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 - London view

* BGP Routing Table Analysis Reports *
Routing Table Report 08:00 +10GMT Thu 26 Apr, 2012

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

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

BGP routing table entries examined: 399824
Prefixes after maximum aggregation: 170845
Deaggregation factor: 2.34
Unique aggregates announced to Internet: 197945
Total ASes present in the Internet Routing Table: 38398
Prefixes per ASN: 10.41
Origin-only ASes present in the Internet Routing Table: 33099
Origin ASes announcing only one prefix: 15631
Transit ASes present in the Internet Routing Table: 5299
Transit-only ASes present in the Internet Routing Table: 121
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 27
Max AS path prepend of ASN ( 2115) 25
Prefixes from unregistered ASNs in the Routing Table: 1205
Unregistered ASNs in the Routing Table: 219
Number of 32-bit ASNs allocated by the RIRs: 2623
Number of 32-bit ASNs visible in the Routing Table: 0
Prefixes from 32-bit ASNs in the Routing Table: 5610
Special use prefixes present in the Routing Table: 8
Prefixes being announced from unallocated address space: 116
Number of addresses announced to Internet: 2556968960
Equivalent to 152 /8s, 104 /16s and 64 /24s
Percentage of available address space announced: 69.0
Percentage of allocated address space announced: 69.1
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: 169153

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

Prefixes being announced by APNIC Region ASes: 93592
Total APNIC prefixes after maximum aggregation: 30860
APNIC Deaggregation factor: 3.03
Prefixes being announced from the APNIC address blocks: 91096
Unique aggregates announced from the APNIC address blocks: 39909
APNIC Region origin ASes present in the Internet Routing Table: 4641
APNIC Prefixes per ASN: 19.63
APNIC Region origin ASes announcing only one prefix: 1264
APNIC Region transit ASes present in the Internet Routing Table: 709
Average APNIC Region AS path length visible: 4.0
Max APNIC Region AS path length visible: 20
Number of APNIC region 32-bit ASNs visible in the Routing Table: 0
Number of APNIC addresses announced to Internet: 643930624
Equivalent to 38 /8s, 97 /16s and 154 /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: 148929
Total ARIN prefixes after maximum aggregation: 75879
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 120291
Unique aggregates announced from the ARIN address blocks: 50320
ARIN Region origin ASes present in the Internet Routing Table: 14992
ARIN Prefixes per ASN: 8.02
ARIN Region origin ASes announcing only one prefix: 5721
ARIN Region transit ASes present in the Internet Routing Table: 1517
Average ARIN Region AS path length visible: 3.3
Max ARIN Region AS path length visible: 16
Number of ARIN region 32-bit ASNs visible in the Routing Table: 0
Number of ARIN addresses announced to Internet: 807256064
Equivalent to 48 /8s, 29 /16s and 192 /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: 102020
Total RIPE prefixes after maximum aggregation: 53750
RIPE Deaggregation factor: 1.90
Prefixes being announced from the RIPE address blocks: 93959
Unique aggregates announced from the RIPE address blocks: 58411
RIPE Region origin ASes present in the Internet Routing Table: 16490
RIPE Prefixes per ASN: 5.70
RIPE Region origin ASes announcing only one prefix: 8037
RIPE Region transit ASes present in the Internet Routing Table: 2591
Average RIPE Region AS path length visible: 3.5
Max RIPE Region AS path length visible: 27
Number of RIPE region 32-bit ASNs visible in the Routing Table: 0
Number of RIPE addresses announced to Internet: 510728704
Equivalent to 30 /8s, 113 /16s and 26 /24s
Percentage of available RIPE address space announced: 82.3

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: 39937
Total LACNIC prefixes after maximum aggregation: 8162
LACNIC Deaggregation factor: 4.89
Prefixes being announced from the LACNIC address blocks: 39975
Unique aggregates announced from the LACNIC address blocks: 20265
LACNIC Region origin ASes present in the Internet Routing Table: 1582
LACNIC Prefixes per ASN: 25.27
LACNIC Region origin ASes announcing only one prefix: 444
LACNIC Region transit ASes present in the Internet Routing Table: 289
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: 0
Number of LACNIC addresses announced to Internet: 99229184
Equivalent to 5 /8s, 234 /16s and 30 /24s
Percentage of available LACNIC address space announced: 65.7

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: 8921
Total AfriNIC prefixes after maximum aggregation: 2126
AfriNIC Deaggregation factor: 4.20
Prefixes being announced from the AfriNIC address blocks: 7017
Unique aggregates announced from the AfriNIC address blocks: 2186
AfriNIC Region origin ASes present in the Internet Routing Table: 533
AfriNIC Prefixes per ASN: 13.17
AfriNIC Region origin ASes announcing only one prefix: 165
AfriNIC Region transit ASes present in the Internet Routing Table: 114
Average AfriNIC Region AS path length visible: 3.5
Max AfriNIC Region AS path length visible: 24
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 0
Number of AfriNIC addresses announced to Internet: 31773696
Equivalent to 1 /8s, 228 /16s and 212 /24s
Percentage of available AfriNIC address space announced: 47.3

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 1732 508 72 PT Telekomunikasi Indonesia
7545 1672 301 88 TPG Internet Pty Ltd
4755 1558 384 155 TATA Communications formerly
9829 1248 1069 30 National Internet Backbone
9583 1146 85 491 Sify Limited
7552 1100 1062 11 Vietel Corporation
24560 1024 385 167 Bharti Airtel Ltd., Telemedia
4808 958 1938 287 CNCGROUP IP network China169
18101 948 131 155 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 3426 3807 200 BellSouth.net Inc.
7029 3403 1016 170 Windstream Communications Inc
18566 2092 382 179 Covad Communications Co.
1785 1906 680 129 PaeTec Communications, Inc.
20115 1639 1566 619 Charter Communications
4323 1602 1060 384 tw telecom holdings, inc.
22773 1579 2910 114 Cox Communications Inc.
30036 1414 258 764 Mediacom Communications Corp
7018 1267 9807 827 AT&T Services, Inc.
11492 1186 216 364 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
8402 1670 544 16 Corbina telecom
2118 1304 97 14 EUnet/RELCOM Autonomous Syste
34984 681 188 174 BILISIM TELEKOM
31148 679 37 9 FreeNet ISP
6830 655 2215 426 UPC Broadband
12479 642 666 62 France Telecom Espana SA
20940 623 204 495 Akamai Technologies European
9116 541 326 32 Goldenlines main autonomous s
3320 531 8441 397 Deutsche Telekom AG
8551 503 360 80 Bezeq International

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 1832 329 171 Types of queries are: POCs, o
28573 1780 1109 60 Types of queries are: POCs, o
6503 1522 418 66 Axtel, S.A.B. de C.V.
7303 1362 829 187 Telecom Argentina S.A.
8151 1337 2965 337 Uninet S.A. de C.V.
26615 902 697 32 Tim Celular S.A.
27947 662 74 98 Telconet S.A
11172 641 107 74 Alestra, S. de R.L. de C.V.
22047 582 326 15 Types of queries are: POCs, o
3816 575 242 100 Types of queries are: POCs, o

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 1303 958 13 TEDATA
24863 838 274 32 LINKdotNET AS number
6713 493 649 18 Itissalat Al-MAGHRIB
3741 265 921 223 The Internet Solution
12258 197 28 62 Vodacom Internet Company
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 MTN Network Solutions
29571 157 15 16 Ci Telecom Autonomous system

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 3426 3807 200 BellSouth.net Inc.
7029 3403 1016 170 Windstream Communications Inc
18566 2092 382 179 Covad Communications Co.
4766 1928 11104 694 Korea Telecom (KIX)
1785 1906 680 129 PaeTec Communications, Inc.
10620 1832 329 171 Types of queries are: POCs, o
28573 1780 1109 60 Types of queries are: POCs, o
17974 1732 508 72 PT Telekomunikasi Indonesia
7545 1672 301 88 TPG Internet Pty Ltd
8402 1670 544 16 Corbina telecom

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

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

ASN No of nets Net Savings Description
7029 3403 3233 Windstream Communications Inc
18566 2092 1913 Covad Communications Co.
1785 1906 1777 PaeTec Communications, Inc.
28573 1780 1720 Types of queries are: POCs, o
10620 1832 1661 Types of queries are: POCs, o
17974 1732 1660 PT Telekomunikasi Indonesia
8402 1670 1654 Corbina telecom
7545 1672 1584 TPG Internet Pty Ltd
22773 1579 1465 Cox Communications Inc.
6503 1522 1456 Axtel, S.A.B. de C.V.

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
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.
25639 UNALLOCATED 12.41.169.0/24 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
128.0.0.0/21 12654 RIPE NCC RIS Project
128.0.24.0/24 12654 RIPE NCC RIS Project
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
5.1.0.0/19 21219 PRIVATE JOINT STOCK COMPANY "
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/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 /10:28 /11:81 /12:236
/13:460 /14:828 /15:1486 /16:12192 /17:6218 /18:10452
/19:20625 /20:28828 /21:29685 /22:40060 /23:37545 /24:210511
/25:11 /26:21 /27:20 /28:151 /29:146 /30:69
/31:0 /32:139

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

ASN No of nets Total ann. Description
7029 3043 3403 Windstream Communications Inc
6389 2143 3426 BellSouth.net Inc.
18566 2041 2092 Covad Communications Co.
10620 1709 1832 Types of queries are: POCs, o
8402 1648 1670 Corbina telecom
30036 1360 1414 Mediacom Communications Corp
6503 1281 1522 Axtel, S.A.B. de C.V.
11492 1149 1186 CABLE ONE, INC.
8452 1103 1303 TEDATA
1785 1071 1906 PaeTec Communications, Inc.

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

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

1:537 2:717 4:14 6:3 8:406 12:1978
13:1 14:602 15:12 16:3 17:7 20:23
23:166 24:1763 27:1267 31:974 32:52 33:2
34:2 36:8 37:414 38:794 40:120 41:3142
42:134 44:3 46:1482 47:3 49:401 50:535
52:13 54:8 55:10 56:3 57:28 58:914
59:487 60:247 61:1091 62:982 63:1989 64:4163
65:2250 66:4445 67:2019 68:1165 69:3186 70:901
71:484 72:1826 74:2599 75:494 76:319 77:942
78:1005 79:484 80:1209 81:898 82:672 83:548
84:481 85:1197 86:419 87:928 88:339 89:1644
90:291 91:4756 92:521 93:1361 94:1503 95:1150
96:353 97:315 98:908 99:34 100:7 101:167
103:1003 106:86 107:191 108:218 109:1296 110:743
111:916 112:446 113:581 114:638 115:794 116:883
117:704 118:907 119:1189 120:347 121:672 122:1630
123:1089 124:1298 125:1235 128:508 129:188 130:249
131:622 132:173 133:22 134:232 135:62 136:212
137:173 138:355 139:146 140:465 141:243 142:384
143:396 144:516 145:74 146:496 147:277 148:745
149:305 150:151 151:176 152:463 153:171 154:10
155:417 156:212 157:335 158:176 159:456 160:336
161:240 162:345 163:181 164:574 165:404 166:572
167:468 168:814 169:127 170:859 171:127 172:2
173:1754 174:577 175:423 176:441 177:668 178:1326
180:1180 181:82 182:791 183:289 184:457 185:1
186:2227 187:1042 188:1215 189:1785 190:5465 192:5966
193:5535 194:4652 195:3581 196:1261 197:131 198:3612
199:4485 200:5677 201:1914 202:8250 203:8492 204:4246
205:2470 206:2659 207:2724 208:4049 209:3610 210:2661
211:1453 212:2015 213:1907 214:830 215:102 216:5115
217:1524 218:529 219:312 220:1225 221:539 222:295
223:322

End of report
_______________________________________________
bgp-stats mailing list
bgp-stats@lists.apnic.net
http://mailman.apnic.net/mailman/listinfo/bgp-stats
Posted by Admin at 3:32 PM

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)