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.

Thursday, August 9, 2012

[bgp-stats] Routing Table Report - Japan view

* BGP Routing Table Analysis Reports *
Routing Table Report 04:00 +10GMT Fri 10 Aug, 2012

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

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

BGP routing table entries examined: 422314
Prefixes after maximum aggregation: 177139
Deaggregation factor: 2.38
Unique aggregates announced to Internet: 205273
Total ASes present in the Internet Routing Table: 41743
Prefixes per ASN: 10.12
Origin-only ASes present in the Internet Routing Table: 33420
Origin ASes announcing only one prefix: 15688
Transit ASes present in the Internet Routing Table: 5605
Transit-only ASes present in the Internet Routing Table: 136
Average AS path length visible in the Internet Routing Table: 4.6
Max AS path length visible: 32
Max AS path prepend of ASN ( 48687) 24
Prefixes from unregistered ASNs in the Routing Table: 397
Unregistered ASNs in the Routing Table: 153
Number of 32-bit ASNs allocated by the RIRs: 3090
Number of 32-bit ASNs visible in the Routing Table: 2718
Prefixes from 32-bit ASNs in the Routing Table: 7018
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 174
Number of addresses announced to Internet: 2584005260
Equivalent to 154 /8s, 4 /16s and 202 /24s
Percentage of available address space announced: 69.7
Percentage of allocated address space announced: 69.8
Percentage of available address space allocated: 99.9
Percentage of address space in use by end-sites: 93.1
Total number of prefixes smaller than registry allocations: 148402

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

Prefixes being announced by APNIC Region ASes: 101956
Total APNIC prefixes after maximum aggregation: 32767
APNIC Deaggregation factor: 3.11
Prefixes being announced from the APNIC address blocks: 102500
Unique aggregates announced from the APNIC address blocks: 42189
APNIC Region origin ASes present in the Internet Routing Table: 4730
APNIC Prefixes per ASN: 21.67
APNIC Region origin ASes announcing only one prefix: 1239
APNIC Region transit ASes present in the Internet Routing Table: 757
Average APNIC Region AS path length visible: 4.6
Max APNIC Region AS path length visible: 26
Number of APNIC region 32-bit ASNs visible in the Routing Table: 275
Number of APNIC addresses announced to Internet: 706903936
Equivalent to 42 /8s, 34 /16s and 127 /24s
Percentage of available APNIC address space announced: 82.6

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: 153495
Total ARIN prefixes after maximum aggregation: 77843
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 154507
Unique aggregates announced from the ARIN address blocks: 68780
ARIN Region origin ASes present in the Internet Routing Table: 15216
ARIN Prefixes per ASN: 10.15
ARIN Region origin ASes announcing only one prefix: 5762
ARIN Region transit ASes present in the Internet Routing Table: 1608
Average ARIN Region AS path length visible: 4.1
Max ARIN Region AS path length visible: 24
Number of ARIN region 32-bit ASNs visible in the Routing Table: 17
Number of ARIN addresses announced to Internet: 1083653504
Equivalent to 64 /8s, 151 /16s and 61 /24s
Percentage of available ARIN address space announced: 57.3

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: 106990
Total RIPE prefixes after maximum aggregation: 55910
RIPE Deaggregation factor: 1.91
Prefixes being announced from the RIPE address blocks: 109193
Unique aggregates announced from the RIPE address blocks: 68769
RIPE Region origin ASes present in the Internet Routing Table: 16733
RIPE Prefixes per ASN: 6.53
RIPE Region origin ASes announcing only one prefix: 8094
RIPE Region transit ASes present in the Internet Routing Table: 2714
Average RIPE Region AS path length visible: 5.1
Max RIPE Region AS path length visible: 32
Number of RIPE region 32-bit ASNs visible in the Routing Table: 1774
Number of RIPE addresses announced to Internet: 638609380
Equivalent to 38 /8s, 16 /16s and 103 /24s
Percentage of available RIPE address space announced: 92.8

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: 43060
Total LACNIC prefixes after maximum aggregation: 8369
LACNIC Deaggregation factor: 5.15
Prefixes being announced from the LACNIC address blocks: 45846
Unique aggregates announced from the LACNIC address blocks: 21955
LACNIC Region origin ASes present in the Internet Routing Table: 1619
LACNIC Prefixes per ASN: 28.32
LACNIC Region origin ASes announcing only one prefix: 419
LACNIC Region transit ASes present in the Internet Routing Table: 316
Average LACNIC Region AS path length visible: 4.7
Max LACNIC Region AS path length visible: 25
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 646
Number of LACNIC addresses announced to Internet: 112948136
Equivalent to 6 /8s, 187 /16s and 115 /24s
Percentage of available LACNIC address space announced: 67.3

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,
191/8, 200/8, 201/8,

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

Prefixes being announced by AfriNIC Region ASes: 9653
Total AfriNIC prefixes after maximum aggregation: 2196
AfriNIC Deaggregation factor: 4.40
Prefixes being announced from the AfriNIC address blocks: 10094
Unique aggregates announced from the AfriNIC address blocks: 3434
AfriNIC Region origin ASes present in the Internet Routing Table: 558
AfriNIC Prefixes per ASN: 18.09
AfriNIC Region origin ASes announcing only one prefix: 174
AfriNIC Region transit ASes present in the Internet Routing Table: 123
Average AfriNIC Region AS path length visible: 4.6
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: 41523456
Equivalent to 2 /8s, 121 /16s and 153 /24s
Percentage of available AfriNIC address space announced: 41.2

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 2761 11117 1249 Korea Telecom (KIX)
17974 2322 702 54 PT TELEKOMUNIKASI INDONESIA
7545 1713 301 87 TPG Internet Pty Ltd
4755 1606 386 158 TATA Communications formerly
9829 1309 1084 31 BSNL National Internet Backbo
9583 1205 90 533 Sify Limited
7552 1128 1062 11 Vietel Corporation
4808 1120 2050 320 CNCGROUP IP network: China169
24560 1039 385 165 Bharti Airtel Ltd., Telemedia
9498 996 294 74 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
7029 3437 986 155 Windstream Communications Inc
6389 3341 3773 192 bellsouth.net, inc.
18566 2088 382 181 Covad Communications
1785 1932 680 128 PaeTec Communications, Inc.
22773 1699 2914 125 Cox Communications, Inc.
20115 1646 1572 611 Charter Communications
4323 1577 1027 386 Time Warner Telecom
30036 1433 279 784 Mediacom Communications Corp
7018 1247 10041 815 AT&T WorldNet Services
11492 1191 216 351 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 1496 544 16 Corbina telecom
2118 1433 97 14 EUnet/RELCOM Autonomous Syste
15557 1215 2247 55 LDCOM NETWORKS
12479 823 761 88 Uni2 Autonomous System
34984 741 189 177 BILISIM TELEKOM
20940 715 232 556 Akamai Technologies European
6830 714 2310 445 UPC Distribution Services
31148 699 37 9 FreeNet ISP
13188 659 100 9 Educational Network
58113 627 70 373 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
10620 2075 353 219 TVCABLE BOGOTA
28573 2040 1232 55 NET Servicos de Comunicao S.A
6503 1528 419 67 AVANTEL, S.A.
7303 1464 936 200 Telecom Argentina Stet-France
8151 1464 3044 347 UniNet S.A. de C.V.
6458 883 81 15 GUATEL
27947 711 74 95 Telconet S.A
11172 644 91 74 Servicios Alestra S.A de C.V
3816 598 253 95 Empresa Nacional de Telecomun
22047 580 326 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 893 958 13 TEDATA
24863 865 274 33 LINKdotNET AS number
36998 532 48 3 MOBITEL
6713 515 650 19 Itissalat Al-MAGHRIB
24835 286 80 8 RAYA Telecom - Egypt
3741 263 905 224 The Internet Solution
33776 213 12 19 Starcomms Nigeria Limited
12258 195 28 62 Vodacom Internet Company
29975 191 667 21 Vodacom
15706 179 32 6 Sudatel Internet Exchange Aut

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
7029 3437 986 155 Windstream Communications Inc
6389 3341 3773 192 bellsouth.net, inc.
4766 2761 11117 1249 Korea Telecom (KIX)
17974 2322 702 54 PT TELEKOMUNIKASI INDONESIA
18566 2088 382 181 Covad Communications
10620 2075 353 219 TVCABLE BOGOTA
28573 2040 1232 55 NET Servicos de Comunicao S.A
1785 1932 680 128 PaeTec Communications, Inc.
7545 1713 301 87 TPG Internet Pty Ltd
22773 1699 2914 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
6389 3341 3149 bellsouth.net, inc.
17974 2322 2268 PT TELEKOMUNIKASI INDONESIA
28573 2040 1985 NET Servicos de Comunicao S.A
18566 2088 1907 Covad Communications
10620 2075 1856 TVCABLE BOGOTA
1785 1932 1804 PaeTec Communications, Inc.
7545 1713 1626 TPG Internet Pty Ltd
22773 1699 1574 Cox Communications, Inc.
4766 2761 1512 Korea Telecom (KIX)
8402 1496 1480 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
59414 UNALLOCATED 5.102.144.0/21 15576 Nextra backbone in D
59395 UNALLOCATED 5.133.16.0/21 12658 Dexterity Networks L
59407 UNALLOCATED 5.134.16.0/21 51167 Giga-Hosting GmbH
59457 UNALLOCATED 5.149.64.0/24 35567 DASTO semtel d.o.o.
59457 UNALLOCATED 5.149.65.0/24 35567 DASTO semtel d.o.o.
59457 UNALLOCATED 5.149.66.0/24 35567 DASTO semtel d.o.o.
59457 UNALLOCATED 5.149.67.0/24 35567 DASTO semtel d.o.o.
59457 UNALLOCATED 5.149.71.0/24 35567 DASTO semtel d.o.o.
59457 UNALLOCATED 5.149.74.0/23 35567 DASTO semtel d.o.o.
59457 UNALLOCATED 5.149.94.0/24 35567 DASTO semtel d.o.o.

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

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

Network Origin AS Description
5.186.0.0/19 23456 32-bit ASN transition
5.186.32.0/19 23456 32-bit ASN transition
5.186.64.0/19 23456 32-bit ASN transition
5.186.96.0/19 23456 32-bit ASN transition
5.186.128.0/19 23456 32-bit ASN transition
5.186.160.0/19 23456 32-bit ASN transition
5.186.192.0/19 23456 32-bit ASN transition
5.186.224.0/19 23456 32-bit ASN transition
14.192.0.0/22 45464 Room 201, TGU Bldg
14.192.4.0/22 45464 Room 201, TGU Bldg

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 /9:14 /10:29 /11:84 /12:237
/13:474 /14:849 /15:1526 /16:12349 /17:6388 /18:10767
/19:20937 /20:29962 /21:31914 /22:41795 /23:39727 /24:221339
/25:1277 /26:1500 /27:858 /28:167 /29:61 /30:17
/31:0 /32:24

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

ASN No of nets Total ann. Description
7029 2800 3437 Windstream Communications Inc
18566 2038 2088 Covad Communications
6389 1834 3341 bellsouth.net, inc.
30036 1369 1433 Mediacom Communications Corp
8402 1248 1496 Corbina telecom
15557 1159 1215 LDCOM NETWORKS
11492 1154 1191 Cable One
22773 1123 1699 Cox Communications, Inc.
6503 1051 1528 AVANTEL, S.A.
1785 1037 1932 PaeTec Communications, Inc.

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

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

1:543 2:740 3:1 4:13 5:336 6:3
8:438 12:2010 13:1 14:635 15:11 16:3
17:6 20:24 23:202 24:1805 27:1331 31:953
32:56 33:2 34:2 36:8 37:722 38:818
39:1 40:134 41:2891 42:156 44:3 46:1556
47:2 49:432 50:582 52:13 54:14 55:5
57:31 58:986 59:515 60:237 61:1287 62:981
63:2022 64:4244 65:2248 66:4534 67:2041 68:1153
69:3206 70:989 71:518 72:1868 74:2609 75:489
76:330 77:954 78:895 79:501 80:1281 81:955
82:641 83:540 84:619 85:1142 86:797 87:935
88:337 89:1804 90:305 91:5082 92:588 93:1466
94:1586 95:1263 96:400 97:317 98:897 99:39
100:22 101:255 103:1365 105:512 106:112 107:193
108:420 109:1911 110:791 111:947 112:434 113:668
114:653 115:850 116:921 117:728 118:946 119:1229
120:361 121:697 122:1653 123:1166 124:1348 125:1265
128:500 129:183 130:268 131:631 132:298 133:22
134:246 135:61 136:215 137:242 138:346 139:185
140:498 141:263 142:450 143:380 144:494 145:78
146:514 147:295 148:771 149:318 150:154 151:186
152:455 153:175 154:19 155:323 156:222 157:381
158:189 159:632 160:348 161:400 162:391 163:187
164:683 165:412 166:572 167:530 168:965 169:125
170:907 171:148 172:5 173:1734 174:633 175:433
176:594 177:1012 178:1678 180:1337 181:119 182:1030
183:205 184:575 186:2086 187:1122 188:1424 189:1592
190:6135 192:6017 193:5666 194:4556 195:3453 196:1240
197:200 198:3701 199:4905 200:6029 201:1979 202:8677
203:8659 204:4385 205:2528 206:2814 207:2801 208:4046
209:3635 210:2776 211:1562 212:2011 213:1775 214:875
215:86 216:5095 217:1563 218:562 219:314 220:1240
221:573 222:336 223:373

End of report
_______________________________________________
bgp-stats mailing list
bgp-stats@lists.apnic.net
http://mailman.apnic.net/mailman/listinfo/bgp-stats

No comments:

Post a Comment