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.

Tuesday, September 11, 2012

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

* BGP Routing Table Analysis Reports *
Routing Table Report 00:00 GMT Wed 12 Sep, 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: 600000
Prefixes after maximum aggregation: 8702
Deaggregation factor: 68.95
Unique aggregates announced to Internet: 8106
Total ASes present in the Internet Routing Table: 4158
Prefixes per ASN: 144.30
Origin-only ASes present in the Internet Routing Table: 2870
Origin ASes announcing only one prefix: 5
Transit ASes present in the Internet Routing Table: 1288
Transit-only ASes present in the Internet Routing Table: 847
Average AS path length visible in the Internet Routing Table: 4.2
Max AS path length visible: 25
Max AS path prepend of ASN ( 16574) 16
Prefixes from unregistered ASNs in the Routing Table: 13007
Unregistered ASNs in the Routing Table: 38
Number of 32-bit ASNs allocated by the RIRs: 3244
Number of 32-bit ASNs visible in the Routing Table: 0
Prefixes from 32-bit ASNs in the Routing Table: 10178
Special use prefixes present in the Routing Table: 1
Prefixes being announced from unallocated address space: 447
Number of addresses announced to Internet: 302790144
Equivalent to 18 /8s, 12 /16s and 54 /24s
Percentage of available address space announced: 8.2
Percentage of allocated address space announced: 8.2
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 93.5
Total number of prefixes smaller than registry allocations: 180281

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

Prefixes being announced by APNIC Region ASes: 158741
Total APNIC prefixes after maximum aggregation: 1233
APNIC Deaggregation factor: 128.74
Prefixes being announced from the APNIC address blocks: 154625
Unique aggregates announced from the APNIC address blocks: 2058
APNIC Region origin ASes present in the Internet Routing Table: 454
APNIC Prefixes per ASN: 340.58
APNIC Region origin ASes announcing only one prefix: 1
APNIC Region transit ASes present in the Internet Routing Table: 210
Average APNIC Region AS path length visible: 4.7
Max APNIC Region AS path length visible: 25
Number of APNIC region 32-bit ASNs visible in the Routing Table: 0
Number of APNIC addresses announced to Internet: 50938112
Equivalent to 3 /8s, 9 /16s and 65 /24s
Percentage of available APNIC address space announced: 6.0

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: 259087
Total ARIN prefixes after maximum aggregation: 4920
ARIN Deaggregation factor: 52.66
Prefixes being announced from the ARIN address blocks: 281849
Unique aggregates announced from the ARIN address blocks: 3318
ARIN Region origin ASes present in the Internet Routing Table: 1746
ARIN Prefixes per ASN: 161.43
ARIN Region origin ASes announcing only one prefix: 2
ARIN Region transit ASes present in the Internet Routing Table: 378
Average ARIN Region AS path length visible: 3.7
Max ARIN Region AS path length visible: 21
Number of ARIN region 32-bit ASNs visible in the Routing Table: 0
Number of ARIN addresses announced to Internet: 207174912
Equivalent to 12 /8s, 89 /16s and 61 /24s
Percentage of available ARIN address space announced: 11.0

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: 169861
Total RIPE prefixes after maximum aggregation: 2180
RIPE Deaggregation factor: 77.92
Prefixes being announced from the RIPE address blocks: 162742
Unique aggregates announced from the RIPE address blocks: 2718
RIPE Region origin ASes present in the Internet Routing Table: 1086
RIPE Prefixes per ASN: 149.85
RIPE Region origin ASes announcing only one prefix: 2
RIPE Region transit ASes present in the Internet Routing Table: 575
Average RIPE Region AS path length visible: 4.3
Max RIPE Region AS path length visible: 18
Number of RIPE region 32-bit ASNs visible in the Routing Table: 0
Number of RIPE addresses announced to Internet: 44470016
Equivalent to 2 /8s, 166 /16s and 143 /24s
Percentage of available RIPE address space announced: 6.5

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: 1451
Total LACNIC prefixes after maximum aggregation: 31
LACNIC Deaggregation factor: 46.81
Prefixes being announced from the LACNIC address blocks: 336
Unique aggregates announced from the LACNIC address blocks: 1
LACNIC Region origin ASes present in the Internet Routing Table: 11
LACNIC Prefixes per ASN: 30.55
LACNIC Region origin ASes announcing only one prefix: 0
LACNIC Region transit ASes present in the Internet Routing Table: 11
Average LACNIC Region AS path length visible: 4.5
Max LACNIC Region AS path length visible: 12
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 0
Number of LACNIC addresses announced to Internet: 65536
Equivalent to 0 /8s, 1 /16s and 0 /24s
Percentage of available LACNIC address space announced: 0.0

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: 296
Total AfriNIC prefixes after maximum aggregation: 3
AfriNIC Deaggregation factor: 98.67
Prefixes being announced from the AfriNIC address blocks: 0
Unique aggregates announced from the AfriNIC address blocks: 0
AfriNIC Region origin ASes present in the Internet Routing Table: 3
AfriNIC Prefixes per ASN: 0.00
AfriNIC Region origin ASes announcing only one prefix: 0
AfriNIC Region transit ASes present in the Internet Routing Table: 3
Average AfriNIC Region AS path length visible: 3.0
Max AfriNIC Region AS path length visible: 6
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 0
Number of AfriNIC addresses announced to Internet: 0
Equivalent to 0 /8s, 0 /16s and 0 /24s
Percentage of available AfriNIC address space announced: 0.0

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
7545 11451 99 7 TPG Internet Pty Ltd
45528 9784 24 58 Tikona Digital Networks,
7552 7584 256 1 Vietel Corporation
17488 6146 55 47 Hathway IP Over Cable Interne
17974 5328 195 6 PT TELEKOMUNIKASI INDONESIA
17841 5054 12 15 MIC EGOVERNMENT
10201 4783 64 1 Cable & Wireless Network Kore
45769 3645 8 35 No. 70, 2nd Floor, 9th Main,
18002 3313 7 30 AS Number for Interdomain Rou
4766 2573 1305 24 Korea Telecom (KIX)

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
2386 18296 88 508 AT&T Data Communications Serv
11492 13265 47 146 Cable One
20115 10725 325 113 Charter Communications
11992 7744 20 10 Integrated Systems
22773 4765 172 16 Cox Communications, Inc.
2914 4610 100 101 Verio, Inc.
40285 4417 10 22 NORTHLAND CABLE TELEVISION IN
714 4003 4096 1 Apple Computer, Inc.
13368 3600 8 4 James Cable Partners
11426 3509 139 37 ServiceCo LLC - Road Runner

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 19922 64 1 Corbina telecom
20940 11216 158 260 Akamai Technologies European
56465 6349 15 6 Sistem Soft Network SRL
47442 4128 8 1 Mada Communications
1273 3540 41 53 Cable & Wireless Deutschland
3257 3308 63 68 Tiscali Intl Network
5541 2783 80 2 SC AD NET MARKET MEDIA SRL
29049 2697 5 8 AzerSat LLC.
1299 2408 40 42 TeliaNet Global Network
44178 2144 688 6 T-Mobile Deutschland GmbH, IP

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
10318 288 16 1 CABLEVISION S.A.
8151 279 6 9 Uninet S.A. de C.V.
27810 251 4 7 Types of queries are: POCs, o
26210 181 0 3 Latin American and Caribbean
27814 127 2 3 Aeprovi
28573 127 2 3 Types of queries are: POCs, o
27797 58 0 1 IBM Argentina S.A.
10481 48 16 1 Prima S.A.
13424 31 1 1 Intercity
26617 31 0 1 Navega.com S.A.

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
3741 132 1 1 The Internet Solution
5713 132 1 1 Telkom SA Ltd
8452 32 1 1 TEDATA

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
8402 19922 64 1 Corbina telecom
2386 18296 88 508 AT&T Data Communications Serv
11492 13265 47 146 Cable One
7545 11451 99 7 TPG Internet Pty Ltd
20940 11216 158 260 Akamai Technologies European
20115 10725 325 113 Charter Communications
45528 9784 24 58 Tikona Digital Networks,
11992 7744 20 10 Integrated Systems
7552 7584 256 1 Vietel Corporation
56465 6349 15 6 Sistem Soft Network SRL

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

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

ASN No of nets Net Savings Description
2386 18296 17788 AT&T Data Communications Serv
11492 13265 13119 Cable One
7545 11451 11444 TPG Internet Pty Ltd
20940 11216 10956 Akamai Technologies European
20115 10725 10612 Charter Communications
45528 9784 9726 Tikona Digital Networks,
11992 7744 7734 Integrated Systems
7552 7584 7583 Vietel Corporation
56465 6349 6343 Sistem Soft Network SRL
17488 6146 6099 Hathway IP Over Cable Interne

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 5.1.32.0/21 29119 ServiHosting Autonom
23456 UNALLOCATED 5.1.32.0/21 29119 ServiHosting Autonom
23456 UNALLOCATED 5.1.32.0/21 29119 ServiHosting Autonom
23456 UNALLOCATED 5.1.32.0/21 29119 ServiHosting Autonom
23456 UNALLOCATED 5.1.32.0/21 29119 ServiHosting Autonom
23456 UNALLOCATED 5.1.32.0/21 29119 ServiHosting Autonom
23456 UNALLOCATED 5.1.32.0/21 29119 ServiHosting Autonom
23456 UNALLOCATED 5.1.32.0/21 29119 ServiHosting Autonom
23456 UNALLOCATED 5.1.32.0/21 29119 ServiHosting Autonom
23456 UNALLOCATED 5.1.32.0/21 29119 ServiHosting Autonom

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

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

Prefix Origin AS Description
0.0.0.0/0 19151 WebUseNet Corp

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

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

Network Origin AS Description
5.226.184.0/21 50478 BVOX AS
5.226.184.0/21 50478 BVOX AS
5.226.184.0/21 50478 BVOX AS
5.226.184.0/21 50478 BVOX AS
5.226.184.0/21 50478 BVOX AS
5.226.184.0/21 50478 BVOX AS
5.226.184.0/21 50478 BVOX AS
5.226.184.0/21 50478 BVOX AS
5.226.184.0/21 50478 BVOX AS
5.226.184.0/21 50478 BVOX AS

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

Number of prefixes announced per prefix length (Global)
-------------------------------------------------------

!!Default route being announced!!

/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:328 /9:290 /10:34 /11:226 /12:770
/13:2080 /14:2250 /15:2794 /16:14403 /17:9380 /18:16169
/19:27200 /20:73603 /21:51761 /22:63862 /23:53564 /24:281234
/25:17 /26:27 /27:1 /28:1 /29:0 /30:5
/31:0 /32:0

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

ASN No of nets Total ann. Description
8402 19890 19922 Corbina telecom
11492 13171 13265 Cable One
11992 7650 7744 Integrated Systems
56465 6317 6349 Sistem Soft Network SRL
40285 4206 4417 NORTHLAND CABLE TELEVISION IN
20115 4154 10725 Charter Communications
47442 3840 4128 Mada Communications
13368 3600 3600 James Cable Partners
22773 3392 4765 Cox Communications, Inc.
29049 2697 2697 AzerSat LLC.

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

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

1:17303 2:21633 3:30 4:380 5:13288 6:99
8:13519 12:60004 13:30 14:19788 15:330 16:92
17:180 20:810 23:6177 24:53629 27:40485 31:30721
32:1709 33:60 34:60 36:217 37:690

End of report
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