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, December 23, 2012

[bgp-stats] Routing Table Report - Japan view

* BGP Routing Table Analysis Reports *
Routing Table Report 04:00 +10GMT Mon 24 Dec, 2012

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

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

BGP routing table entries examined: 438097
Prefixes after maximum aggregation: 180953
Deaggregation factor: 2.42
Unique aggregates announced to Internet: 215538
Total ASes present in the Internet Routing Table: 42902
Prefixes per ASN: 10.21
Origin-only ASes present in the Internet Routing Table: 33972
Origin ASes announcing only one prefix: 15867
Transit ASes present in the Internet Routing Table: 5696
Transit-only ASes present in the Internet Routing Table: 139
Average AS path length visible in the Internet Routing Table: 4.5
Max AS path length visible: 31
Max AS path prepend of ASN ( 28730) 25
Prefixes from unregistered ASNs in the Routing Table: 1212
Unregistered ASNs in the Routing Table: 439
Number of 32-bit ASNs allocated by the RIRs: 3604
Number of 32-bit ASNs visible in the Routing Table: 3234
Prefixes from 32-bit ASNs in the Routing Table: 8767
Special use prefixes present in the Routing Table: 14
Prefixes being announced from unallocated address space: 172
Number of addresses announced to Internet: 2619426188
Equivalent to 156 /8s, 33 /16s and 69 /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: 94.1
Total number of prefixes smaller than registry allocations: 154766

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

Prefixes being announced by APNIC Region ASes: 105261
Total APNIC prefixes after maximum aggregation: 32783
APNIC Deaggregation factor: 3.21
Prefixes being announced from the APNIC address blocks: 106191
Unique aggregates announced from the APNIC address blocks: 43449
APNIC Region origin ASes present in the Internet Routing Table: 4805
APNIC Prefixes per ASN: 22.10
APNIC Region origin ASes announcing only one prefix: 1241
APNIC Region transit ASes present in the Internet Routing Table: 791
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 23
Number of APNIC region 32-bit ASNs visible in the Routing Table: 392
Number of APNIC addresses announced to Internet: 716428160
Equivalent to 42 /8s, 179 /16s and 211 /24s
Percentage of available APNIC address space announced: 83.7

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: 156029
Total ARIN prefixes after maximum aggregation: 78433
ARIN Deaggregation factor: 1.99
Prefixes being announced from the ARIN address blocks: 156712
Unique aggregates announced from the ARIN address blocks: 70693
ARIN Region origin ASes present in the Internet Routing Table: 15352
ARIN Prefixes per ASN: 10.21
ARIN Region origin ASes announcing only one prefix: 5798
ARIN Region transit ASes present in the Internet Routing Table: 1589
Average ARIN Region AS path length visible: 4.1
Max ARIN Region AS path length visible: 25
Number of ARIN region 32-bit ASNs visible in the Routing Table: 18
Number of ARIN addresses announced to Internet: 1088537472
Equivalent to 64 /8s, 225 /16s and 195 /24s
Percentage of available ARIN address space announced: 57.6

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: 112675
Total RIPE prefixes after maximum aggregation: 58318
RIPE Deaggregation factor: 1.93
Prefixes being announced from the RIPE address blocks: 115595
Unique aggregates announced from the RIPE address blocks: 74430
RIPE Region origin ASes present in the Internet Routing Table: 17005
RIPE Prefixes per ASN: 6.80
RIPE Region origin ASes announcing only one prefix: 8149
RIPE Region transit ASes present in the Internet Routing Table: 2767
Average RIPE Region AS path length visible: 5.0
Max RIPE Region AS path length visible: 31
Number of RIPE region 32-bit ASNs visible in the Routing Table: 2089
Number of RIPE addresses announced to Internet: 650284644
Equivalent to 38 /8s, 194 /16s and 142 /24s
Percentage of available RIPE address space announced: 94.5

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: 45497
Total LACNIC prefixes after maximum aggregation: 9014
LACNIC Deaggregation factor: 5.05
Prefixes being announced from the LACNIC address blocks: 49079
Unique aggregates announced from the LACNIC address blocks: 23179
LACNIC Region origin ASes present in the Internet Routing Table: 1750
LACNIC Prefixes per ASN: 28.05
LACNIC Region origin ASes announcing only one prefix: 492
LACNIC Region transit ASes present in the Internet Routing Table: 336
Average LACNIC Region AS path length visible: 4.7
Max LACNIC Region AS path length visible: 30
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 729
Number of LACNIC addresses announced to Internet: 120960552
Equivalent to 7 /8s, 53 /16s and 182 /24s
Percentage of available LACNIC address space announced: 72.1

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: 9746
Total AfriNIC prefixes after maximum aggregation: 2352
AfriNIC Deaggregation factor: 4.14
Prefixes being announced from the AfriNIC address blocks: 10348
Unique aggregates announced from the AfriNIC address blocks: 3634
AfriNIC Region origin ASes present in the Internet Routing Table: 586
AfriNIC Prefixes per ASN: 17.66
AfriNIC Region origin ASes announcing only one prefix: 187
AfriNIC Region transit ASes present in the Internet Routing Table: 127
Average AfriNIC Region AS path length visible: 4.7
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: 42914560
Equivalent to 2 /8s, 142 /16s and 211 /24s
Percentage of available AfriNIC address space announced: 42.6

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 2929 11556 912 Korea Telecom (KIX)
17974 2488 829 54 PT TELEKOMUNIKASI INDONESIA
7545 1815 301 88 TPG Internet Pty Ltd
4755 1659 381 174 TATA Communications formerly
9829 1413 1156 42 BSNL National Internet Backbo
9583 1182 88 502 Sify Limited
7552 1147 1070 12 Vietel Corporation
4808 1123 2040 316 CNCGROUP IP network: China169
9498 1039 307 69 BHARTI Airtel Ltd.
24560 1037 385 161 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
7029 3470 1010 215 Windstream Communications Inc
6389 3121 3717 133 bellsouth.net, inc.
18566 2081 382 180 Covad Communications
22773 1947 2932 131 Cox Communications, Inc.
1785 1942 678 125 PaeTec Communications, Inc.
20115 1688 1603 618 Charter Communications
4323 1596 1155 397 Time Warner Telecom
30036 1382 292 716 Mediacom Communications Corp
7018 1292 10533 854 AT&T WorldNet Services
7011 1206 321 685 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 1807 544 16 Corbina telecom
2118 1052 97 15 EUnet/RELCOM Autonomous Syste
34984 883 211 232 BILISIM TELEKOM
12479 869 777 64 Uni2 Autonomous System
13188 765 95 121 Educational Network
31148 743 38 15 FreeNet ISP
20940 726 239 565 Akamai Technologies European
6830 714 2313 435 UPC Distribution Services
58113 633 70 378 LIR DATACENTER TELECOM SRL
8551 620 367 39 Bezeq International

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 2268 387 206 TVCABLE BOGOTA
28573 2249 1298 69 NET Servicos de Comunicao S.A
7303 1674 1139 202 Telecom Argentina Stet-France
8151 1570 2974 353 UniNet S.A. de C.V.
6503 1452 434 65 AVANTEL, S.A.
27947 765 85 93 Telconet S.A
18881 740 716 18 Global Village Telecom
3816 672 309 71 Empresa Nacional de Telecomun
11172 601 86 66 Servicios Alestra S.A de C.V
7738 588 1242 34 Telecomunicacoes da Bahia 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
24863 874 275 36 LINKdotNET AS number
36998 749 48 3 MOBITEL
8452 552 958 13 TEDATA
6713 499 602 20 Itissalat Al-MAGHRIB
24835 291 80 8 RAYA Telecom - Egypt
3741 267 906 225 The Internet Solution
12258 194 28 66 Vodacom Internet Company
15706 191 32 6 Sudatel Internet Exchange Aut
29975 191 667 21 Vodacom
16637 181 697 88 MTN Network Solutions

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 3470 1010 215 Windstream Communications Inc
6389 3121 3717 133 bellsouth.net, inc.
4766 2929 11556 912 Korea Telecom (KIX)
17974 2488 829 54 PT TELEKOMUNIKASI INDONESIA
10620 2268 387 206 TVCABLE BOGOTA
28573 2249 1298 69 NET Servicos de Comunicao S.A
18566 2081 382 180 Covad Communications
22773 1947 2932 131 Cox Communications, Inc.
1785 1942 678 125 PaeTec Communications, Inc.
7545 1815 301 88 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 3121 2988 bellsouth.net, inc.
17974 2488 2434 PT TELEKOMUNIKASI INDONESIA
28573 2249 2180 NET Servicos de Comunicao S.A
10620 2268 2062 TVCABLE BOGOTA
4766 2929 2017 Korea Telecom (KIX)
18566 2081 1901 Covad Communications
1785 1942 1817 PaeTec Communications, Inc.
22773 1947 1816 Cox Communications, Inc.
8402 1807 1791 Corbina telecom
7545 1815 1727 TPG Internet Pty Ltd

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

List of Unregistered Origin ASNs (Global)
-----------------------------------------

Bad AS Designation Network Transit AS Description
61309 UNALLOCATED 5.1.96.0/21 41562 Host4all Sarl
59505 UNALLOCATED 5.2.65.0/24 50673 Serverius AS
59505 UNALLOCATED 5.2.66.0/24 50673 Serverius AS
59530 UNALLOCATED 5.8.182.0/24 31261 GARS Telecom
61408 UNALLOCATED 5.56.0.0/21 174 Cogent Communication
61395 UNALLOCATED 5.83.56.0/22 3292 TDC Tele Danmark
61395 UNALLOCATED 5.83.60.0/22 3292 TDC Tele Danmark
59414 UNALLOCATED 5.102.144.0/21 15576 Nextra backbone in D
59395 UNALLOCATED 5.133.16.0/21 3549 Global Crossing
59407 UNALLOCATED 5.134.16.0/21 51167 Giga-Hosting GmbH

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
128.0.24.0/21 41794 Altline LLC
128.0.64.0/22 49466 Declic Telecom SAS
128.0.68.0/22 49466 Declic Telecom SAS
128.0.72.0/21 23456 32-bit ASN transition
128.0.80.0/20 52041 Timer LTD
128.0.104.0/23 51848 FOP Gabidullina Ludmila Nikol
128.0.128.0/20 29285 AMT closed joint-stock compan
128.0.144.0/22 59675 >>UNKNOWN<<
128.0.160.0/21 23456 32-bit ASN transition

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

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

Network Origin AS Description
27.112.114.0/24 23884 Proimage Engineering and Comm
41.222.80.0/21 37110 Moztel LDA
41.223.108.0/22 36966 >>UNKNOWN<<
62.12.96.0/19 38478 SunnyVision Limited
62.61.220.0/24 24974 Tachyon Europe BV - Wireless
62.61.221.0/24 24974 Tachyon Europe BV - Wireless
64.66.32.0/20 18864 >>UNKNOWN<<
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.

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 /8:18 /9:13 /10:29 /11:87 /12:244
/13:476 /14:857 /15:1544 /16:12487 /17:6563 /18:10954
/19:21623 /20:31026 /21:33012 /22:44353 /23:40794 /24:229861
/25:1310 /26:1692 /27:855 /28:181 /29:80 /30:17
/31:0 /32:21

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

ASN No of nets Total ann. Description
7029 2728 3470 Windstream Communications Inc
18566 2031 2081 Covad Communications
6389 1775 3121 bellsouth.net, inc.
8402 1532 1807 Corbina telecom
30036 1285 1382 Mediacom Communications Corp
22773 1279 1947 Cox Communications, Inc.
11492 1156 1193 Cable One
1785 1023 1942 PaeTec Communications, Inc.
6503 980 1452 AVANTEL, S.A.
7011 954 1206 Citizens Utilities

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

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

1:699 2:731 3:3 4:13 5:696 6:3
8:489 12:1934 13:3 14:701 15:11 16:3
17:6 20:27 23:220 24:1794 27:1467 31:1339
32:54 33:2 34:2 36:11 37:1138 38:841
39:2 40:142 41:2642 42:179 44:3 46:1718
47:3 49:522 50:652 52:12 54:28 55:8
56:1 57:28 58:1069 59:558 60:237 61:1307
62:1037 63:2018 64:4364 65:2202 66:4500 67:2081
68:1201 69:3332 70:938 71:557 72:1898 74:2626
75:475 76:293 77:1034 78:1023 79:518 80:1206
81:978 82:644 83:536 84:532 85:1156 86:459
87:971 88:354 89:1748 90:304 91:5381 92:608
93:1620 94:1980 95:1665 96:487 97:337 98:971
99:40 100:31 101:286 103:1969 105:501 106:117
107:203 108:510 109:1738 110:833 111:981 112:465
113:744 114:642 115:902 116:891 117:776 118:964
119:1279 120:375 121:707 122:1729 123:1174 124:1320
125:1298 128:809 129:200 130:304 131:643 132:316
133:142 134:255 135:62 136:215 137:235 138:344
139:169 140:182 141:300 142:516 143:351 144:489
145:89 146:517 147:324 148:729 149:334 150:147
151:239 152:399 153:187 154:23 155:444 156:231
157:379 158:257 159:684 160:334 161:419 162:371
163:193 164:581 165:458 166:472 167:569 168:1003
169:131 170:1007 171:164 172:4 173:1655 174:629
175:448 176:883 177:1485 178:1714 180:1358 181:189
182:1118 183:294 184:633 185:136 186:2173 187:1446
188:1888 189:1571 190:6200 192:6079 193:5710 194:4488
195:3594 196:1243 197:307 198:4005 199:5156 200:6050
201:2018 202:8847 203:8716 204:4479 205:2557 206:2825
207:2829 208:4062 209:3656 210:2904 211:1553 212:2006
213:1867 214:860 215:90 216:5132 217:1563 218:596
219:321 220:1259 221:543 222:324 223:374

End of report
_______________________________________________
bgp-stats mailing list
bgp-stats@lists.apnic.net
http://mailman.apnic.net/mailman/listinfo/bgp-stats
Posted by Admin at 10:56 AM

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)