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, May 2, 2012

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

* BGP Routing Table Analysis Reports *
Routing Table Report 00:00 GMT Thu 03 May, 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: 412511
Prefixes after maximum aggregation: 174469
Deaggregation factor: 2.36
Unique aggregates announced to Internet: 198433
Total ASes present in the Internet Routing Table: 40893
Prefixes per ASN: 10.09
Origin-only ASes present in the Internet Routing Table: 33199
Origin ASes announcing only one prefix: 15643
Transit ASes present in the Internet Routing Table: 5396
Transit-only ASes present in the Internet Routing Table: 125
Average AS path length visible in the Internet Routing Table: 4.2
Max AS path length visible: 30
Max AS path prepend of ASN ( 2115) 25
Prefixes from unregistered ASNs in the Routing Table: 6211
Unregistered ASNs in the Routing Table: 145
Number of 32-bit ASNs allocated by the RIRs: 2656
Number of 32-bit ASNs visible in the Routing Table: 2298
Prefixes from 32-bit ASNs in the Routing Table: 5759
Special use prefixes present in the Routing Table: 86
Prefixes being announced from unallocated address space: 118
Number of addresses announced to Internet: 2541207124
Equivalent to 151 /8s, 119 /16s and 190 /24s
Percentage of available address space announced: 68.6
Percentage of allocated address space announced: 68.6
Percentage of available address space allocated: 99.9
Percentage of address space in use by end-sites: 92.5
Total number of prefixes smaller than registry allocations: 175292

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

Prefixes being announced by APNIC Region ASes: 97500
Total APNIC prefixes after maximum aggregation: 31156
APNIC Deaggregation factor: 3.13
Prefixes being announced from the APNIC address blocks: 94051
Unique aggregates announced from the APNIC address blocks: 39814
APNIC Region origin ASes present in the Internet Routing Table: 4677
APNIC Prefixes per ASN: 20.11
APNIC Region origin ASes announcing only one prefix: 1259
APNIC Region transit ASes present in the Internet Routing Table: 726
Average APNIC Region AS path length visible: 4.3
Max APNIC Region AS path length visible: 20
Number of APNIC region 32-bit ASNs visible in the Routing Table: 192
Number of APNIC addresses announced to Internet: 644374016
Equivalent to 38 /8s, 104 /16s and 94 /24s
Percentage of available APNIC address space announced: 81.7

APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319,
58368-59391, 131072-132095, 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: 153366
Total ARIN prefixes after maximum aggregation: 78676
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 124043
Unique aggregates announced from the ARIN address blocks: 50602
ARIN Region origin ASes present in the Internet Routing Table: 15080
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: 1548
Average ARIN Region AS path length visible: 3.9
Max ARIN Region AS path length visible: 23
Number of ARIN region 32-bit ASNs visible in the Routing Table: 17
Number of ARIN addresses announced to Internet: 807416064
Equivalent to 48 /8s, 32 /16s and 49 /24s
Percentage of available ARIN address space announced: 64.4

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, 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: 105047
Total RIPE prefixes after maximum aggregation: 54143
RIPE Deaggregation factor: 1.94
Prefixes being announced from the RIPE address blocks: 96110
Unique aggregates announced from the RIPE address blocks: 58459
RIPE Region origin ASes present in the Internet Routing Table: 16544
RIPE Prefixes per ASN: 5.81
RIPE Region origin ASes announcing only one prefix: 8049
RIPE Region transit ASes present in the Internet Routing Table: 2622
Average RIPE Region AS path length visible: 4.4
Max RIPE Region AS path length visible: 30
Number of RIPE region 32-bit ASNs visible in the Routing Table: 1547
Number of RIPE addresses announced to Internet: 511456396
Equivalent to 30 /8s, 124 /16s and 52 /24s
Percentage of available RIPE address space announced: 82.4

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: 41647
Total LACNIC prefixes after maximum aggregation: 8267
LACNIC Deaggregation factor: 5.04
Prefixes being announced from the LACNIC address blocks: 41530
Unique aggregates announced from the LACNIC address blocks: 20283
LACNIC Region origin ASes present in the Internet Routing Table: 1591
LACNIC Prefixes per ASN: 26.10
LACNIC Region origin ASes announcing only one prefix: 439
LACNIC Region transit ASes present in the Internet Routing Table: 298
Average LACNIC Region AS path length visible: 4.4
Max LACNIC Region AS path length visible: 22
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 537
Number of LACNIC addresses announced to Internet: 99779848
Equivalent to 5 /8s, 242 /16s and 133 /24s
Percentage of available LACNIC address space announced: 66.1

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,
200/8, 201/8,

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

Prefixes being announced by AfriNIC Region ASes: 8968
Total AfriNIC prefixes after maximum aggregation: 2159
AfriNIC Deaggregation factor: 4.15
Prefixes being announced from the AfriNIC address blocks: 6993
Unique aggregates announced from the AfriNIC address blocks: 2231
AfriNIC Region origin ASes present in the Internet Routing Table: 539
AfriNIC Prefixes per ASN: 12.97
AfriNIC Region origin ASes announcing only one prefix: 169
AfriNIC Region transit ASes present in the Internet Routing Table: 121
Average AfriNIC Region AS path length visible: 4.4
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: 31810560
Equivalent to 1 /8s, 229 /16s and 100 /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 1914 11105 694 Korea Telecom (KIX)
17974 1867 510 73 PT TELEKOMUNIKASI INDONESIA
7545 1659 301 87 TPG Internet Pty Ltd
4755 1577 385 156 Videsh Sanchar Nigam Ltd. Aut
9829 1262 1069 30 BSNL National Internet Backbo
7552 1175 1062 11 Vietel Corporation
9583 1149 85 494 Sify Limited
4808 1043 2021 307 CNCGROUP IP network: China169
24560 1026 385 167 Bharti Airtel Ltd.
9498 960 291 65 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 3425 3807 195 bellsouth.net, inc.
7029 3413 1016 171 Windstream Communications Inc
18566 2092 382 179 Covad Communications
1785 1906 680 130 AppliedTheory Corporation
20115 1640 1566 620 Charter Communications
4323 1595 1060 383 Time Warner Telecom
22773 1590 2911 115 Cox Communications, Inc.
30036 1422 261 766 Mediacom Communications Corp
7018 1253 13894 822 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 1647 544 16 Corbina telecom
2118 1304 97 14 EUnet/RELCOM Autonomous Syste
15557 1160 2247 53 LDCOM NETWORKS
286 1056 853 197 KPNQwest Backbone AS
34984 687 188 172 Tellcom Iletisim Hizmetleri
31148 682 37 9 FreeNet ISP
6830 657 2216 428 UPC Distribution Services
12479 650 668 66 Uni2 Autonomous System
20940 631 207 501 Akamai Technologies European
8551 574 360 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 1854 332 179 TVCABLE BOGOTA
28573 1820 1114 58 Types of queries are: POCs, o
6503 1540 418 67 AVANTEL, S.A.
8151 1527 2982 325 Uninet S.A. de C.V.
7303 1363 830 188 Telecom Argentina Stet-France
26615 904 761 33 Types of queries are: POCs, o
27947 686 74 98 Telconet S.A
11172 645 107 74 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 1312 958 13 TEDATA
24863 841 274 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
29571 157 15 16 Ci Telecom Autonomous system
36923 157 20 4 Swift Networks Limited

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 3425 3807 195 bellsouth.net, inc.
7029 3413 1016 171 Windstream Communications Inc
18566 2092 382 179 Covad Communications
4766 1914 11105 694 Korea Telecom (KIX)
1785 1906 680 130 AppliedTheory Corporation
17974 1867 510 73 PT TELEKOMUNIKASI INDONESIA
10620 1854 332 179 TVCABLE BOGOTA
28573 1820 1114 58 Types of queries are: POCs, o
7545 1659 301 87 TPG Internet Pty Ltd
8402 1647 544 16 Corbina telecom

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 3413 3242 Windstream Communications Inc
18566 2092 1913 Covad Communications
17974 1867 1794 PT TELEKOMUNIKASI INDONESIA
1785 1906 1776 AppliedTheory Corporation
28573 1820 1762 Types of queries are: POCs, o
10620 1854 1675 TVCABLE BOGOTA
8402 1647 1631 Corbina telecom
7545 1659 1572 TPG Internet Pty Ltd
22773 1590 1475 Cox Communications, Inc.
6503 1540 1473 AVANTEL, S.A.

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

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

Bad AS Designation Network Transit AS Description
65220 PRIVATE 5.1.32.0/21 23456 >>UNKNOWN<<
23456 UNALLOCATED 5.1.56.0/21 2819 KPNQwest Czechia AS
23456 UNALLOCATED 5.1.104.0/21 56484 FastIraq, LLC
23456 UNALLOCATED 5.2.0.0/21 8928 Interoute Telecommun
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

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
5.10.144.0/20 25160 Vorboss LTD AS Number
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
27.54.144.0/24 45774 Chandra Net Pvt. Limited, Ind

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 /8:19 /9:12 /10:28 /11:81 /12:234
/13:461 /14:838 /15:1532 /16:12396 /17:6513 /18:10946
/19:21193 /20:30202 /21:30537 /22:41057 /23:38622 /24:216224
/25:71 /26:77 /27:106 /28:272 /29:112 /30:498
/31:21 /32:459

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

ASN No of nets Total ann. Description
7029 3051 3413 Windstream Communications Inc
6389 2142 3425 bellsouth.net, inc.
18566 2041 2092 Covad Communications
10620 1712 1854 TVCABLE BOGOTA
8402 1625 1647 Corbina telecom
30036 1366 1422 Mediacom Communications Corp
6503 1297 1540 AVANTEL, S.A.
11492 1149 1186 Cable One
8452 1110 1312 TEDATA
15557 1107 1160 LDCOM NETWORKS

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

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

1:542 2:534 4:18 6:3 8:407 12:1994
13:1 14:617 15:12 16:3 17:5 20:23
23:163 24:1771 27:1290 31:977 32:119 33:2
34:2 36:8 37:429 38:799 39:4 40:120
41:3100 42:135 44:3 46:1468 47:3 49:419
50:544 52:13 54:10 55:9 56:3 57:38
58:964 59:493 60:253 61:1217 62:1037 63:2025
64:4208 65:2257 66:4498 67:2058 68:1347 69:3295
70:949 71:485 72:1857 73:1 74:2666 75:507
76:329 77:947 78:984 79:504 80:1257 81:916
82:676 83:548 84:603 85:1209 86:768 87:941
88:353 89:1658 90:291 91:4792 92:523 93:1653
94:1514 95:896 96:362 97:315 98:909 99:37
100:7 101:189 103:1038 106:102 107:191 108:273
109:1674 110:765 111:920 112:454 113:599 114:650
115:809 116:936 117:720 118:924 119:1230 120:357
121:716 122:1674 123:1110 124:1390 125:1246 128:563
129:197 130:258 131:622 132:179 133:22 134:247
135:62 136:213 137:177 138:356 139:178 140:493
141:248 142:410 143:539 144:521 145:70 146:501
147:290 148:807 149:306 150:157 151:179 152:464
153:172 154:13 155:416 156:216 157:377 158:176
159:542 160:338 161:260 162:348 163:191 164:584
165:419 166:573 167:467 168:822 169:129 170:861
171:127 172:2 173:1783 174:583 175:449 176:679
177:702 178:1365 180:1235 181:82 182:834 183:292
184:481 185:1 186:2275 187:1065 188:1226 189:1801
190:5551 192:6047 193:5578 194:4689 195:3685 196:1279
197:131 198:3673 199:4577 200:5838 201:1943 202:8571
203:8656 204:4341 205:2505 206:2772 207:2811 208:4075
209:3656 210:2760 211:1489 212:2052 213:1948 214:848
215:104 216:5152 217:1543 218:545 219:333 220:1238
221:559 222:329 223:337

End of report
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