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, July 11, 2012

[bgp-stats] Routing Table Report - London view

* BGP Routing Table Analysis Reports *
Routing Table Report 08:00 +10GMT Thu 12 Jul, 2012

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

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

BGP routing table entries examined: 407674
Prefixes after maximum aggregation: 173615
Deaggregation factor: 2.35
Unique aggregates announced to Internet: 202499
Total ASes present in the Internet Routing Table: 38729
Prefixes per ASN: 10.53
Origin-only ASes present in the Internet Routing Table: 33356
Origin ASes announcing only one prefix: 15717
Transit ASes present in the Internet Routing Table: 5373
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: 26
Max AS path prepend of ASN ( 51742) 24
Prefixes from unregistered ASNs in the Routing Table: 1030
Unregistered ASNs in the Routing Table: 168
Number of 32-bit ASNs allocated by the RIRs: 2962
Number of 32-bit ASNs visible in the Routing Table: 0
Prefixes from 32-bit ASNs in the Routing Table: 6692
Special use prefixes present in the Routing Table: 6
Prefixes being announced from unallocated address space: 165
Number of addresses announced to Internet: 2583648256
Equivalent to 153 /8s, 255 /16s and 88 /24s
Percentage of available address space announced: 69.7
Percentage of allocated address space announced: 69.8
Percentage of available address space allocated: 99.9
Percentage of address space in use by end-sites: 93.1
Total number of prefixes smaller than registry allocations: 139953

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

Prefixes being announced by APNIC Region ASes: 95702
Total APNIC prefixes after maximum aggregation: 31180
APNIC Deaggregation factor: 3.07
Prefixes being announced from the APNIC address blocks: 96756
Unique aggregates announced from the APNIC address blocks: 41976
APNIC Region origin ASes present in the Internet Routing Table: 4679
APNIC Prefixes per ASN: 20.68
APNIC Region origin ASes announcing only one prefix: 1278
APNIC Region transit ASes present in the Internet Routing Table: 723
Average APNIC Region AS path length visible: 4.1
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: 701927424
Equivalent to 41 /8s, 214 /16s and 144 /24s
Percentage of available APNIC address space announced: 82.0

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: 151020
Total ARIN prefixes after maximum aggregation: 76984
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 152005
Unique aggregates announced from the ARIN address blocks: 68400
ARIN Region origin ASes present in the Internet Routing Table: 15116
ARIN Prefixes per ASN: 10.06
ARIN Region origin ASes announcing only one prefix: 5744
ARIN Region transit ASes present in the Internet Routing Table: 1525
Average ARIN Region AS path length visible: 3.3
Max ARIN Region AS path length visible: 19
Number of ARIN region 32-bit ASNs visible in the Routing Table: 0
Number of ARIN addresses announced to Internet: 1070957568
Equivalent to 63 /8s, 213 /16s and 132 /24s
Percentage of available ARIN address space announced: 56.7

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: 102834
Total RIPE prefixes after maximum aggregation: 55058
RIPE Deaggregation factor: 1.87
Prefixes being announced from the RIPE address blocks: 104970
Unique aggregates announced from the RIPE address blocks: 66994
RIPE Region origin ASes present in the Internet Routing Table: 16633
RIPE Prefixes per ASN: 6.31
RIPE Region origin ASes announcing only one prefix: 8085
RIPE Region transit ASes present in the Internet Routing Table: 2631
Average RIPE Region AS path length visible: 3.5
Max RIPE Region AS path length visible: 26
Number of RIPE region 32-bit ASNs visible in the Routing Table: 0
Number of RIPE addresses announced to Internet: 635228928
Equivalent to 37 /8s, 220 /16s and 211 /24s
Percentage of available RIPE address space announced: 92.3

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
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: 41571
Total LACNIC prefixes after maximum aggregation: 8211
LACNIC Deaggregation factor: 5.06
Prefixes being announced from the LACNIC address blocks: 44212
Unique aggregates announced from the LACNIC address blocks: 21726
LACNIC Region origin ASes present in the Internet Routing Table: 1593
LACNIC Prefixes per ASN: 27.75
LACNIC Region origin ASes announcing only one prefix: 432
LACNIC Region transit ASes present in the Internet Routing Table: 303
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 21
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 0
Number of LACNIC addresses announced to Internet: 112136704
Equivalent to 6 /8s, 175 /16s and 18 /24s
Percentage of available LACNIC address space announced: 66.8

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: 9120
Total AfriNIC prefixes after maximum aggregation: 2128
AfriNIC Deaggregation factor: 4.29
Prefixes being announced from the AfriNIC address blocks: 9565
Unique aggregates announced from the AfriNIC address blocks: 3258
AfriNIC Region origin ASes present in the Internet Routing Table: 556
AfriNIC Prefixes per ASN: 17.20
AfriNIC Region origin ASes announcing only one prefix: 178
AfriNIC Region transit ASes present in the Internet Routing Table: 124
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: 40674560
Equivalent to 2 /8s, 108 /16s and 165 /24s
Percentage of available AfriNIC address space announced: 40.4

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
17974 2139 558 79 PT Telekomunikasi Indonesia
4766 2005 11108 770 Korea Telecom (KIX)
7545 1687 301 87 TPG Internet Pty Ltd
4755 1593 387 160 TATA Communications formerly
9829 1297 1085 28 National Internet Backbone
9583 1166 87 507 Sify Limited
7552 1078 1062 11 Vietel Corporation
24560 1035 385 165 Bharti Airtel Ltd., Telemedia
9498 981 291 67 BHARTI Airtel Ltd.
4808 964 1943 289 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 3390 3774 188 BellSouth.net Inc.
7029 3316 986 161 Windstream Communications Inc
18566 2089 382 181 Covad Communications Co.
1785 1934 681 131 PaeTec Communications, Inc.
22773 1662 2911 121 Cox Communications Inc.
20115 1651 1573 616 Charter Communications
4323 1571 1059 383 tw telecom holdings, inc.
30036 1383 264 783 Mediacom Communications Corp
7018 1264 10077 829 AT&T Services, Inc.
7011 1191 319 691 Frontier Communications of Am

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 1116 544 16 Corbina telecom
12479 793 741 92 France Telecom Espana SA
34984 728 189 174 BILISIM TELEKOM
6830 708 2292 442 UPC Broadband
31148 700 37 9 FreeNet ISP
20940 669 218 526 Akamai Technologies European
2118 662 97 14 EUnet/RELCOM Autonomous Syste
8551 601 364 61 Bezeq International
13188 565 100 10 Ukraine
9116 511 326 31 Goldenlines main autonomous s

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
28573 1993 1214 55 Types of queries are: POCs, o
10620 1990 346 208 Types of queries are: POCs, o
6503 1520 434 69 Axtel, S.A.B. de C.V.
7303 1454 934 194 Telecom Argentina S.A.
8151 1325 3024 337 Uninet S.A. de C.V.
6458 707 81 15 Telgua
27947 685 74 88 Telconet S.A
11172 645 107 75 Alestra, S. de R.L. de C.V.
3816 592 246 90 Types of queries are: POCs, o
22047 583 326 15 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 1157 958 13 TEDATA
24863 862 274 32 LINKdotNET AS number
6713 504 649 18 Itissalat Al-MAGHRIB
24835 285 80 8 RAYA Telecom - Egypt
3741 262 905 223 The Internet Solution
12258 197 28 62 Vodacom Internet Company
33776 181 12 18 Starcomms Nigeria Limited
29975 167 571 19 Vodacom
15706 159 32 6 Sudatel Internet Exchange Aut
29571 159 15 15 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 3390 3774 188 BellSouth.net Inc.
7029 3316 986 161 Windstream Communications Inc
17974 2139 558 79 PT Telekomunikasi Indonesia
18566 2089 382 181 Covad Communications Co.
4766 2005 11108 770 Korea Telecom (KIX)
28573 1993 1214 55 Types of queries are: POCs, o
10620 1990 346 208 Types of queries are: POCs, o
1785 1934 681 131 PaeTec Communications, Inc.
7545 1687 301 87 TPG Internet Pty Ltd
22773 1662 2911 121 Cox Communications Inc.

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 3316 3155 Windstream Communications Inc
17974 2139 2060 PT Telekomunikasi Indonesia
28573 1993 1938 Types of queries are: POCs, o
18566 2089 1908 Covad Communications Co.
1785 1934 1803 PaeTec Communications, Inc.
10620 1990 1782 Types of queries are: POCs, o
7545 1687 1600 TPG Internet Pty Ltd
22773 1662 1541 Cox Communications Inc.
6503 1520 1451 Axtel, S.A.B. de C.V.
4755 1593 1433 TATA Communications formerly

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.
16504 UNALLOCATED 12.18.155.0/24 30170 Optic Fusion
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.
19577 UNALLOCATED 12.41.188.0/24 7832 WW/Precision Communi
13317 UNALLOCATED 12.44.10.0/24 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
5.134.128.0/18 51074 Gostaresh Ertebatate Mabna Co
5.144.136.0/21 8304 ECRITEL 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

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 /12:236
/13:469 /14:840 /15:1513 /16:12234 /17:6356 /18:10662
/19:20716 /20:29586 /21:31112 /22:40579 /23:38777 /24:213870
/25:11 /26:22 /27:19 /28:149 /29:153 /30:84
/31:0 /32:143

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

ASN No of nets Total ann. Description
7029 2672 3316 Windstream Communications Inc
18566 2039 2089 Covad Communications Co.
6389 1868 3390 BellSouth.net Inc.
30036 1320 1383 Mediacom Communications Corp
11492 1154 1191 CABLE ONE, INC.
22773 1092 1662 Cox Communications Inc.
6503 1051 1520 Axtel, S.A.B. de C.V.
1785 1044 1934 PaeTec Communications, Inc.
7011 928 1191 Frontier Communications of Am
8452 925 1157 TEDATA

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

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

1:523 2:417 3:1 4:13 5:112 6:3
8:433 12:1973 13:1 14:623 15:12 16:3
17:5 20:24 23:187 24:1786 27:1317 31:1030
32:51 33:2 34:2 36:8 37:594 38:817
39:1 40:128 41:3013 42:141 44:3 46:1534
47:2 49:423 50:545 52:13 54:14 55:6
56:1 57:41 58:921 59:524 60:242 61:1227
62:926 63:2033 64:4227 65:2237 66:4486 67:2007
68:1143 69:3187 70:980 71:512 72:1836 74:2596
75:478 76:334 77:925 78:889 79:492 80:1223
81:939 82:661 83:528 84:498 85:1145 86:427
87:933 88:358 89:1669 90:300 91:5017 92:567
93:1294 94:1561 95:1051 96:372 97:318 98:888
99:36 100:20 101:250 103:1224 106:115 107:188
108:349 109:1438 110:776 111:931 112:410 113:604
114:645 115:897 116:894 117:709 118:898 119:1159
120:342 121:785 122:1629 123:1090 124:1307 125:1263
128:519 129:180 130:252 131:631 132:293 133:22
134:231 135:61 136:217 137:235 138:334 139:174
140:469 141:243 142:411 143:365 144:470 145:77
146:513 147:286 148:747 149:318 150:143 151:183
152:473 153:176 154:16 155:420 156:220 157:337
158:190 159:547 160:341 161:245 162:378 163:181
164:653 165:408 166:588 167:531 168:907 169:125
170:897 171:147 172:5 173:1725 174:611 175:428
176:553 177:941 178:1574 180:1263 181:103 182:1009
183:202 184:540 186:1950 187:1084 188:1350 189:1589
190:5899 192:5970 193:5436 194:4194 195:3221 196:1201
197:168 198:3631 199:4802 200:5836 201:1988 202:8428
203:8530 204:4276 205:2512 206:2719 207:2742 208:4031
209:3609 210:2713 211:1536 212:1944 213:1829 214:883
215:82 216:5070 217:1554 218:539 219:322 220:1223
221:551 222:302 223:336

End of report
_______________________________________________
bgp-stats mailing list
bgp-stats@lists.apnic.net
http://mailman.apnic.net/mailman/listinfo/bgp-stats
Posted by Admin at 4:07 PM

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)