space announced: 65.1

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, 173/8,
174/8, 184/8, 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: 102932
Total RIPE prefixes after maximum aggregation: 54679
RIPE Deaggregation factor: 1.88
Prefixes being announced from the RIPE address blocks: 94906
Unique aggregates announced from the RIPE address blocks: 59517
RIPE Region origin ASes present in the Internet Routing Table: 16601
RIPE Prefixes per ASN: 5.72
RIPE Region origin ASes announcing only one prefix: 8057
RIPE Region transit ASes present in the Internet Routing Table: 2649
Average RIPE Region AS path length visible: 5.0
Max RIPE Region AS path length visible: 28
Number of RIPE region 32-bit ASNs visible in the Routing Table: 1616
Number of RIPE addresses announced to Internet: 515252484
Equivalent to 30 /8s, 182 /16s and 33 /24s
Percentage of available RIPE address space announced: 83.0

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,
176/8, 178/8, 185/8, 193/8, 194/8, 195/8, 212/8,
213/8, 217/8,

LACNIC Region Analysis Summary
------------------------------

Prefixes being announced by LACNIC Region ASes: 41856
Total LACNIC prefixes after maximum aggregation: 8260
LACNIC Deaggregation factor: 5.07
Prefixes being announced from the LACNIC address blocks: 42034
Unique aggregates announced from the LACNIC address blocks: 20612
LACNIC Region origin ASes present in the Internet Routing Table: 1597
LACNIC Prefixes per ASN: 26.32
LACNIC Region origin ASes announcing only one prefix: 439
LACNIC Region transit ASes present in the Internet Routing Table: 307
Average LACNIC Region AS path length visible: 4.4
Max LACNIC Region AS path length visible: 19
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 582
Number of LACNIC addresses announced to Internet: 101781640
Equivalent to 6 /8s, 17 /16s and 16 /24s
Percentage of available LACNIC address space announced: 67.4

LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
262144-263167 plus ERX transfers
LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8,
200/8, 201/8,

AfriNIC Region Analysis Summary
-------------------------------

Prefixes being announced by AfriNIC Region ASes: 9426
Total AfriNIC prefixes after maximum aggregation: 2170
AfriNIC Deaggregation factor: 4.34
Prefixes being announced from the AfriNIC address blocks: 7479
Unique aggregates announced from the AfriNIC address blocks: 2192
AfriNIC Region origin ASes present in the Internet Routing Table: 543
AfriNIC Prefixes per ASN: 13.77
AfriNIC Region origin ASes announcing only one prefix: 170
AfriNIC Region transit ASes present in the Internet Routing Table: 122
Average AfriNIC Region AS path length visible: 4.5
Max AfriNIC Region AS path length visible: 25
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 31888640
Equivalent to 1 /8s, 230 /16s and 149 /24s
Percentage of available AfriNIC address space announced: 47.5

AfriNIC AS Blocks 36864-37887, 327680-328703 & ERX transfers
AfriNIC Address Blocks 41/8, 102/8, 105/8, 197/8,

APNIC Region per AS prefix count summary
----------------------------------------

ASN No of nets /20 equiv MaxAgg Description
4766 2637 11113 1122 Korea Telecom (KIX)
17974 1927 530 81 PT TELEKOMUNIKASI INDONESIA
7545 1670 301 87 TPG Internet Pty Ltd
4755 1578 386 156 TATA Communications formerly
9829 1298 1085 28 BSNL National Internet Backbo
7552 1180 1062 11 Vietel Corporation
9583 1174 87 501 Sify Limited
4808 1108 2050 317 CNCGROUP IP network: China169
24560 1027 385 167 Bharti Airtel Ltd., Telemedia
9498 965 291 63 BHARTI Airtel Ltd.

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 3411 3807 193 bellsouth.net, inc.
7029 3316 986 159 Windstream Communications Inc
18566 2092 382 181 Covad Communications
1785 1912 680 130 PaeTec Communications, Inc.
20115 1645 1569 615 Charter Communications
22773 1638 2911 121 Cox Communications, Inc.
4323 1574 1043 385 Time Warner Telecom
30036 1423 265 753 Mediacom Communications Corp
7018 1223 10031 824 AT&T WorldNet Services
7011 1188 317 681 Citizens Utilities

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 1778 544 16 Corbina telecom
2118 1302 97 14 EUnet/RELCOM Autonomous Syste
34984 704 188 171 BILISIM TELEKOM
12479 697 679 71 Uni2 Autonomous System
31148 684 37 9 FreeNet ISP
20940 666 219 520 Akamai Technologies European
6830 654 2215 425 UPC Distribution Services
8551 579 364 61 Bezeq International
3320 489 8442 402 Deutsche Telekom AG
3292 473 2108 407 TDC Tele Danmark

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
10620 1926 341 204 TVCABLE BOGOTA
28573 1903 1184 48 NET Servicos de Comunicao S.A
6503 1535 418 66 AVANTEL, S.A.
8151 1483 3065 333 UniNet S.A. de C.V.
7303 1435 901 191 Telecom Argentina Stet-France
26615 902 760 32 Tim Brasil S.A.
27947 693 73 94 Telconet S.A
11172 645 107 74 Servicios Alestra S.A de C.V
3816 585 247 89 Empresa Nacional de Telecomun
22047 583 326 15 VTR PUNTO NET S.A.

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
8452 1414 958 13 TEDATA
24863 851 274 35 LINKdotNET AS number
6713 497 649 18 Itissalat Al-MAGHRIB
24835 321 80 8 RAYA Telecom - Egypt
3741 262 905 223 The Internet Solution
33776 210 12 21 Starcomms Nigeria Limited
12258 197 28 62 Vodacom Internet Company
16637 172 666 85 MTN Network Solutions
15706 165 32 6 Sudatel Internet Exchange Aut
29571 157 15 16 Ci Telecom Autonomous system

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 3411 3807 193 bellsouth.net, inc.
7029 3316 986 159 Windstream Communications Inc
4766 2637 11113 1122 Korea Telecom (KIX)
18566 2092 382 181 Covad Communications
17974 1927 530 81 PT TELEKOMUNIKASI INDONESIA
10620 1926 341 204 TVCABLE BOGOTA
1785 1912 680 130 PaeTec Communications, Inc.
28573 1903 1184 48 NET Servicos de Comunicao S.A
8402 1778 544 16 Corbina telecom
7545 1670 301 87 TPG Internet Pty Ltd

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

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

ASN No of nets Net Savings Description
7029 3316 3157 Windstream Communications Inc
18566 2092 1911 Covad Communications
28573 1903 1855 NET Servicos de Comunicao S.A
17974 1927 1846 PT TELEKOMUNIKASI INDONESIA
1785 1912 1782 PaeTec Communications, Inc.
8402 1778 1762 Corbina telecom
10620 1926 1722 TVCABLE BOGOTA
7545 1670 1583 TPG Internet Pty Ltd
22773 1638 1517 Cox Communications, Inc.
4766 2637 1515 Korea Telecom (KIX)

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
25639 UNALLOCATED 12.41.169.0/24 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 7018 AT&T WorldNet Servic
17300 UNALLOCATED 12.45.110.0/24 701 UUNET Technologies,
16476 UNALLOCATED 12.46.27.0/24 7018 AT&T WorldNet Servic
32873 UNALLOCATED 12.46.100.0/23 10912 InterNAP Network Ser
32873 UNALLOCATED 12.46.102.0/24 10912 InterNAP Network Ser
14764 UNALLOCATED 12.108.237.0/24 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
128.0.0.0/21 12654 RIPE NCC RIS Project
128.0.24.0/24 12654 RIPE NCC RIS Project

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

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

Network Origin AS Description
14.192.0.0/22 45464 Room 201, TGU Bldg
14.192.4.0/22 45464 Room 201, TGU Bldg
14.192.8.0/22 45464 Room 201, TGU Bldg
14.192.12.0/22 45464 Room 201, TGU Bldg
14.192.16.0/22 45464 Room 201, TGU Bldg
14.192.20.0/22 45464 Room 201, TGU Bldg
14.192.24.0/22 45464 Room 201, TGU Bldg
14.192.28.0/22 45464 Room 201, TGU Bldg
27.112.114.0/24 23884 Proimage Engineering and Comm
41.222.79.0/24 36938 >>UNKNOWN<<

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 /8:19 /9:13 /10:29 /11:82 /12:236
/13:461 /14:833 /15:1504 /16:12274 /17:6303 /18:10634
/19:20801 /20:29477 /21:30976 /22:40779 /23:38521 /24:216103
/25:1234 /26:1453 /27:826 /28:170 /29:67 /30:16
/31:0 /32:22

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

ASN No of nets Total ann. Description
7029 2977 3316 Windstream Communications Inc
6389 2130 3411 bellsouth.net, inc.
18566 2041 2092 Covad Communications
8402 1756 1778 Corbina telecom
30036 1363 1423 Mediacom Communications Corp
6503 1223 1535 AVANTEL, S.A.
8452 1215 1414 TEDATA
11492 1151 1188 Cable One
22773 1083 1638 Cox Communications, Inc.
7011 1073 1188 Citizens Utilities

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

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

1:554 2:756 3:1 4:13 5:40 6:3
8:422 12:2012 13:1 14:613 15:12 16:3
17:5 20:23 23:173 24:1778 27:1281 31:986
32:56 33:2 34:2 36:9 37:647 38:811
40:125 41:3274 42:135 44:3 46:1432 47:3
49:432 50:555 52:13 54:12 55:12 56:3
57:33 58:958 59:498 60:258 61:1209 62:1016
63:2008 64:4248 65:2251 66:4468 67:2035 68:1156
69:3182 70:933 71:491 72:1820 74:2603 75:493
76:327 77:953 78:977 79:488 80:1220 81:939
82:661 83:544 84:494 85:1193 86:434 87:908
88:345 89:1728 90:293 91:4889 92:541 93:1396
94:1578 95:1186 96:363 97:313 98:886 99:38
100:7 101:259 103:1128 106:95 107:186 108:316
109:1362 110:768 111:928 112:416 113:614 114:629
115:841 116:950 117:721 118:908 119:1240 120:355
121:698 122:1664 123:1096 124:1389 125:1260 128:553
129:196 130:248 131:632 132:289 133:22 134:245
135:61 136:215 137:240 138:358 139:186 140:494
141:252 142:415 143:423 144:540 145:72 146:511
147:286 148:776 149:308 150:193 151:176 152:469
153:172 154:13 155:407 156:221 157:381 158:184
159:575 160:342 161:264 162:345 163:191 164:615
165:407 166:592 167:470 168:863 169:126 170:872
171:136 172:2 173:1763 174:611 175:432 176:548
177:811 178:1399 180:1229 181:88 182:1042 183:223
184:526 185:1 186:2310 187:1116 188:1318 189:1824
190:5561 192:6005 193:5567 194:4526 195:3408 196:1213
197:147 198:3663 199:4736 200:5893 201:1940 202:8603
203:8569 204:4338 205:2531 206:2774 207:2799 208:4060
209:3618 210:2761 211:1549 212:2043 213:1933 214:870
215:98 216:5086 217:1541 218:551 219:313 220:1240
221:568 222:315 223:319

End of report
_______________________________________________
bgp-stats mailing list
bgp-stats@lists.apnic.net
http://mailman.apnic.net/mailman/listinfo/bgp-stats
Posted by Admin at 12:03 PM

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)