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, April 5, 2011

[bgp-stats] Routing Table Report - London view

* BGP Routing Table Analysis Reports *
Routing Table Report 08:00 +10GMT Wed 06 Apr, 2011

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

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

BGP routing table entries examined: 347094
Prefixes after maximum aggregation: 157827
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 174246
Total ASes present in the Internet Routing Table: 36061
Prefixes per ASN: 9.63
Origin-only ASes present in the Internet Routing Table: 31182
Origin ASes announcing only one prefix: 15021
Transit ASes present in the Internet Routing Table: 4879
Transit-only ASes present in the Internet Routing Table: 117
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 25
Max AS path prepend of ASN (32374) 19
Prefixes from unregistered ASNs in the Routing Table: 1957
Unregistered ASNs in the Routing Table: 346
Number of 32-bit ASNs allocated by the RIRs: 1259
Number of 32-bit ASNs visible in the Routing Table: 0
Prefixes from 32-bit ASNs in the Routing Table: 2105
Special use prefixes present in the Routing Table: 6
Prefixes being announced from unallocated address space: 191
Number of addresses announced to Internet: 2419694848
Equivalent to 144 /8s, 57 /16s and 157 /24s
Percentage of available address space announced: 65.3
Percentage of allocated address space announced: 65.3
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.2
Total number of prefixes smaller than registry allocations: 142220

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

Prefixes being announced by APNIC Region ASes: 83701
Total APNIC prefixes after maximum aggregation: 28465
APNIC Deaggregation factor: 2.94
Prefixes being announced from the APNIC address blocks: 81489
Unique aggregates announced from the APNIC address blocks: 36645
APNIC Region origin ASes present in the Internet Routing Table: 4332
APNIC Prefixes per ASN: 18.81
APNIC Region origin ASes announcing only one prefix: 1223
APNIC Region transit ASes present in the Internet Routing Table: 667
Average APNIC Region AS path length visible: 4.1
Max APNIC Region AS path length visible: 23
Number of APNIC region 32-bit ASNs visible in the Routing Table: 0
Number of APNIC addresses announced to Internet: 601445120
Equivalent to 35 /8s, 217 /16s and 83 /24s
Percentage of available APNIC address space announced: 76.3

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: 137304
Total ARIN prefixes after maximum aggregation: 70354
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 110145
Unique aggregates announced from the ARIN address blocks: 45027
ARIN Region origin ASes present in the Internet Routing Table: 14220
ARIN Prefixes per ASN: 7.75
ARIN Region origin ASes announcing only one prefix: 5449
ARIN Region transit ASes present in the Internet Routing Table: 1414
Average ARIN Region AS path length visible: 3.3
Max ARIN Region AS path length visible: 22
Number of ARIN region 32-bit ASNs visible in the Routing Table: 0
Number of ARIN addresses announced to Internet: 797672448
Equivalent to 47 /8s, 139 /16s and 132 /24s
Percentage of available ARIN address space announced: 63.4

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: 83577
Total RIPE prefixes after maximum aggregation: 47482
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 76805
Unique aggregates announced from the RIPE address blocks: 50521
RIPE Region origin ASes present in the Internet Routing Table: 15468
RIPE Prefixes per ASN: 4.97
RIPE Region origin ASes announcing only one prefix: 7779
RIPE Region transit ASes present in the Internet Routing Table: 2387
Average RIPE Region AS path length visible: 3.5
Max RIPE Region AS path length visible: 25
Number of RIPE region 32-bit ASNs visible in the Routing Table: 0
Number of RIPE addresses announced to Internet: 465882880
Equivalent to 27 /8s, 196 /16s and 207 /24s
Percentage of available RIPE address space announced: 75.1

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: 32044
Total LACNIC prefixes after maximum aggregation: 7311
LACNIC Deaggregation factor: 4.38
Prefixes being announced from the LACNIC address blocks: 31100
Unique aggregates announced from the LACNIC address blocks: 16285
LACNIC Region origin ASes present in the Internet Routing Table: 1427
LACNIC Prefixes per ASN: 21.79
LACNIC Region origin ASes announcing only one prefix: 437
LACNIC Region transit ASes present in the Internet Routing Table: 250
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 18
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 0
Number of LACNIC addresses announced to Internet: 81658624
Equivalent to 4 /8s, 222 /16s and 3 /24s
Percentage of available LACNIC address space announced: 54.1

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: 7619
Total AfriNIC prefixes after maximum aggregation: 1834
AfriNIC Deaggregation factor: 4.15
Prefixes being announced from the AfriNIC address blocks: 5989
Unique aggregates announced from the AfriNIC address blocks: 1869
AfriNIC Region origin ASes present in the Internet Routing Table: 441
AfriNIC Prefixes per ASN: 13.58
AfriNIC Region origin ASes announcing only one prefix: 133
AfriNIC Region transit ASes present in the Internet Routing Table: 96
Average AfriNIC Region AS path length visible: 3.4
Max AfriNIC Region AS path length visible: 17
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 0
Number of AfriNIC addresses announced to Internet: 22710016
Equivalent to 1 /8s, 90 /16s and 135 /24s
Percentage of available AfriNIC address space announced: 33.8

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 1875 9507 605 Korea Telecom (KIX)
7545 1545 301 85 TPG Internet Pty Ltd
17974 1445 472 34 PT Telekomunikasi Indonesia
4755 1439 638 168 TATA Communications formerly
24560 1137 322 204 Bharti Airtel Ltd., Telemedia
9583 1055 77 494 Sify Limited
9829 999 867 54 National Internet Backbone
4808 945 2022 274 CNCGROUP IP network China169
17488 939 162 97 Hathway IP Over Cable Interne
18101 936 116 139 Reliance Infocom Ltd Internet

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 3664 3838 262 BellSouth.net Inc.
4323 2533 1106 395 tw telecom holdings, inc.
1785 1791 681 131 PaeTec Communications, Inc.
6478 1605 305 34 AT&T Services, Inc.
18566 1597 330 198 Covad Communications Co.
20115 1535 1551 641 Charter Communications
19262 1491 4939 299 Verizon Online LLC
7018 1368 6946 895 AT&T Services, Inc.
11492 1307 240 15 CABLE ONE, INC.
22773 1291 2865 84 Cox Communications 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 541 326 30 Goldenlines main autonomous s
6830 513 1780 318 UPC Broadband
34984 484 97 186 BILISIM TELEKOM
3292 454 2013 391 TDC Data Networks
20940 451 128 341 Akamai Technologies European
8866 446 134 26 Bulgarian Telecommunication C
3320 412 7604 358 Deutsche Telekom AG
8551 405 355 38 Bezeq International
702 400 1803 313 >>UNKNOWN<<
12479 400 577 6 France Telecom Espana SA

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 1406 262 152 Types of queries are: POCs, o
28573 1251 972 86 Types of queries are: POCs, o
8151 1229 2661 365 Uninet S.A. de C.V.
6503 1110 354 73 Axtel, S.A.B. de C.V.
7303 900 464 136 Telecom Argentina S.A.
14420 642 52 91 CORPORACION NACIONAL DE TELEC
22047 568 310 15 Types of queries are: POCs, o
3816 515 225 97 Types of queries are: POCs, o
11172 485 99 80 Alestra, S. de R.L. de C.V.
7738 479 922 30 Telecomunicacoes da Bahia 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
8452 837 445 11 TEDATA
24863 772 147 36 LINKdotNET AS number
15475 424 90 8 Nile Online
36992 292 271 14 Etisalat MISR
3741 266 985 227 The Internet Solution
6713 231 215 12 Itissalat Al-MAGHRIB
24835 231 78 10 RAYA Telecom - Egypt
33776 227 13 5 Starcomms Nigeria Limited
29571 191 17 11 Ci Telecom Autonomous system
16637 147 441 86 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 3664 3838 262 BellSouth.net Inc.
4323 2533 1106 395 tw telecom holdings, inc.
23456 2105 507 1141 32-bit ASN transition
4766 1875 9507 605 Korea Telecom (KIX)
1785 1791 681 131 PaeTec Communications, Inc.
6478 1605 305 34 AT&T Services, Inc.
18566 1597 330 198 Covad Communications Co.
7545 1545 301 85 TPG Internet Pty Ltd
20115 1535 1551 641 Charter Communications
19262 1491 4939 299 Verizon Online LLC

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 2533 2138 tw telecom holdings, inc.
1785 1791 1660 PaeTec Communications, Inc.
6478 1605 1571 AT&T Services, Inc.
7545 1545 1460 TPG Internet Pty Ltd
17974 1445 1411 PT Telekomunikasi Indonesia
18566 1597 1399 Covad Communications Co.
11492 1307 1292 CABLE ONE, INC.
4755 1439 1271 TATA Communications formerly
4766 1875 1270 Korea Telecom (KIX)
10620 1406 1254 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 *
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.
21861 UNALLOCATED 12.37.59.0/24 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 65535 Internet Assigned Numbers Aut
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
1.3.0.0/16 38639 for assignment to JPNIC membe
2.56.0.0/16 44559 E-Rent LLC
24.225.128.0/18 36377 Comcast Telecommunications, I
24.225.192.0/23 36377 Comcast Telecommunications, I
24.225.192.0/18 36377 Comcast Telecommunications, I
24.225.224.0/21 36377 Comcast Telecommunications, I
24.225.237.0/24 36377 Comcast Telecommunications, I
24.225.248.0/21 36377 Comcast Telecommunications, I
31.0.0.0/15 8374 Polkomtel S.A.
31.2.0.0/17 8374 Polkomtel S.A.

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 /8:20 /9:12 /10:26 /11:74 /12:218
/13:447 /14:767 /15:1377 /16:11545 /17:5694 /18:9382
/19:19175 /20:24927 /21:25244 /22:33517 /23:31967 /24:182217
/25:11 /26:17 /27:24 /28:160 /29:100 /30:52
/31:0 /32:121

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

ASN No of nets Total ann. Description
6389 2259 3664 BellSouth.net Inc.
18566 1576 1597 Covad Communications Co.
6478 1559 1605 AT&T Services, Inc.
4323 1356 2533 tw telecom holdings, inc.
10620 1296 1406 Types of queries are: POCs, o
11492 1256 1307 CABLE ONE, INC.
23456 1092 2105 32-bit ASN transition
7011 1068 1168 Frontier Communications of Am
1785 1056 1791 PaeTec Communications, Inc.
6503 894 1110 Axtel, S.A.B. de C.V.

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

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

1:287 2:57 4:14 5:1 8:351 12:2006
13:1 14:419 15:15 16:3 17:8 20:9
23:5 24:1588 27:709 31:56 32:55 33:2
34:2 37:1 38:747 39:1 40:101 41:2375
42:1 44:3 46:785 47:4 49:149 50:149
52:13 55:4 56:2 57:27 58:791 59:477
60:385 61:1054 62:1006 63:1912 64:3843 65:2330
66:4295 67:1810 68:1075 69:2942 70:700 71:343
72:1899 73:1 74:2326 75:285 76:336 77:852
78:699 79:462 80:1085 81:815 82:512 83:467
84:648 85:1040 86:557 87:773 88:339 89:1584
90:176 91:3650 92:496 93:1044 94:1260 95:775
96:453 97:253 98:817 99:35 101:41 106:1
107:4 108:78 109:937 110:531 111:668 112:314
113:383 114:494 115:698 116:918 117:672 118:753
119:1131 120:286 121:689 122:1607 123:1040 124:1248
125:1249 128:212 129:168 130:166 131:560 132:101
133:20 134:209 135:49 136:210 137:139 138:301
139:103 140:463 141:173 142:361 143:383 144:472
145:52 146:438 147:202 148:620 149:262 150:159
151:187 152:296 153:180 154:2 155:389 156:185
157:325 158:131 159:374 160:316 161:232 162:275
163:156 164:489 165:348 166:504 167:416 168:715
169:153 170:772 171:74 172:2 173:1261 174:532
175:338 177:76 178:796 180:799 181:3 182:405
183:198 184:239 185:1 186:1101 187:918 188:929
189:1040 190:4802 192:5722 193:4809 194:3462 195:2949
196:1210 197:17 198:3526 199:3848 200:5542 201:1482
202:8137 203:8344 204:4050 205:2296 206:2518 207:2926
208:3912 209:3473 210:2646 211:1356 212:1988 213:1698
214:713 215:66 216:4831 217:1629 218:545 219:381
220:1189 221:462 222:312 223:102

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

Posted by Admin at 3:34 PM

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)