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, November 15, 2012

[bgp-stats] Routing Table Report - London view

* BGP Routing Table Analysis Reports *
Routing Table Report 08:00 +10GMT Fri 16 Nov, 2012

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

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

BGP routing table entries examined: 425172
Prefixes after maximum aggregation: 177912
Deaggregation factor: 2.39
Unique aggregates announced to Internet: 212213
Total ASes present in the Internet Routing Table: 39329
Prefixes per ASN: 10.81
Origin-only ASes present in the Internet Routing Table: 33838
Origin ASes announcing only one prefix: 15839
Transit ASes present in the Internet Routing Table: 5491
Transit-only ASes present in the Internet Routing Table: 134
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 40
Max AS path prepend of ASN ( 22394) 37
Prefixes from unregistered ASNs in the Routing Table: 1652
Unregistered ASNs in the Routing Table: 397
Number of 32-bit ASNs allocated by the RIRs: 3484
Number of 32-bit ASNs visible in the Routing Table: 0
Prefixes from 32-bit ASNs in the Routing Table: 8395
Special use prefixes present in the Routing Table: 20
Prefixes being announced from unallocated address space: 157
Number of addresses announced to Internet: 2632577280
Equivalent to 156 /8s, 233 /16s and 241 /24s
Percentage of available address space announced: 71.1
Percentage of allocated address space announced: 71.1
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 93.9
Total number of prefixes smaller than registry allocations: 147880

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

Prefixes being announced by APNIC Region ASes: 98868
Total APNIC prefixes after maximum aggregation: 31201
APNIC Deaggregation factor: 3.17
Prefixes being announced from the APNIC address blocks: 100309
Unique aggregates announced from the APNIC address blocks: 43012
APNIC Region origin ASes present in the Internet Routing Table: 4743
APNIC Prefixes per ASN: 21.15
APNIC Region origin ASes announcing only one prefix: 1270
APNIC Region transit ASes present in the Internet Routing Table: 750
Average APNIC Region AS path length visible: 4.1
Max APNIC Region AS path length visible: 18
Number of APNIC region 32-bit ASNs visible in the Routing Table: 0
Number of APNIC addresses announced to Internet: 711708160
Equivalent to 42 /8s, 107 /16s and 206 /24s
Percentage of available APNIC address space announced: 83.2

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: 153921
Total ARIN prefixes after maximum aggregation: 77982
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 154691
Unique aggregates announced from the ARIN address blocks: 69902
ARIN Region origin ASes present in the Internet Routing Table: 15221
ARIN Prefixes per ASN: 10.16
ARIN Region origin ASes announcing only one prefix: 5759
ARIN Region transit ASes present in the Internet Routing Table: 1523
Average ARIN Region AS path length visible: 3.3
Max ARIN Region AS path length visible: 40
Number of ARIN region 32-bit ASNs visible in the Routing Table: 0
Number of ARIN addresses announced to Internet: 1087141376
Equivalent to 64 /8s, 204 /16s and 118 /24s
Percentage of available ARIN address space announced: 57.5

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, 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: 110136
Total RIPE prefixes after maximum aggregation: 57761
RIPE Deaggregation factor: 1.91
Prefixes being announced from the RIPE address blocks: 112959
Unique aggregates announced from the RIPE address blocks: 72742
RIPE Region origin ASes present in the Internet Routing Table: 16936
RIPE Prefixes per ASN: 6.67
RIPE Region origin ASes announcing only one prefix: 8143
RIPE Region transit ASes present in the Internet Routing Table: 2709
Average RIPE Region AS path length visible: 3.5
Max RIPE Region AS path length visible: 33
Number of RIPE region 32-bit ASNs visible in the Routing Table: 0
Number of RIPE addresses announced to Internet: 648680448
Equivalent to 38 /8s, 170 /16s and 20 /24s
Percentage of available RIPE address space announced: 94.3

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: 43519
Total LACNIC prefixes after maximum aggregation: 8636
LACNIC Deaggregation factor: 5.04
Prefixes being announced from the LACNIC address blocks: 46963
Unique aggregates announced from the LACNIC address blocks: 22805
LACNIC Region origin ASes present in the Internet Routing Table: 1698
LACNIC Prefixes per ASN: 27.66
LACNIC Region origin ASes announcing only one prefix: 494
LACNIC Region transit ASes present in the Internet Routing Table: 312
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 19
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 0
Number of LACNIC addresses announced to Internet: 119379456
Equivalent to 7 /8s, 29 /16s and 150 /24s
Percentage of available LACNIC address space announced: 71.2

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: 9580
Total AfriNIC prefixes after maximum aggregation: 2279
AfriNIC Deaggregation factor: 4.20
Prefixes being announced from the AfriNIC address blocks: 10092
Unique aggregates announced from the AfriNIC address blocks: 3613
AfriNIC Region origin ASes present in the Internet Routing Table: 565
AfriNIC Prefixes per ASN: 17.86
AfriNIC Region origin ASes announcing only one prefix: 173
AfriNIC Region transit ASes present in the Internet Routing Table: 121
Average AfriNIC Region AS path length visible: 3.3
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: 43080192
Equivalent to 2 /8s, 145 /16s and 90 /24s
Percentage of available AfriNIC address space announced: 42.8

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 2421 826 46 PT Telekomunikasi Indonesia
4766 2101 11550 602 Korea Telecom (KIX)
7545 1784 301 89 TPG Internet Pty Ltd
4755 1597 375 159 TATA Communications formerly
9829 1406 1155 42 National Internet Backbone
9583 1207 91 534 Sify Limited
7552 1124 1062 11 Vietel Corporation
24560 1039 385 165 Bharti Airtel Ltd., Telemedia
9498 1021 310 74 BHARTI Airtel Ltd.
18101 1016 135 170 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
7029 3201 991 190 Windstream Communications Inc
6389 3155 3721 156 BellSouth.net Inc.
18566 2072 381 182 Covad Communications Co.
22773 1942 2931 129 Cox Communications Inc.
1785 1928 678 124 PaeTec Communications, Inc.
20115 1680 1601 634 Charter Communications
4323 1586 1169 393 tw telecom holdings, inc.
30036 1354 281 764 Mediacom Communications Corp
7018 1281 10292 857 AT&T Services, Inc.
7011 1222 334 692 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 1658 544 16 Corbina telecom
12479 854 777 64 France Telecom Espana SA
34984 840 210 208 BILISIM TELEKOM
31148 731 37 9 FreeNet ISP
13188 724 93 132 Ukraine
6830 713 2313 436 UPC Broadband
20940 703 230 551 Akamai Technologies European
2118 691 97 14 EUnet/RELCOM Autonomous Syste
8551 619 364 61 Bezeq International
58113 602 67 365 LIR DATACENTER TELECOM SRL

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 2251 384 208 Types of queries are: POCs, o
28573 2170 1285 65 Types of queries are: POCs, o
7303 1668 1138 201 Telecom Argentina S.A.
6503 1516 435 69 Axtel, S.A.B. de C.V.
8151 1459 3046 350 Uninet S.A. de C.V.
27947 725 78 88 Telconet S.A
3816 654 309 68 Types of queries are: POCs, o
11172 592 101 68 Alestra, S. de R.L. de C.V.
18881 587 716 18 Global Village Telecom
22047 579 326 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
24863 865 275 36 LINKdotNET AS number
36998 772 48 3 MOBITEL
8452 533 958 13 TEDATA
6713 516 650 19 Itissalat Al-MAGHRIB
24835 289 80 8 RAYA Telecom - Egypt
3741 267 906 225 The Internet Solution
12258 194 28 66 Vodacom Internet Company
15399 194 29 5 Wananchi Online Limited
15706 191 32 6 Sudatel Internet Exchange Aut
29975 191 667 21 Vodacom

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
7029 3201 991 190 Windstream Communications Inc
6389 3155 3721 156 BellSouth.net Inc.
17974 2421 826 46 PT Telekomunikasi Indonesia
10620 2251 384 208 Types of queries are: POCs, o
28573 2170 1285 65 Types of queries are: POCs, o
4766 2101 11550 602 Korea Telecom (KIX)
18566 2072 381 182 Covad Communications Co.
22773 1942 2931 129 Cox Communications Inc.
1785 1928 678 124 PaeTec Communications, Inc.
7545 1784 301 89 TPG Internet Pty Ltd

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

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

ASN No of nets Net Savings Description
6389 3155 2999 BellSouth.net Inc.
17974 2421 2375 PT Telekomunikasi Indonesia
28573 2170 2105 Types of queries are: POCs, o
10620 2251 2043 Types of queries are: POCs, o
18566 2072 1890 Covad Communications Co.
22773 1942 1813 Cox Communications Inc.
1785 1928 1804 PaeTec Communications, Inc.
7545 1784 1695 TPG Internet Pty Ltd
8402 1658 1642 Corbina telecom
4766 2101 1499 Korea Telecom (KIX)

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

List of Unregistered Origin ASNs (Global)
-----------------------------------------

Bad AS Designation Network Transit AS Description
59505 UNALLOCATED 5.2.65.0/24 50673 Serverius AS
59505 UNALLOCATED 5.2.66.0/24 50673 Serverius AS
59530 UNALLOCATED 5.8.182.0/24 31261 GARS Telecom
61408 UNALLOCATED 5.56.0.0/21 174 Cogent Communication
59414 UNALLOCATED 5.102.144.0/21 15576 NTS workspace AG
59395 UNALLOCATED 5.133.16.0/21 8468 ENTANET Internationa
59407 UNALLOCATED 5.134.16.0/21 51167 Giga-Hosting GmbH
59521 UNALLOCATED 5.134.192.0/21 29518 Bredband2 AB
59441 UNALLOCATED 5.144.128.0/21 50810 Mobin Net Communicat
59581 UNALLOCATED 5.149.8.0/21 25577 C4L main AS

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
128.0.24.0/21 41794 Sibirskie Seti Ltd.
128.0.64.0/22 49466 Declic Telecom SAS
128.0.68.0/22 49466 Declic Telecom SAS
128.0.72.0/21 23456 32-bit ASN transition
128.0.80.0/20 52041 Timer LTD
128.0.104.0/23 51848 FOP Gabidullina Ludmila Nikol
128.0.106.0/24 23456 32-bit ASN transition
128.0.128.0/20 29285 AMT closed joint-stock compan
128.0.144.0/22 59675 >>UNKNOWN<<

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

Advertised Unallocated Addresses
--------------------------------

Network Origin AS Description
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
41.220.94.0/23 42235 Intra Data Communication

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 /8:19 /9:13 /10:30 /11:88 /12:243
/13:478 /14:854 /15:1561 /16:12389 /17:6568 /18:10819
/19:21312 /20:30689 /21:32641 /22:42839 /23:40053 /24:223979
/25:9 /26:13 /27:11 /28:145 /29:187 /30:91
/31:0 /32:141

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

ASN No of nets Total ann. Description
7029 2642 3201 Windstream Communications Inc
18566 2022 2072 Covad Communications Co.
6389 1779 3155 BellSouth.net Inc.
8402 1373 1658 Corbina telecom
22773 1272 1942 Cox Communications Inc.
30036 1270 1354 Mediacom Communications Corp
11492 1145 1180 CABLE ONE, INC.
6503 1050 1516 Axtel, S.A.B. de C.V.
1785 1016 1928 PaeTec Communications, Inc.
7011 957 1222 Frontier Communications of Am

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

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

1:608 2:713 3:1 4:13 5:674 6:3
8:481 12:1958 13:3 14:678 15:11 16:3
17:6 20:27 23:210 24:1787 27:1397 31:1299
32:49 33:2 34:2 36:8 37:947 38:835
39:2 40:139 41:2663 42:179 44:3 46:1644
47:2 49:504 50:598 52:12 54:27 55:3
56:1 57:31 58:981 59:538 60:231 61:1273
62:941 63:2013 64:4332 65:2195 66:4505 67:2101
68:1162 69:3223 70:929 71:555 72:1892 74:2615
75:483 76:293 77:983 78:1005 79:505 80:1228
81:985 82:622 83:541 84:510 85:1151 86:516
87:951 88:349 89:1747 90:305 91:5345 92:588
93:1427 94:1792 95:1405 96:412 97:323 98:961
99:37 100:30 101:287 103:1768 105:521 106:119
107:203 108:462 109:1639 110:809 111:975 112:431
113:716 114:670 115:866 116:866 117:749 118:959
119:1207 120:355 121:671 122:1693 123:1164 124:1298
125:1285 128:527 129:189 130:286 131:662 132:310
133:143 134:245 135:62 136:217 137:234 138:339
139:172 140:476 141:291 142:476 143:370 144:485
145:83 146:520 147:260 148:710 149:326 150:145
151:215 152:447 153:183 154:20 155:431 156:226
157:324 158:283 159:588 160:337 161:390 162:368
163:180 164:577 165:443 166:480 167:563 168:970
169:128 170:921 171:154 172:7 173:1693 174:633
175:452 176:721 177:1430 178:1657 180:1379 181:170
182:1098 183:299 184:630 185:64 186:2083 187:1410
188:1745 189:1612 190:5773 192:6003 193:5414 194:4288
195:3674 196:1243 197:266 198:3885 199:5066 200:5874
201:1962 202:8525 203:8603 204:4357 205:2522 206:2675
207:2728 208:4063 209:3606 210:2749 211:1516 212:2167
213:1868 214:874 215:74 216:5187 217:1583 218:564
219:294 220:1251 221:531 222:337 223:402

End of report
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