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, February 20, 2011

[bgp-stats] Routing Table Report - London view

* BGP Routing Table Analysis Reports *
Routing Table Report 08:00 +10GMT Mon 21 Feb, 2011

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

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

BGP routing table entries examined: 342198
Prefixes after maximum aggregation: 155785
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 171332
Total ASes present in the Internet Routing Table: 35739
Prefixes per ASN: 9.57
Origin-only ASes present in the Internet Routing Table: 30928
Origin ASes announcing only one prefix: 14972
Transit ASes present in the Internet Routing Table: 4811
Transit-only ASes present in the Internet Routing Table: 109
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 27
Max AS path prepend of ASN (22394) 24
Prefixes from unregistered ASNs in the Routing Table: 1329
Unregistered ASNs in the Routing Table: 262
Number of 32-bit ASNs allocated by the RIRs: 1137
Prefixes from 32-bit ASNs in the Routing Table: 1728
Special use prefixes present in the Routing Table: 6
Prefixes being announced from unallocated address space: 186
Number of addresses announced to Internet: 2413626112
Equivalent to 143 /8s, 221 /16s and 3 /24s
Percentage of available address space announced: 65.1
Percentage of allocated address space announced: 65.1
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 88.0
Total number of prefixes smaller than registry allocations: 140225

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

Prefixes being announced by APNIC Region ASes: 82111
Total APNIC prefixes after maximum aggregation: 28005
APNIC Deaggregation factor: 2.93
Prefixes being announced from the APNIC address blocks: 79753
Unique aggregates announced from the APNIC address blocks: 35800
APNIC Region origin ASes present in the Internet Routing Table: 4277
APNIC Prefixes per ASN: 18.65
APNIC Region origin ASes announcing only one prefix: 1215
APNIC Region transit ASes present in the Internet Routing Table: 656
Average APNIC Region AS path length visible: 4.2
Max APNIC Region AS path length visible: 26
Number of APNIC addresses announced to Internet: 589574912
Equivalent to 35 /8s, 36 /16s and 51 /24s
Percentage of available APNIC address space announced: 74.8

APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079
55296-56319, 131072-132095
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: 136768
Total ARIN prefixes after maximum aggregation: 70019
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 109637
Unique aggregates announced from the ARIN address blocks: 44892
ARIN Region origin ASes present in the Internet Routing Table: 14114
ARIN Prefixes per ASN: 7.77
ARIN Region origin ASes announcing only one prefix: 5384
ARIN Region transit ASes present in the Internet Routing Table: 1386
Average ARIN Region AS path length visible: 3.3
Max ARIN Region AS path length visible: 27
Number of ARIN addresses announced to Internet: 787372800
Equivalent to 46 /8s, 238 /16s and 91 /24s
Percentage of available ARIN address space announced: 62.6

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, 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: 82381
Total RIPE prefixes after maximum aggregation: 46586
RIPE Deaggregation factor: 1.77
Prefixes being announced from the RIPE address blocks: 75782
Unique aggregates announced from the RIPE address blocks: 49155
RIPE Region origin ASes present in the Internet Routing Table: 15329
RIPE Prefixes per ASN: 4.94
RIPE Region origin ASes announcing only one prefix: 7797
RIPE Region transit ASes present in the Internet Routing Table: 2369
Average RIPE Region AS path length visible: 3.5
Max RIPE Region AS path length visible: 25
Number of RIPE addresses announced to Internet: 460320000
Equivalent to 27 /8s, 111 /16s and 237 /24s
Percentage of available RIPE address space announced: 74.2

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
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: 31314
Total LACNIC prefixes after maximum aggregation: 7299
LACNIC Deaggregation factor: 4.29
Prefixes being announced from the LACNIC address blocks: 30221
Unique aggregates announced from the LACNIC address blocks: 15928
LACNIC Region origin ASes present in the Internet Routing Table: 1418
LACNIC Prefixes per ASN: 21.31
LACNIC Region origin ASes announcing only one prefix: 443
LACNIC Region transit ASes present in the Internet Routing Table: 247
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 18
Number of LACNIC addresses announced to Internet: 80784384
Equivalent to 4 /8s, 208 /16s and 172 /24s
Percentage of available LACNIC address space announced: 53.5

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: 7227
Total AfriNIC prefixes after maximum aggregation: 1812
AfriNIC Deaggregation factor: 3.99
Prefixes being announced from the AfriNIC address blocks: 5645
Unique aggregates announced from the AfriNIC address blocks: 1814
AfriNIC Region origin ASes present in the Internet Routing Table: 433
AfriNIC Prefixes per ASN: 13.04
AfriNIC Region origin ASes announcing only one prefix: 133
AfriNIC Region transit ASes present in the Internet Routing Table: 94
Average AfriNIC Region AS path length visible: 3.4
Max AfriNIC Region AS path length visible: 17
Number of AfriNIC addresses announced to Internet: 21849856
Equivalent to 1 /8s, 77 /16s and 103 /24s
Percentage of available AfriNIC address space announced: 32.6

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 1838 9491 575 Korea Telecom (KIX)
7545 1611 302 86 TPG Internet Pty Ltd
4755 1418 638 165 TATA Communications formerly
17974 1400 467 30 PT Telekomunikasi Indonesia
24560 1111 323 184 Bharti Airtel Ltd., Telemedia
9583 1043 76 487 Sify Limited
17488 950 162 103 Hathway IP Over Cable Interne
4808 939 2034 271 CNCGROUP IP network China169
18101 930 117 141 Reliance Infocom Ltd Internet
9829 890 762 45 National Internet Backbone

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

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

ASN No of nets /20 equiv MaxAgg Description
6389 3695 3855 262 BellSouth.net Inc.
4323 2615 1125 406 tw telecom holdings, inc.
19262 1843 4955 283 Verizon Online LLC
1785 1787 697 131 PaeTec Communications, Inc.
20115 1527 1534 646 Charter Communications
6478 1518 296 79 AT&T Services, Inc.
18566 1432 319 155 Covad Communications Co.
7018 1383 6708 897 AT&T Services, Inc.
2386 1300 554 937 AT&T Data Communications Serv
11492 1280 236 73 CABLE ONE, INC.

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

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

ASN No of nets /20 equiv MaxAgg Description
9116 542 328 31 Goldenlines main autonomous s
6830 511 1764 317 UPC Broadband
9198 468 267 15 Kazakhtelecom Data Network Ad
34984 464 98 143 BILISIM TELEKOM
3292 447 1996 388 TDC Data Networks
8866 440 133 23 Bulgarian Telecommunication C
20940 413 98 319 Akamai Technologies European
3320 409 7620 356 Deutsche Telekom AG
8551 405 355 38 Bezeq International
702 401 1803 314 >>UNKNOWN<<

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

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

ASN No of nets /20 equiv MaxAgg Description
10620 1374 255 166 Types of queries are: POCs, o
28573 1214 961 82 Types of queries are: POCs, o
8151 1211 2663 356 Uninet S.A. de C.V.
6503 1156 354 74 Axtel, S.A.B. de C.V.
7303 878 462 130 Telecom Argentina S.A.
14420 638 57 92 CORPORACION NACIONAL DE TELEC
22047 545 310 15 Types of queries are: POCs, o
3816 510 221 95 Types of queries are: POCs, o
7738 478 922 30 Telecomunicacoes da Bahia S.A
14117 476 37 42 Telefonica del Sur S.A.

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

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

ASN No of nets /20 equiv MaxAgg Description
24863 674 147 37 LINKdotNET AS number
8452 614 445 11 TEDATA
15475 494 90 12 Nile Online
36992 302 271 14 Etisalat MISR
3741 264 987 226 The Internet Solution
24835 220 78 10 RAYA Telecom - Egypt
6713 205 199 12 Itissalat Al-MAGHRIB
33776 201 12 15 Starcomms Nigeria Limited
29571 192 17 11 Ci Telecom Autonomous system
16637 155 439 88 MTN Network Solutions

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

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

ASN No of nets /20 equiv MaxAgg Description
6389 3695 3855 262 BellSouth.net Inc.
4323 2615 1125 406 tw telecom holdings, inc.
19262 1843 4955 283 Verizon Online LLC
4766 1838 9491 575 Korea Telecom (KIX)
1785 1787 697 131 PaeTec Communications, Inc.
23456 1728 433 978 32-bit ASN transition
7545 1611 302 86 TPG Internet Pty Ltd
20115 1527 1534 646 Charter Communications
6478 1518 296 79 AT&T Services, Inc.
18566 1432 319 155 Covad Communications Co.

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

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

ASN No of nets Net Savings Description
4323 2615 2209 tw telecom holdings, inc.
1785 1787 1656 PaeTec Communications, Inc.
19262 1843 1560 Verizon Online LLC
7545 1611 1525 TPG Internet Pty Ltd
6478 1518 1439 AT&T Services, Inc.
17974 1400 1370 PT Telekomunikasi Indonesia
18566 1432 1277 Covad Communications Co.
4766 1838 1263 Korea Telecom (KIX)
4755 1418 1253 TATA Communications formerly
10620 1374 1208 Types of queries are: POCs, o

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

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

Bad AS Designation Network Transit AS Description
65333 PRIVATE 10.0.0.0/8 0 *
16927 UNALLOCATED 12.0.252.0/23 7018 AT&T Services, Inc.
32805 UNALLOCATED 12.1.225.0/24 7018 AT&T Services, Inc.
15132 UNALLOCATED 12.9.150.0/24 7018 AT&T Services, Inc.
32567 UNALLOCATED 12.14.170.0/24 7018 AT&T Services, Inc.
16504 UNALLOCATED 12.18.155.0/24 30170 Optic Fusion
13746 UNALLOCATED 12.24.56.0/24 7018 AT&T Services, Inc.
32567 UNALLOCATED 12.25.107.0/24 4323 tw telecom holdings,
30031 UNALLOCATED 12.27.122.0/24 7018 AT&T Services, Inc.
26095 UNALLOCATED 12.34.8.0/24 7018 AT&T Services, Inc.

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

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

Prefix Origin AS Description
10.0.0.0/8 65333 Internet Assigned Numbers Aut
169.254.0.0/16 65333 Internet Assigned Numbers Aut
172.16.0.0/12 65333 Internet Assigned Numbers Aut
192.0.2.0/24 65333 Internet Assigned Numbers Aut
192.168.0.0/16 0 *
198.18.0.0/15 65333 Internet Assigned Numbers Aut

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

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

Network Origin AS Description
5.0.0.0/16 12654 RIPE NCC RIS Project
5.1.0.0/21 12654 RIPE NCC RIS Project
5.1.24.0/24 12654 RIPE NCC RIS Project
24.129.192.0/19 7922 Comcast Cable Communications,
37.0.0.0/16 12654 RIPE NCC RIS Project
37.1.0.0/21 12654 RIPE NCC RIS Project
37.1.24.0/24 12654 RIPE NCC RIS Project
39.0.0.0/8 237 Merit Network Inc.
41.57.192.0/18 22750 BCSNET
41.222.79.0/24 36938 >>UNKNOWN<<

Complete listing at http://thyme.rand.apnic.net/london/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 /8:22 /9:10 /10:26 /11:72 /12:216
/13:444 /14:763 /15:1367 /16:11470 /17:5634 /18:9291
/19:18937 /20:24427 /21:24799 /22:32874 /23:31467 /24:179931
/25:11 /26:17 /27:24 /28:154 /29:93 /30:43
/31:0 /32:106

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

ASN No of nets Total ann. Description
6389 2281 3695 BellSouth.net Inc.
6478 1472 1518 AT&T Services, Inc.
18566 1410 1432 Covad Communications Co.
4323 1405 2615 tw telecom holdings, inc.
10620 1265 1374 Types of queries are: POCs, o
11492 1237 1280 CABLE ONE, INC.
7011 1057 1160 Frontier Communications of Am
1785 1054 1787 PaeTec Communications, Inc.
23456 988 1728 32-bit ASN transition
19262 954 1843 Verizon Online LLC

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

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

1:198 2:51 4:13 5:1 8:335 12:2029
13:1 14:385 15:15 16:3 17:8 20:9
23:1 24:1487 27:584 32:56 33:4 34:2
37:1 38:702 40:101 41:2176 44:3 46:629
47:4 49:149 50:93 52:12 55:2 56:2
57:28 58:761 59:463 60:388 61:1013 62:1053
63:1932 64:3808 65:2351 66:4227 67:1767 68:1026
69:2898 70:735 71:403 72:2020 73:1 74:2342
75:292 76:347 77:872 78:706 79:448 80:1059
81:821 82:527 83:478 84:632 85:1050 86:559
87:760 88:355 89:1573 90:157 91:3519 92:493
93:1039 94:1207 95:770 96:448 97:251 98:828
99:33 101:27 107:3 108:88 109:931 110:482
111:696 112:303 113:366 114:479 115:648 116:913
117:675 118:667 119:1004 120:240 121:676 122:1619
123:1052 124:1269 125:1251 128:213 129:150 130:166
131:565 132:102 133:20 134:213 135:49 136:212
137:144 138:293 139:117 140:468 141:203 142:342
143:378 144:484 145:51 146:431 147:200 148:616
149:264 150:153 151:230 152:295 153:179 154:2
155:350 156:173 157:313 158:130 159:373 160:313
161:200 162:273 163:147 164:486 165:335 166:504
167:421 168:736 169:149 170:749 171:69 172:25
173:1324 174:533 175:318 176:1 177:13 178:757
180:807 182:351 183:247 184:212 186:1008 187:795
188:895 189:1067 190:4386 192:5747 193:4797 194:3496
195:2935 196:1158 197:3 198:3489 199:3783 200:5567
201:1577 202:8046 203:8340 204:4025 205:2316 206:2539
207:3007 208:3897 209:3470 210:2592 211:1333 212:1942
213:1734 214:762 215:62 216:4874 217:1622 218:529
219:374 220:1193 221:436 222:309 223:92

End of report
_______________________________________________
bgp-stats mailing list
bgp-stats@lists.apnic.net
http://mailman.apnic.net/mailman/listinfo/bgp-stats

Posted by Admin at 2:32 PM

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)