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, May 30, 2012

[bgp-stats] Routing Table Report - London view

* BGP Routing Table Analysis Reports *
Routing Table Report 08:00 +10GMT Thu 31 May, 2012

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

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

BGP routing table entries examined: 405085
Prefixes after maximum aggregation: 172324
Deaggregation factor: 2.35
Unique aggregates announced to Internet: 200565
Total ASes present in the Internet Routing Table: 38602
Prefixes per ASN: 10.49
Origin-only ASes present in the Internet Routing Table: 33302
Origin ASes announcing only one prefix: 15692
Transit ASes present in the Internet Routing Table: 5300
Transit-only ASes present in the Internet Routing Table: 112
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: 1194
Unregistered ASNs in the Routing Table: 232
Number of 32-bit ASNs allocated by the RIRs: 2765
Number of 32-bit ASNs visible in the Routing Table: 0
Prefixes from 32-bit ASNs in the Routing Table: 6123
Special use prefixes present in the Routing Table: 8
Prefixes being announced from unallocated address space: 118
Number of addresses announced to Internet: 2579247360
Equivalent to 153 /8s, 188 /16s and 49 /24s
Percentage of available address space announced: 69.6
Percentage of allocated address space announced: 69.7
Percentage of available address space allocated: 99.9
Percentage of address space in use by end-sites: 92.8
Total number of prefixes smaller than registry allocations: 171133

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

Prefixes being announced by APNIC Region ASes: 94868
Total APNIC prefixes after maximum aggregation: 30957
APNIC Deaggregation factor: 3.06
Prefixes being announced from the APNIC address blocks: 92366
Unique aggregates announced from the APNIC address blocks: 40048
APNIC Region origin ASes present in the Internet Routing Table: 4654
APNIC Prefixes per ASN: 19.85
APNIC Region origin ASes announcing only one prefix: 1274
APNIC Region transit ASes present in the Internet Routing Table: 714
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: 645421312
Equivalent to 38 /8s, 120 /16s and 89 /24s
Percentage of available APNIC address space announced: 81.9

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: 150325
Total ARIN prefixes after maximum aggregation: 76465
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 120924
Unique aggregates announced from the ARIN address blocks: 51203
ARIN Region origin ASes present in the Internet Routing Table: 15082
ARIN Prefixes per ASN: 8.02
ARIN Region origin ASes announcing only one prefix: 5743
ARIN Region transit ASes present in the Internet Routing Table: 1520
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: 816627968
Equivalent to 48 /8s, 172 /16s and 193 /24s
Percentage of available ARIN address space announced: 65.1

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: 102755
Total RIPE prefixes after maximum aggregation: 54510
RIPE Deaggregation factor: 1.89
Prefixes being announced from the RIPE address blocks: 94842
Unique aggregates announced from the RIPE address blocks: 59338
RIPE Region origin ASes present in the Internet Routing Table: 16591
RIPE Prefixes per ASN: 5.72
RIPE Region origin ASes announcing only one prefix: 8068
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: 26
Number of RIPE region 32-bit ASNs visible in the Routing Table: 0
Number of RIPE addresses announced to Internet: 515046400
Equivalent to 30 /8s, 178 /16s and 252 /24s
Percentage of available RIPE address space announced: 83.0

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: 41051
Total LACNIC prefixes after maximum aggregation: 8138
LACNIC Deaggregation factor: 5.04
Prefixes being announced from the LACNIC address blocks: 41394
Unique aggregates announced from the LACNIC address blocks: 20594
LACNIC Region origin ASes present in the Internet Routing Table: 1584
LACNIC Prefixes per ASN: 26.13
LACNIC Region origin ASes announcing only one prefix: 442
LACNIC Region transit ASes present in the Internet Routing Table: 293
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: 101607424
Equivalent to 6 /8s, 14 /16s and 104 /24s
Percentage of available LACNIC address space announced: 67.3

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: 9108
Total AfriNIC prefixes after maximum aggregation: 2173
AfriNIC Deaggregation factor: 4.19
Prefixes being announced from the AfriNIC address blocks: 7179
Unique aggregates announced from the AfriNIC address blocks: 2194
AfriNIC Region origin ASes present in the Internet Routing Table: 542
AfriNIC Prefixes per ASN: 13.25
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: 31821568
Equivalent to 1 /8s, 229 /16s and 143 /24s
Percentage of available AfriNIC address space announced: 47.4

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 1982 11104 732 Korea Telecom (KIX)
17974 1837 530 80 PT Telekomunikasi Indonesia
7545 1664 301 87 TPG Internet Pty Ltd
4755 1553 384 153 TATA Communications formerly
9829 1298 1085 28 National Internet Backbone
9583 1161 87 499 Sify Limited
7552 1126 1062 11 Vietel Corporation
24560 1026 385 167 Bharti Airtel Ltd., Telemedia
9498 964 291 63 BHARTI Airtel Ltd.
4808 951 1938 283 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 3412 3807 194 BellSouth.net Inc.
7029 3377 1016 171 Windstream Communications Inc
18566 2093 382 181 Covad Communications Co.
1785 1908 680 130 PaeTec Communications, Inc.
20115 1645 1569 619 Charter Communications
22773 1616 2911 121 Cox Communications Inc.
4323 1565 1058 383 tw telecom holdings, inc.
30036 1414 262 752 Mediacom Communications Corp
7018 1234 10064 831 AT&T Services, Inc.
7011 1188 317 681 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 1600 544 16 Corbina telecom
2118 1302 97 14 EUnet/RELCOM Autonomous Syste
34984 699 188 172 BILISIM TELEKOM
12479 692 679 71 France Telecom Espana SA
31148 683 37 9 FreeNet ISP
6830 653 2215 424 UPC Broadband
20940 647 215 513 Akamai Technologies European
9116 540 326 31 Goldenlines main autonomous s
8551 505 364 61 Bezeq International
3320 489 8442 402 Deutsche Telekom AG

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 1920 340 201 Types of queries are: POCs, o
28573 1896 1180 57 Types of queries are: POCs, o
6503 1524 418 67 Axtel, S.A.B. de C.V.
7303 1432 900 189 Telecom Argentina S.A.
8151 1337 3047 328 Uninet S.A. de C.V.
26615 902 760 32 Tim Celular S.A.
27947 667 73 94 Telconet S.A
11172 646 107 74 Alestra, S. de R.L. de C.V.
3816 588 247 89 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 1151 958 13 TEDATA
24863 843 274 32 LINKdotNET AS number
6713 497 649 18 Itissalat Al-MAGHRIB
24835 321 80 8 RAYA Telecom - Egypt
3741 262 905 223 The Internet Solution
33776 210 12 21 Starcomms Nigeria Limited
12258 197 28 62 Vodacom Internet Company
15706 165 32 6 Sudatel Internet Exchange Aut
16637 162 666 87 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 3412 3807 194 BellSouth.net Inc.
7029 3377 1016 171 Windstream Communications Inc
18566 2093 382 181 Covad Communications Co.
4766 1982 11104 732 Korea Telecom (KIX)
10620 1920 340 201 Types of queries are: POCs, o
1785 1908 680 130 PaeTec Communications, Inc.
28573 1896 1180 57 Types of queries are: POCs, o
17974 1837 530 80 PT Telekomunikasi Indonesia
7545 1664 301 87 TPG Internet Pty Ltd
20115 1645 1569 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 3377 3206 Windstream Communications Inc
18566 2093 1912 Covad Communications Co.
28573 1896 1839 Types of queries are: POCs, o
1785 1908 1778 PaeTec Communications, Inc.
17974 1837 1757 PT Telekomunikasi Indonesia
10620 1920 1719 Types of queries are: POCs, o
8402 1600 1584 Corbina telecom
7545 1664 1577 TPG Internet Pty Ltd
22773 1616 1495 Cox Communications Inc.
6503 1524 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.
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
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
5.45.176.0/21 29141 Bradler & Krantz, Bochum, Ger
5.53.32.0/19 30783 Rased Maral Ava Jonoob JSC
5.53.120.0/21 51012 LLC "UralPromService"
5.56.16.0/21 33891 Core-Backbone GmbH
5.56.144.0/20 31027 nianet is a Danish carrier an
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

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 /9:13 /10:30 /11:81 /12:236
/13:460 /14:831 /15:1501 /16:12245 /17:6276 /18:10520
/19:20684 /20:29330 /21:30589 /22:40120 /23:38104 /24:213470
/25:11 /26:21 /27:20 /28:153 /29:151 /30:81
/31:0 /32:138

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

ASN No of nets Total ann. Description
7029 3018 3377 Windstream Communications Inc
6389 2130 3412 BellSouth.net Inc.
18566 2042 2093 Covad Communications Co.
10620 1734 1920 Types of queries are: POCs, o
8402 1578 1600 Corbina telecom
30036 1355 1414 Mediacom Communications Corp
6503 1278 1524 Axtel, S.A.B. de C.V.
11492 1150 1187 CABLE ONE, INC.
7011 1073 1188 Frontier Communications of Am
1785 1066 1908 PaeTec Communications, Inc.

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

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

1:552 2:688 4:13 5:38 6:3 8:420
12:1981 13:1 14:607 15:12 16:3 17:5
20:23 23:172 24:1772 27:1313 31:1001 32:51
33:2 34:2 36:8 37:635 38:808 40:122
41:3052 42:138 44:3 46:1431 47:3 49:448
50:550 52:13 54:12 55:8 56:3 57:27
58:913 59:490 60:248 61:1113 62:993 63:2001
64:4237 65:2243 66:4452 67:1995 68:1155 69:3168
70:932 71:493 72:1822 74:2598 75:494 76:329
77:944 78:958 79:491 80:1220 81:939 82:668
83:544 84:495 85:1185 86:445 87:907 88:336
89:1717 90:291 91:4882 92:542 93:1341 94:1562
95:1153 96:357 97:313 98:865 99:35 100:7
101:204 103:1085 106:103 107:185 108:294 109:1339
110:740 111:920 112:404 113:589 114:627 115:834
116:915 117:707 118:914 119:1202 120:347 121:679
122:1627 123:1102 124:1328 125:1255 128:515 129:189
130:240 131:628 132:283 133:22 134:238 135:62
136:213 137:237 138:359 139:183 140:470 141:250
142:396 143:568 144:533 145:72 146:501 147:284
148:751 149:305 150:186 151:175 152:466 153:172
154:12 155:419 156:219 157:336 158:184 159:483
160:342 161:242 162:342 163:179 164:597 165:403
166:592 167:469 168:859 169:125 170:873 171:132
172:2 173:1757 174:583 175:424 176:547 177:809
178:1397 180:1215 181:88 182:1020 183:227 184:506
185:1 186:2309 187:1099 188:1297 189:1802 190:5537
192:5970 193:5570 194:4525 195:3412 196:1190 197:149
198:3616 199:4669 200:5790 201:1934 202:8336 203:8492
204:4264 205:2520 206:2684 207:2734 208:4055 209:3602
210:2691 211:1518 212:2030 213:1934 214:866 215:95
216:5094 217:1552 218:537 219:308 220:1234 221:548
222:286 223:346

End of report
_______________________________________________
bgp-stats mailing list
bgp-stats@lists.apnic.net
http://mailman.apnic.net/mailman/listinfo/bgp-stats
Posted by Admin at 3:33 PM

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)