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.

Thursday, May 3, 2012

[bgp-stats] Routing Table Report - London view

* BGP Routing Table Analysis Reports *
Routing Table Report 08:00 +10GMT Fri 04 May, 2012

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

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

BGP routing table entries examined: 400731
Prefixes after maximum aggregation: 170975
Deaggregation factor: 2.34
Unique aggregates announced to Internet: 198207
Total ASes present in the Internet Routing Table: 38436
Prefixes per ASN: 10.43
Origin-only ASes present in the Internet Routing Table: 33127
Origin ASes announcing only one prefix: 15642
Transit ASes present in the Internet Routing Table: 5309
Transit-only ASes present in the Internet Routing Table: 119
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: 1209
Unregistered ASNs in the Routing Table: 220
Number of 32-bit ASNs allocated by the RIRs: 2658
Number of 32-bit ASNs visible in the Routing Table: 0
Prefixes from 32-bit ASNs in the Routing Table: 5703
Special use prefixes present in the Routing Table: 8
Prefixes being announced from unallocated address space: 122
Number of addresses announced to Internet: 2564426240
Equivalent to 152 /8s, 218 /16s and 10 /24s
Percentage of available address space announced: 69.2
Percentage of allocated address space announced: 69.3
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: 169525

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

Prefixes being announced by APNIC Region ASes: 93906
Total APNIC prefixes after maximum aggregation: 30836
APNIC Deaggregation factor: 3.05
Prefixes being announced from the APNIC address blocks: 91364
Unique aggregates announced from the APNIC address blocks: 39850
APNIC Region origin ASes present in the Internet Routing Table: 4641
APNIC Prefixes per ASN: 19.69
APNIC Region origin ASes announcing only one prefix: 1262
APNIC Region transit ASes present in the Internet Routing Table: 705
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: 644172800
Equivalent to 38 /8s, 101 /16s and 76 /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: 149115
Total ARIN prefixes after maximum aggregation: 75913
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 120349
Unique aggregates announced from the ARIN address blocks: 50568
ARIN Region origin ASes present in the Internet Routing Table: 15007
ARIN Prefixes per ASN: 8.02
ARIN Region origin ASes announcing only one prefix: 5729
ARIN Region transit ASes present in the Internet Routing Table: 1514
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: 808982016
Equivalent to 48 /8s, 56 /16s and 22 /24s
Percentage of available ARIN address space announced: 64.5

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: 102175
Total RIPE prefixes after maximum aggregation: 53909
RIPE Deaggregation factor: 1.90
Prefixes being announced from the RIPE address blocks: 94132
Unique aggregates announced from the RIPE address blocks: 58425
RIPE Region origin ASes present in the Internet Routing Table: 16521
RIPE Prefixes per ASN: 5.70
RIPE Region origin ASes announcing only one prefix: 8045
RIPE Region transit ASes present in the Internet Routing Table: 2610
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: 511348224
Equivalent to 30 /8s, 122 /16s and 142 /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: 40124
Total LACNIC prefixes after maximum aggregation: 8107
LACNIC Deaggregation factor: 4.95
Prefixes being announced from the LACNIC address blocks: 40251
Unique aggregates announced from the LACNIC address blocks: 20270
LACNIC Region origin ASes present in the Internet Routing Table: 1580
LACNIC Prefixes per ASN: 25.48
LACNIC Region origin ASes announcing only one prefix: 441
LACNIC Region transit ASes present in the Internet Routing Table: 291
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: 99820544
Equivalent to 5 /8s, 243 /16s and 36 /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: 8920
Total AfriNIC prefixes after maximum aggregation: 2143
AfriNIC Deaggregation factor: 4.16
Prefixes being announced from the AfriNIC address blocks: 6971
Unique aggregates announced from the AfriNIC address blocks: 2221
AfriNIC Region origin ASes present in the Internet Routing Table: 530
AfriNIC Prefixes per ASN: 13.15
AfriNIC Region origin ASes announcing only one prefix: 165
AfriNIC Region transit ASes present in the Internet Routing Table: 120
Average AfriNIC Region AS path length visible: 3.4
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: 31723776
Equivalent to 1 /8s, 228 /16s and 17 /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 1910 11105 694 Korea Telecom (KIX)
17974 1777 510 73 PT Telekomunikasi Indonesia
7545 1659 301 87 TPG Internet Pty Ltd
4755 1552 384 153 TATA Communications formerly
9829 1263 1069 30 National Internet Backbone
9583 1150 85 495 Sify Limited
7552 1131 1062 11 Vietel Corporation
24560 1023 385 166 Bharti Airtel Ltd., Telemedia
9498 961 291 65 BHARTI Airtel Ltd.
4808 955 1938 286 CNCGROUP IP network China169

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 3425 3807 199 BellSouth.net Inc.
7029 3405 1016 171 Windstream Communications Inc
18566 2093 382 179 Covad Communications Co.
1785 1911 680 129 PaeTec Communications, Inc.
20115 1640 1566 619 Charter Communications
4323 1601 1060 382 tw telecom holdings, inc.
22773 1590 2911 115 Cox Communications Inc.
30036 1421 260 765 Mediacom Communications Corp
7018 1254 13910 823 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 1615 544 16 Corbina telecom
2118 1304 97 14 EUnet/RELCOM Autonomous Syste
34984 688 188 172 BILISIM TELEKOM
31148 682 37 9 FreeNet ISP
6830 655 2215 426 UPC Broadband
12479 648 669 68 France Telecom Espana SA
20940 629 207 501 Akamai Technologies European
9116 541 326 32 Goldenlines main autonomous s
3320 532 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 1854 332 179 Types of queries are: POCs, o
28573 1798 1130 59 Types of queries are: POCs, o
6503 1523 418 66 Axtel, S.A.B. de C.V.
7303 1371 837 188 Telecom Argentina S.A.
8151 1331 2981 331 Uninet S.A. de C.V.
26615 904 761 33 Tim Celular S.A.
27947 663 74 98 Telconet S.A
11172 645 107 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 1307 958 13 TEDATA
24863 840 274 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
29571 157 15 16 Ci Telecom Autonomous system
36923 157 20 4 Swift Networks Limited

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 3425 3807 199 BellSouth.net Inc.
7029 3405 1016 171 Windstream Communications Inc
18566 2093 382 179 Covad Communications Co.
1785 1911 680 129 PaeTec Communications, Inc.
4766 1910 11105 694 Korea Telecom (KIX)
10620 1854 332 179 Types of queries are: POCs, o
28573 1798 1130 59 Types of queries are: POCs, o
17974 1777 510 73 PT Telekomunikasi Indonesia
7545 1659 301 87 TPG Internet Pty Ltd
20115 1640 1566 619 Charter Communications

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 3405 3234 Windstream Communications Inc
18566 2093 1914 Covad Communications Co.
1785 1911 1782 PaeTec Communications, Inc.
28573 1798 1739 Types of queries are: POCs, o
17974 1777 1704 PT Telekomunikasi Indonesia
10620 1854 1675 Types of queries are: POCs, o
8402 1615 1599 Corbina telecom
7545 1659 1572 TPG Internet Pty Ltd
22773 1590 1475 Cox Communications Inc.
6503 1523 1457 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
5.11.8.0/21 30844 Econet Satellite Services Ltd
5.11.64.0/20 31214 TIS-DIALOG Autonomous system
5.11.96.0/20 8220 COLT Technology Services
5.22.160.0/19 31042 Serbia BroadBand-Srpske Kablo
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

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 /10:29 /11:82 /12:235
/13:460 /14:829 /15:1490 /16:12189 /17:6205 /18:10463
/19:20621 /20:28919 /21:29794 /22:40082 /23:37723 /24:211049
/25:11 /26:20 /27:20 /28:146 /29:142 /30:65
/31:0 /32:125

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

ASN No of nets Total ann. Description
7029 3044 3405 Windstream Communications Inc
6389 2142 3425 BellSouth.net Inc.
18566 2042 2093 Covad Communications Co.
10620 1712 1854 Types of queries are: POCs, o
8402 1593 1615 Corbina telecom
30036 1365 1421 Mediacom Communications Corp
6503 1281 1523 Axtel, S.A.B. de C.V.
11492 1149 1186 CABLE ONE, INC.
8452 1108 1307 TEDATA
1785 1073 1911 PaeTec Communications, Inc.

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

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

1:535 2:594 4:14 6:3 8:405 12:1958
13:1 14:607 15:12 16:3 17:5 20:23
23:163 24:1757 27:1287 31:971 32:52 33:2
34:2 36:8 37:422 38:791 40:118 41:3092
42:131 44:3 46:1415 47:3 49:410 50:540
52:13 54:10 55:11 56:3 57:27 58:913
59:479 60:248 61:1102 62:986 63:2031 64:4158
65:2244 66:4462 67:2037 68:1162 69:3169 70:903
71:484 72:1828 74:2611 75:494 76:317 77:939
78:954 79:489 80:1212 81:905 82:673 83:545
84:482 85:1197 86:423 87:922 88:339 89:1656
90:291 91:4770 92:526 93:1493 94:1506 95:892
96:360 97:315 98:852 99:34 100:7 101:180
103:1018 106:101 107:191 108:262 109:1331 110:746
111:914 112:442 113:581 114:623 115:799 116:906
117:700 118:902 119:1190 120:347 121:669 122:1632
123:1102 124:1315 125:1246 128:526 129:188 130:244
131:617 132:170 133:22 134:235 135:62 136:212
137:173 138:356 139:163 140:467 141:243 142:391
143:429 144:519 145:70 146:495 147:280 148:750
149:306 150:150 151:180 152:462 153:172 154:11
155:415 156:214 157:331 158:175 159:472 160:337
161:236 162:345 163:181 164:580 165:401 166:572
167:467 168:816 169:127 170:861 171:127 172:2
173:1760 174:565 175:423 176:652 177:709 178:1346
180:1198 181:82 182:930 183:291 184:481 185:1
186:2252 187:1066 188:1227 189:1774 190:5451 192:5972
193:5554 194:4662 195:3596 196:1248 197:134 198:3610
199:4531 200:5660 201:1921 202:8252 203:8509 204:4262
205:2464 206:2659 207:2724 208:4048 209:3606 210:2655
211:1451 212:2009 213:1941 214:849 215:102 216:5102
217:1542 218:528 219:315 220:1227 221:538 222:295
223:325

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)