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.

Wednesday, April 25, 2012

[bgp-stats] Routing Table Report - RouteViews-3 view

* BGP Routing Table Analysis Reports *
Routing Table Report 00:00 GMT Thu 26 Apr, 2012

NB: RouteViews data includes iBGP information from some ASNs.
Treat the information provided below appropriately.

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

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

BGP routing table entries examined: 411789
Prefixes after maximum aggregation: 174437
Deaggregation factor: 2.36
Unique aggregates announced to Internet: 191228
Total ASes present in the Internet Routing Table: 40840
Prefixes per ASN: 10.08
Origin-only ASes present in the Internet Routing Table: 33239
Origin ASes announcing only one prefix: 15626
Transit ASes present in the Internet Routing Table: 5326
Transit-only ASes present in the Internet Routing Table: 129
Average AS path length visible in the Internet Routing Table: 3.8
Max AS path length visible: 29
Max AS path prepend of ASN (36992) 22
Prefixes from unregistered ASNs in the Routing Table: 6137
Unregistered ASNs in the Routing Table: 152
Number of 32-bit ASNs allocated by the RIRs: 2623
Number of 32-bit ASNs visible in the Routing Table: 2275
Prefixes from 32-bit ASNs in the Routing Table: 5701
Special use prefixes present in the Routing Table: 86
Prefixes being announced from unallocated address space: 115
Number of addresses announced to Internet: 2360491850
Equivalent to 140 /8s, 178 /16s and 63 /24s
Percentage of available address space announced: 63.7
Percentage of allocated address space announced: 63.8
Percentage of available address space allocated: 99.9
Percentage of address space in use by end-sites: 92.4
Total number of prefixes smaller than registry allocations: 175033

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

Prefixes being announced by APNIC Region ASes: 97204
Total APNIC prefixes after maximum aggregation: 31177
APNIC Deaggregation factor: 3.12
Prefixes being announced from the APNIC address blocks: 93785
Unique aggregates announced from the APNIC address blocks: 38270
APNIC Region origin ASes present in the Internet Routing Table: 4670
APNIC Prefixes per ASN: 20.08
APNIC Region origin ASes announcing only one prefix: 1250
APNIC Region transit ASes present in the Internet Routing Table: 740
Average APNIC Region AS path length visible: 4.0
Max APNIC Region AS path length visible: 24
Number of APNIC region 32-bit ASNs visible in the Routing Table: 190
Number of APNIC addresses announced to Internet: 626616576
Equivalent to 37 /8s, 89 /16s and 105 /24s
Percentage of available APNIC address space announced: 79.5

APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319,
58368-59391, 131072-132095, 132096-133119
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: 153155
Total ARIN prefixes after maximum aggregation: 78710
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 123992
Unique aggregates announced from the ARIN address blocks: 47259
ARIN Region origin ASes present in the Internet Routing Table: 15068
ARIN Prefixes per ASN: 8.23
ARIN Region origin ASes announcing only one prefix: 5727
ARIN Region transit ASes present in the Internet Routing Table: 1530
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 29
Number of ARIN region 32-bit ASNs visible in the Routing Table: 17
Number of ARIN addresses announced to Internet: 668511232
Equivalent to 39 /8s, 216 /16s and 172 /24s
Percentage of available ARIN address space announced: 53.3

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, 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: 104985
Total RIPE prefixes after maximum aggregation: 54049
RIPE Deaggregation factor: 1.94
Prefixes being announced from the RIPE address blocks: 96042
Unique aggregates announced from the RIPE address blocks: 56247
RIPE Region origin ASes present in the Internet Routing Table: 16526
RIPE Prefixes per ASN: 5.81
RIPE Region origin ASes announcing only one prefix: 8035
RIPE Region transit ASes present in the Internet Routing Table: 2566
Average RIPE Region AS path length visible: 4.1
Max RIPE Region AS path length visible: 25
Number of RIPE region 32-bit ASNs visible in the Routing Table: 1530
Number of RIPE addresses announced to Internet: 487864972
Equivalent to 29 /8s, 20 /16s and 58 /24s
Percentage of available RIPE address space announced: 78.6

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
196608-198655
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: 41450
Total LACNIC prefixes after maximum aggregation: 8281
LACNIC Deaggregation factor: 5.01
Prefixes being announced from the LACNIC address blocks: 41276
Unique aggregates announced from the LACNIC address blocks: 20229
LACNIC Region origin ASes present in the Internet Routing Table: 1592
LACNIC Prefixes per ASN: 25.93
LACNIC Region origin ASes announcing only one prefix: 443
LACNIC Region transit ASes present in the Internet Routing Table: 296
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 17
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 533
Number of LACNIC addresses announced to Internet: 99326208
Equivalent to 5 /8s, 235 /16s and 153 /24s
Percentage of available LACNIC address space announced: 65.8

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: 9084
Total AfriNIC prefixes after maximum aggregation: 2151
AfriNIC Deaggregation factor: 4.22
Prefixes being announced from the AfriNIC address blocks: 7137
Unique aggregates announced from the AfriNIC address blocks: 2203
AfriNIC Region origin ASes present in the Internet Routing Table: 541
AfriNIC Prefixes per ASN: 13.19
AfriNIC Region origin ASes announcing only one prefix: 171
AfriNIC Region transit ASes present in the Internet Routing Table: 118
Average AfriNIC Region AS path length visible: 4.0
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: 31798016
Equivalent to 1 /8s, 229 /16s and 51 /24s
Percentage of available AfriNIC address space announced: 47.4

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 1928 11104 694 Korea Telecom (KIX)
17974 1823 509 71 PT TELEKOMUNIKASI INDONESIA
7545 1673 301 89 TPG Internet Pty Ltd
4755 1574 385 158 Videsh Sanchar Nigam Ltd. Aut
9829 1249 1069 30 BSNL National Internet Backbo
7552 1169 1062 11 Vietel Corporation
9583 1146 85 491 Sify Limited
24560 1026 385 167 Bharti Airtel Ltd.
4808 1000 1957 295 CNCGROUP IP network: China169
9498 951 291 64 BHARTI Airtel Ltd.

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

ARIN Region per AS prefix count summary
---------------------------------------

ASN No of nets /20 equiv MaxAgg Description
6389 3427 3807 200 bellsouth.net, inc.
7029 3409 1020 171 Windstream Communications Inc
18566 2092 382 179 Covad Communications
1785 1907 680 130 AppliedTheory Corporation
20115 1640 1566 619 Charter Communications
4323 1604 1060 382 Time Warner Telecom
22773 1580 2910 114 Cox Communications, Inc.
30036 1414 258 764 Mediacom Communications Corp
7018 1273 13904 831 AT&T WorldNet Services
11492 1186 216 364 Cable One

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

RIPE Region per AS prefix count summary
---------------------------------------

ASN No of nets /20 equiv MaxAgg Description
8402 1626 544 16 Corbina telecom
2118 1304 97 14 EUnet/RELCOM Autonomous Syste
15557 1158 2247 53 LDCOM NETWORKS
286 1053 853 197 KPNQwest Backbone AS
34984 681 188 174 Tellcom Iletisim Hizmetleri
31148 680 37 9 FreeNet ISP
6830 656 2215 427 UPC Distribution Services
12479 646 666 62 Uni2 Autonomous System
20940 643 207 505 Akamai Technologies European
8551 575 360 80 Bezeq International

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

LACNIC Region per AS prefix count summary
-----------------------------------------

ASN No of nets /20 equiv MaxAgg Description
10620 1832 329 171 TVCABLE BOGOTA
28573 1790 1109 60 Types of queries are: POCs, o
6503 1543 418 67 AVANTEL, S.A.
8151 1523 2982 322 Uninet S.A. de C.V.
7303 1362 829 187 Telecom Argentina Stet-France
26615 903 697 32 Types of queries are: POCs, o
27947 685 74 98 Telconet S.A
11172 639 91 73 Alestra
22047 582 326 15 Types of queries are: POCs, o
3816 577 242 100 COLOMBIA TELECOMUNICACIONES S

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

AfriNIC Region per AS prefix count summary
------------------------------------------

ASN No of nets /20 equiv MaxAgg Description
8452 1304 958 13 TEDATA
24863 839 274 33 LINKdotNET AS number
6713 493 649 18 Itissalat Al-MAGHRIB
3741 265 921 223 The Internet Solution
12258 197 28 62 YEBO-AS
33776 197 12 21 Starcomms Nigeria Limited
24835 179 80 8 RAYA Telecom - Egypt
15706 169 32 6 Sudatel Internet Exchange Aut
16637 164 666 86 Johnnic e-Ventures
29571 159 15 15 Ci Telecom Autonomous system

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

Global Per AS prefix count summary
----------------------------------

ASN No of nets /20 equiv MaxAgg Description
6389 3427 3807 200 bellsouth.net, inc.
7029 3409 1020 171 Windstream Communications Inc
18566 2092 382 179 Covad Communications
4766 1928 11104 694 Korea Telecom (KIX)
1785 1907 680 130 AppliedTheory Corporation
10620 1832 329 171 TVCABLE BOGOTA
17974 1823 509 71 PT TELEKOMUNIKASI INDONESIA
28573 1790 1109 60 Types of queries are: POCs, o
7545 1673 301 89 TPG Internet Pty Ltd
20115 1640 1566 619 Charter Communications

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

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

ASN No of nets Net Savings Description
7029 3409 3238 Windstream Communications Inc
18566 2092 1913 Covad Communications
1785 1907 1777 AppliedTheory Corporation
17974 1823 1752 PT TELEKOMUNIKASI INDONESIA
28573 1790 1730 Types of queries are: POCs, o
10620 1832 1661 TVCABLE BOGOTA
8402 1626 1610 Corbina telecom
7545 1673 1584 TPG Internet Pty Ltd
6503 1543 1476 AVANTEL, S.A.
22773 1580 1466 Cox Communications, Inc.

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

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

Bad AS Designation Network Transit AS Description
23456 UNALLOCATED 8.10.2.0/24 3257 Tiscali Intl Network
15132 UNALLOCATED 12.9.150.0/24 7018 AT&T WorldNet Servic
32567 UNALLOCATED 12.14.170.0/24 7018 AT&T WorldNet Servic
32567 UNALLOCATED 12.25.107.0/24 4323 Time Warner Telecom
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 12.45.103.0/24 209 Qwest
17300 UNALLOCATED 12.45.110.0/24 701 UUNET Technologies,
16476 UNALLOCATED 12.46.27.0/24 7018 AT&T WorldNet Servic

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

Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------

Prefix Origin AS Description
10.29.245.1/32 286 KPNQwest Backbone AS
10.29.245.2/32 286 KPNQwest Backbone AS
10.29.245.19/32 286 KPNQwest Backbone AS
10.29.245.20/32 286 KPNQwest Backbone AS
10.29.245.21/32 286 KPNQwest Backbone AS
10.29.245.22/32 286 KPNQwest Backbone AS
10.29.245.25/32 286 KPNQwest Backbone AS
10.29.245.26/32 286 KPNQwest Backbone AS
10.29.245.27/32 286 KPNQwest Backbone AS
10.29.245.28/32 286 KPNQwest Backbone AS

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

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

Network Origin AS Description
5.1.0.0/19 21219 Datacom Autonomous System
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

Complete listing at http://thyme.rand.apnic.net/rviews/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 /8:20 /9:12 /10:28 /11:81 /12:235
/13:460 /14:836 /15:1528 /16:12397 /17:6514 /18:10919
/19:21183 /20:30145 /21:30440 /22:41027 /23:38503 /24:215853
/25:70 /26:76 /27:105 /28:272 /29:110 /30:495
/31:19 /32:461

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

ASN No of nets Total ann. Description
7029 3047 3409 Windstream Communications Inc
6389 2144 3427 bellsouth.net, inc.
18566 2041 2092 Covad Communications
10620 1709 1832 TVCABLE BOGOTA
8402 1603 1626 Corbina telecom
30036 1360 1414 Mediacom Communications Corp
6503 1300 1543 AVANTEL, S.A.
11492 1149 1186 Cable One
15557 1105 1158 LDCOM NETWORKS
8452 1104 1304 TEDATA

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

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

1:542 2:645 4:18 6:3 8:406 12:2014
13:1 14:612 15:12 16:3 17:7 20:23
23:167 24:1776 27:1271 31:980 32:119 33:2
34:2 36:8 37:418 38:802 39:4 40:120
41:3194 42:135 44:3 46:1509 47:3 49:409
50:538 52:13 54:8 55:12 56:3 57:39
58:969 59:492 60:252 61:1208 62:1043 63:2008
64:4209 65:2256 66:4516 67:2056 68:1351 69:3304
70:948 71:484 72:1854 73:1 74:2653 75:507
76:331 77:947 78:1012 79:503 80:1255 81:913
82:680 83:553 84:604 85:1218 86:774 87:938
88:359 89:1662 90:291 91:4780 92:526 93:1502
94:1514 95:1176 96:363 97:315 98:910 99:37
100:7 101:176 103:1033 106:102 107:191 108:242
109:1658 110:767 111:921 112:458 113:601 114:649
115:803 116:914 117:723 118:924 119:1231 120:358
121:715 122:1678 123:1097 124:1371 125:1239 128:548
129:197 130:259 131:625 132:180 133:22 134:247
135:62 136:215 137:177 138:355 139:160 140:492
141:244 142:403 143:407 144:522 145:74 146:501
147:291 148:800 149:306 150:159 151:176 152:465
153:171 154:9 155:416 156:215 157:382 158:179
159:528 160:337 161:264 162:350 163:191 164:580
165:420 166:573 167:468 168:821 169:129 170:860
171:127 172:2 173:1773 174:576 175:447 176:439
177:669 178:1339 180:1223 181:81 182:825 183:289
184:460 185:1 186:2261 187:1055 188:1219 189:1792
190:5577 192:6045 193:5564 194:4682 195:3681 196:1302
197:133 198:3677 199:4546 200:5827 201:1938 202:8526
203:8631 204:4331 205:2504 206:2769 207:2809 208:4084
209:3659 210:2759 211:1489 212:2071 213:1942 214:853
215:104 216:5157 217:1544 218:547 219:330 220:1236
221:559 222:330 223:336

End of report
_______________________________________________
bgp-stats mailing list
bgp-stats@lists.apnic.net
http://mailman.apnic.net/mailman/listinfo/bgp-stats
Posted by Admin at 6:06 PM

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)