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, August 25, 2012

[bgp-stats] Routing Table Report - Japan view

* BGP Routing Table Analysis Reports *
Routing Table Report 04:00 +10GMT Sun 26 Aug, 2012

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

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

BGP routing table entries examined: 421990
Prefixes after maximum aggregation: 177461
Deaggregation factor: 2.38
Unique aggregates announced to Internet: 206216
Total ASes present in the Internet Routing Table: 41918
Prefixes per ASN: 10.07
Origin-only ASes present in the Internet Routing Table: 33509
Origin ASes announcing only one prefix: 15743
Transit ASes present in the Internet Routing Table: 5614
Transit-only ASes present in the Internet Routing Table: 139
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: 633
Unregistered ASNs in the Routing Table: 222
Number of 32-bit ASNs allocated by the RIRs: 3172
Number of 32-bit ASNs visible in the Routing Table: 2795
Prefixes from 32-bit ASNs in the Routing Table: 7260
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 167
Number of addresses announced to Internet: 2590668032
Equivalent to 154 /8s, 106 /16s and 117 /24s
Percentage of available address space announced: 69.9
Percentage of allocated address space announced: 70.0
Percentage of available address space allocated: 99.9
Percentage of address space in use by end-sites: 93.3
Total number of prefixes smaller than registry allocations: 148563

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

Prefixes being announced by APNIC Region ASes: 101692
Total APNIC prefixes after maximum aggregation: 32823
APNIC Deaggregation factor: 3.10
Prefixes being announced from the APNIC address blocks: 102284
Unique aggregates announced from the APNIC address blocks: 42479
APNIC Region origin ASes present in the Internet Routing Table: 4739
APNIC Prefixes per ASN: 21.58
APNIC Region origin ASes announcing only one prefix: 1240
APNIC Region transit ASes present in the Internet Routing Table: 761
Average APNIC Region AS path length visible: 4.6
Max APNIC Region AS path length visible: 23
Number of APNIC region 32-bit ASNs visible in the Routing Table: 286
Number of APNIC addresses announced to Internet: 707618432
Equivalent to 42 /8s, 45 /16s and 102 /24s
Percentage of available APNIC address space announced: 82.7

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: 153663
Total ARIN prefixes after maximum aggregation: 77830
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 154672
Unique aggregates announced from the ARIN address blocks: 68765
ARIN Region origin ASes present in the Internet Routing Table: 15221
ARIN Prefixes per ASN: 10.16
ARIN Region origin ASes announcing only one prefix: 5756
ARIN Region transit ASes present in the Internet Routing Table: 1603
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: 1085334144
Equivalent to 64 /8s, 176 /16s and 226 /24s
Percentage of available ARIN address space announced: 57.4

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, 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: 106784
Total RIPE prefixes after maximum aggregation: 56184
RIPE Deaggregation factor: 1.90
Prefixes being announced from the RIPE address blocks: 109081
Unique aggregates announced from the RIPE address blocks: 69230
RIPE Region origin ASes present in the Internet Routing Table: 16800
RIPE Prefixes per ASN: 6.49
RIPE Region origin ASes announcing only one prefix: 8144
RIPE Region transit ASes present in the Internet Routing Table: 2718
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: 1819
Number of RIPE addresses announced to Internet: 641159392
Equivalent to 38 /8s, 55 /16s and 80 /24s
Percentage of available RIPE address space announced: 93.2

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: 42827
Total LACNIC prefixes after maximum aggregation: 8376
LACNIC Deaggregation factor: 5.11
Prefixes being announced from the LACNIC address blocks: 45718
Unique aggregates announced from the LACNIC address blocks: 22145
LACNIC Region origin ASes present in the Internet Routing Table: 1633
LACNIC Prefixes per ASN: 28.00
LACNIC Region origin ASes announcing only one prefix: 429
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: 667
Number of LACNIC addresses announced to Internet: 114561056
Equivalent to 6 /8s, 212 /16s and 16 /24s
Percentage of available LACNIC address space announced: 68.3

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: 9614
Total AfriNIC prefixes after maximum aggregation: 2194
AfriNIC Deaggregation factor: 4.38
Prefixes being announced from the AfriNIC address blocks: 10068
Unique aggregates announced from the AfriNIC address blocks: 3466
AfriNIC Region origin ASes present in the Internet Routing Table: 558
AfriNIC Prefixes per ASN: 18.04
AfriNIC Region origin ASes announcing only one prefix: 174
AfriNIC Region transit ASes present in the Internet Routing Table: 124
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: 41679104
Equivalent to 2 /8s, 123 /16s and 249 /24s
Percentage of available AfriNIC address space announced: 41.4

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 2880 11122 1358 Korea Telecom (KIX)
17974 2342 702 54 PT TELEKOMUNIKASI INDONESIA
7545 1723 301 86 TPG Internet Pty Ltd
4755 1610 386 160 TATA Communications formerly
9829 1308 1099 24 BSNL National Internet Backbo
9583 1176 86 509 Sify Limited
4808 1130 2052 323 CNCGROUP IP network: China169
7552 1107 1062 11 Vietel Corporation
24560 1040 386 160 Bharti Airtel Ltd., Telemedia
9498 1000 310 73 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 3446 990 154 Windstream Communications Inc
6389 3359 3755 190 bellsouth.net, inc.
18566 2086 382 179 Covad Communications
1785 1946 681 130 PaeTec Communications, Inc.
22773 1825 2930 128 Cox Communications, Inc.
20115 1648 1575 609 Charter Communications
4323 1574 1026 388 Time Warner Telecom
30036 1446 284 734 Mediacom Communications Corp
7018 1248 10308 816 AT&T WorldNet Services
11492 1197 217 345 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 1540 544 16 Corbina telecom
15557 1218 2247 55 LDCOM NETWORKS
12479 828 764 85 Uni2 Autonomous System
34984 752 189 176 BILISIM TELEKOM
6830 719 2313 446 UPC Distribution Services
31148 712 37 9 FreeNet ISP
20940 707 227 549 Akamai Technologies European
2118 685 97 14 EUnet/RELCOM Autonomous Syste
13188 657 100 9 Educational Network
58113 616 69 362 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 2100 358 219 TVCABLE BOGOTA
28573 2051 1244 55 NET Servicos de Comunicao S.A
7303 1565 1034 200 Telecom Argentina Stet-France
6503 1416 435 68 AVANTEL, S.A.
8151 1354 3033 346 UniNet S.A. de C.V.
6458 884 81 15 GUATEL
27947 700 74 95 Telconet S.A
3816 602 255 90 Empresa Nacional de Telecomun
11172 590 85 70 Servicios Alestra S.A de C.V
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 880 958 13 TEDATA
24863 869 275 36 LINKdotNET AS number
36998 534 48 3 MOBITEL
6713 517 650 19 Itissalat Al-MAGHRIB
24835 286 80 8 RAYA Telecom - Egypt
3741 262 904 223 The Internet Solution
12258 194 28 66 Vodacom Internet Company
33776 194 13 11 Starcomms Nigeria Limited
15706 193 32 6 Sudatel Internet Exchange Aut
29975 191 667 21 Vodacom

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 3446 990 154 Windstream Communications Inc
6389 3359 3755 190 bellsouth.net, inc.
4766 2880 11122 1358 Korea Telecom (KIX)
17974 2342 702 54 PT TELEKOMUNIKASI INDONESIA
10620 2100 358 219 TVCABLE BOGOTA
18566 2086 382 179 Covad Communications
28573 2051 1244 55 NET Servicos de Comunicao S.A
1785 1946 681 130 PaeTec Communications, Inc.
22773 1825 2930 128 Cox Communications, Inc.
7545 1723 301 86 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
6389 3359 3169 bellsouth.net, inc.
17974 2342 2288 PT TELEKOMUNIKASI INDONESIA
28573 2051 1996 NET Servicos de Comunicao S.A
18566 2086 1907 Covad Communications
10620 2100 1881 TVCABLE BOGOTA
1785 1946 1816 PaeTec Communications, Inc.
22773 1825 1697 Cox Communications, Inc.
7545 1723 1637 TPG Internet Pty Ltd
8402 1540 1524 Corbina telecom
4766 2880 1522 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
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
59521 UNALLOCATED 5.134.192.0/21 29518 Labs2
59581 UNALLOCATED 5.149.8.0/21 25577 C4L main AS
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 5.149.68.0/24 35567 DASTO semtel d.o.o.

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

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

Network Origin AS Description
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
41.207.224.0/23 36898 UniNet Communications

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
/13:475 /14:842 /15:1533 /16:12357 /17:6393 /18:10811
/19:20947 /20:30050 /21:31753 /22:41936 /23:39754 /24:221013
/25:1289 /26:1521 /27:888 /28:14 /29:6 /30:5
/31:0 /32:20

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

ASN No of nets Total ann. Description
7029 2808 3446 Windstream Communications Inc
18566 2036 2086 Covad Communications
6389 1856 3359 bellsouth.net, inc.
30036 1378 1446 Mediacom Communications Corp
8402 1266 1540 Corbina telecom
22773 1175 1825 Cox Communications, Inc.
15557 1162 1218 LDCOM NETWORKS
11492 1160 1197 Cable One
1785 1041 1946 PaeTec Communications, Inc.
6503 972 1416 AVANTEL, S.A.

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

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

1:566 2:733 3:1 4:13 5:364 6:3
8:422 12:2003 13:1 14:648 15:11 16:3
17:6 20:27 23:205 24:1804 27:1322 31:1043
32:56 33:2 34:2 36:8 37:741 38:826
39:1 40:133 41:2845 42:156 44:3 46:1583
47:2 49:468 50:593 52:13 54:17 55:7
56:1 57:31 58:989 59:523 60:238 61:1283
62:993 63:1978 64:4269 65:2243 66:4505 67:2027
68:1077 69:3207 70:957 71:525 72:1862 74:2567
75:491 76:330 77:952 78:915 79:488 80:1280
81:954 82:634 83:534 84:626 85:1135 86:786
87:928 88:350 89:1805 90:301 91:5132 92:590
93:1483 94:1587 95:1268 96:398 97:317 98:896
99:39 100:23 101:262 103:1427 105:512 106:116
107:195 108:431 109:1910 110:796 111:955 112:430
113:686 114:655 115:847 116:889 117:729 118:934
119:1247 120:301 121:690 122:1656 123:1171 124:1351
125:1265 128:520 129:185 130:283 131:624 132:299
133:22 134:246 135:61 136:218 137:239 138:338
139:184 140:501 141:274 142:483 143:359 144:485
145:81 146:511 147:256 148:757 149:300 150:156
151:168 152:456 153:177 154:20 155:413 156:224
157:382 158:179 159:632 160:348 161:409 162:404
163:189 164:689 165:411 166:560 167:536 168:953
169:125 170:906 171:145 172:5 173:1714 174:630
175:440 176:604 177:1055 178:1687 180:1347 181:127
182:1037 183:223 184:590 186:2146 187:1078 188:1466
189:1546 190:6177 192:6018 193:5459 194:4229 195:3268
196:1224 197:205 198:3744 199:4937 200:5972 201:1959
202:8716 203:8660 204:4411 205:2519 206:2806 207:2856
208:4044 209:3645 210:2818 211:1550 212:2021 213:1807
214:857 215:85 216:5136 217:1551 218:547 219:337
220:1239 221:530 222:339 223:341

End of report
_______________________________________________
bgp-stats mailing list
bgp-stats@lists.apnic.net
http://mailman.apnic.net/mailman/listinfo/bgp-stats
Posted by Admin at 11:51 AM

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)