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, August 2, 2012

[bgp-stats] Routing Table Report - London view

* BGP Routing Table Analysis Reports *
Routing Table Report 08:00 +10GMT Fri 03 Aug, 2012

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

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

BGP routing table entries examined: 412796
Prefixes after maximum aggregation: 174609
Deaggregation factor: 2.36
Unique aggregates announced to Internet: 204790
Total ASes present in the Internet Routing Table: 38837
Prefixes per ASN: 10.63
Origin-only ASes present in the Internet Routing Table: 33429
Origin ASes announcing only one prefix: 15717
Transit ASes present in the Internet Routing Table: 5408
Transit-only ASes present in the Internet Routing Table: 114
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 24
Max AS path prepend of ASN ( 36992) 22
Prefixes from unregistered ASNs in the Routing Table: 1064
Unregistered ASNs in the Routing Table: 192
Number of 32-bit ASNs allocated by the RIRs: 3061
Number of 32-bit ASNs visible in the Routing Table: 0
Prefixes from 32-bit ASNs in the Routing Table: 6859
Special use prefixes present in the Routing Table: 6
Prefixes being announced from unallocated address space: 171
Number of addresses announced to Internet: 2592450304
Equivalent to 154 /8s, 133 /16s and 167 /24s
Percentage of available address space announced: 69.9
Percentage of allocated address space announced: 70.0
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: 143044

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

Prefixes being announced by APNIC Region ASes: 96318
Total APNIC prefixes after maximum aggregation: 31206
APNIC Deaggregation factor: 3.09
Prefixes being announced from the APNIC address blocks: 97415
Unique aggregates announced from the APNIC address blocks: 42101
APNIC Region origin ASes present in the Internet Routing Table: 4678
APNIC Prefixes per ASN: 20.82
APNIC Region origin ASes announcing only one prefix: 1261
APNIC Region transit ASes present in the Internet Routing Table: 731
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: 704234752
Equivalent to 41 /8s, 249 /16s and 197 /24s
Percentage of available APNIC address space announced: 82.3

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: 152138
Total ARIN prefixes after maximum aggregation: 77273
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 153131
Unique aggregates announced from the ARIN address blocks: 68844
ARIN Region origin ASes present in the Internet Routing Table: 15144
ARIN Prefixes per ASN: 10.11
ARIN Region origin ASes announcing only one prefix: 5751
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: 18
Number of ARIN region 32-bit ASNs visible in the Routing Table: 0
Number of ARIN addresses announced to Internet: 1073012992
Equivalent to 63 /8s, 244 /16s and 225 /24s
Percentage of available ARIN address space announced: 56.8

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: 104989
Total RIPE prefixes after maximum aggregation: 55624
RIPE Deaggregation factor: 1.89
Prefixes being announced from the RIPE address blocks: 107169
Unique aggregates announced from the RIPE address blocks: 68292
RIPE Region origin ASes present in the Internet Routing Table: 16710
RIPE Prefixes per ASN: 6.41
RIPE Region origin ASes announcing only one prefix: 8112
RIPE Region transit ASes present in the Internet Routing Table: 2653
Average RIPE Region AS path length visible: 3.5
Max RIPE Region AS path length visible: 22
Number of RIPE region 32-bit ASNs visible in the Routing Table: 0
Number of RIPE addresses announced to Internet: 638238464
Equivalent to 38 /8s, 10 /16s and 191 /24s
Percentage of available RIPE address space announced: 92.8

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: 42243
Total LACNIC prefixes after maximum aggregation: 8271
LACNIC Deaggregation factor: 5.11
Prefixes being announced from the LACNIC address blocks: 44936
Unique aggregates announced from the LACNIC address blocks: 22002
LACNIC Region origin ASes present in the Internet Routing Table: 1603
LACNIC Prefixes per ASN: 28.03
LACNIC Region origin ASes announcing only one prefix: 425
LACNIC Region transit ASes present in the Internet Routing Table: 310
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: 112826880
Equivalent to 6 /8s, 185 /16s and 154 /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,
191/8, 200/8, 201/8,

AfriNIC Region Analysis Summary
-------------------------------

Prefixes being announced by AfriNIC Region ASes: 9518
Total AfriNIC prefixes after maximum aggregation: 2179
AfriNIC Deaggregation factor: 4.37
Prefixes being announced from the AfriNIC address blocks: 9973
Unique aggregates announced from the AfriNIC address blocks: 3400
AfriNIC Region origin ASes present in the Internet Routing Table: 554
AfriNIC Prefixes per ASN: 18.00
AfriNIC Region origin ASes announcing only one prefix: 168
AfriNIC Region transit ASes present in the Internet Routing Table: 122
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: 41518592
Equivalent to 2 /8s, 121 /16s and 134 /24s
Percentage of available AfriNIC address space announced: 41.2

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 2286 702 54 PT Telekomunikasi Indonesia
4766 2024 11112 784 Korea Telecom (KIX)
7545 1692 301 87 TPG Internet Pty Ltd
4755 1581 385 154 TATA Communications formerly
9829 1309 1084 31 National Internet Backbone
9583 1160 87 508 Sify Limited
7552 1110 1062 11 Vietel Corporation
24560 1037 385 165 Bharti Airtel Ltd., Telemedia
9498 992 294 73 BHARTI Airtel Ltd.
4808 968 1943 292 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
7029 3440 986 155 Windstream Communications Inc
6389 3379 3773 195 BellSouth.net Inc.
18566 2089 382 181 Covad Communications Co.
1785 1943 681 131 PaeTec Communications, Inc.
22773 1699 2914 125 Cox Communications Inc.
20115 1646 1572 611 Charter Communications
4323 1572 1043 383 tw telecom holdings, inc.
30036 1409 276 790 Mediacom Communications Corp
7018 1253 10072 823 AT&T Services, Inc.
7011 1191 316 697 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 1487 544 16 Corbina telecom
12479 823 761 88 France Telecom Espana SA
34984 735 189 177 BILISIM TELEKOM
6830 715 2310 446 UPC Broadband
20940 705 234 563 Akamai Technologies European
31148 702 37 9 FreeNet ISP
2118 664 97 14 EUnet/RELCOM Autonomous Syste
13188 647 100 9 Ukraine
8551 601 364 61 Bezeq International
9116 541 326 32 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
10620 2036 350 210 Types of queries are: POCs, o
28573 2022 1228 58 Types of queries are: POCs, o
6503 1520 419 69 Axtel, S.A.B. de C.V.
7303 1460 936 198 Telecom Argentina S.A.
8151 1334 3051 341 Uninet S.A. de C.V.
6458 881 81 15 Telgua
27947 695 75 90 Telconet S.A
11172 645 107 75 Alestra, S. de R.L. de C.V.
3816 606 256 87 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 964 958 13 TEDATA
24863 864 274 32 LINKdotNET AS number
6713 509 650 19 Itissalat Al-MAGHRIB
36998 483 48 3 MOBITEL
24835 286 80 8 RAYA Telecom - Egypt
3741 263 905 224 The Internet Solution
33776 228 12 19 Starcomms Nigeria Limited
12258 197 28 62 Vodacom Internet Company
29975 191 667 21 Vodacom
15706 177 32 6 Sudatel Internet Exchange Aut

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 3440 986 155 Windstream Communications Inc
6389 3379 3773 195 BellSouth.net Inc.
17974 2286 702 54 PT Telekomunikasi Indonesia
18566 2089 382 181 Covad Communications Co.
10620 2036 350 210 Types of queries are: POCs, o
4766 2024 11112 784 Korea Telecom (KIX)
28573 2022 1228 58 Types of queries are: POCs, o
1785 1943 681 131 PaeTec Communications, Inc.
22773 1699 2914 125 Cox Communications Inc.
7545 1692 301 87 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 3379 3184 BellSouth.net Inc.
17974 2286 2232 PT Telekomunikasi Indonesia
28573 2022 1964 Types of queries are: POCs, o
18566 2089 1908 Covad Communications Co.
10620 2036 1826 Types of queries are: POCs, o
1785 1943 1812 PaeTec Communications, Inc.
7545 1692 1605 TPG Internet Pty Ltd
22773 1699 1574 Cox Communications Inc.
8402 1487 1471 Corbina telecom
6503 1520 1451 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
59407 UNALLOCATED 5.134.16.0/21 51167 Giga-Hosting GmbH
59457 UNALLOCATED 5.149.64.0/24 35567 DASTO semtel d.o.o.
59457 UNALLOCATED 5.149.65.0/24 35567 DASTO semtel d.o.o.
59457 UNALLOCATED 5.149.67.0/24 35567 DASTO semtel d.o.o.
59457 UNALLOCATED 5.149.68.0/24 35567 DASTO semtel d.o.o.
59457 UNALLOCATED 5.149.71.0/24 35567 DASTO semtel d.o.o.
59458 UNALLOCATED 5.149.96.0/21 50597 ScopeSky Communicati
59458 UNALLOCATED 5.149.104.0/22 50597 ScopeSky Communicati
59473 UNALLOCATED 5.149.152.0/22 44843 AmsterdamTelecom Ltd
59473 UNALLOCATED 5.149.156.0/23 44843 AmsterdamTelecom Ltd

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
5.175.80.0/21 47886 Equinix Netherlands IP Platfo
5.175.128.0/17 12586 +----------------------------
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
/13:472 /14:846 /15:1527 /16:12296 /17:6380 /18:10640
/19:20812 /20:29873 /21:31478 /22:41068 /23:39271 /24:217179
/25:11 /26:22 /27:19 /28:150 /29:151 /30:84
/31:0 /32:138

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

ASN No of nets Total ann. Description
7029 2799 3440 Windstream Communications Inc
18566 2039 2089 Covad Communications Co.
6389 1864 3379 BellSouth.net Inc.
30036 1344 1409 Mediacom Communications Corp
8402 1187 1487 Corbina telecom
11492 1154 1191 CABLE ONE, INC.
22773 1123 1699 Cox Communications Inc.
1785 1051 1943 PaeTec Communications, Inc.
6503 1047 1520 Axtel, S.A.B. de C.V.
7011 930 1191 Frontier Communications of Am

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

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

1:488 2:642 3:1 4:13 5:297 6:3
8:437 12:1968 13:1 14:625 15:11 16:3
17:6 20:24 23:204 24:1796 27:1315 31:1044
32:51 33:2 34:2 36:8 37:683 38:814
39:1 40:134 41:2824 42:158 44:3 46:1549
47:2 49:428 50:569 52:13 54:14 55:7
56:1 57:38 58:919 59:506 60:232 61:1174
62:936 63:2022 64:4235 65:2250 66:4522 67:2035
68:1154 69:3198 70:986 71:520 72:1869 74:2601
75:489 76:333 77:942 78:947 79:494 80:1236
81:952 82:647 83:541 84:512 85:1147 86:474
87:935 88:354 89:1792 90:302 91:5071 92:587
93:1311 94:1570 95:1273 96:400 97:318 98:901
99:36 100:22 101:251 103:1321 105:464 106:112
107:189 108:394 109:1492 110:789 111:941 112:426
113:660 114:666 115:848 116:896 117:722 118:944
119:1177 120:350 121:681 122:1636 123:1159 124:1307
125:1263 128:519 129:177 130:256 131:633 132:292
133:22 134:234 135:61 136:214 137:237 138:342
139:181 140:470 141:257 142:427 143:370 144:494
145:78 146:503 147:303 148:750 149:319 150:145
151:186 152:471 153:176 154:18 155:405 156:219
157:336 158:191 159:551 160:347 161:358 162:383
163:179 164:665 165:405 166:578 167:535 168:958
169:125 170:899 171:147 172:5 173:1739 174:630
175:426 176:565 177:991 178:1666 180:1324 181:114
182:1017 183:231 184:570 186:2057 187:1102 188:1375
189:1580 190:6134 192:5977 193:5447 194:4187 195:3240
196:1234 197:201 198:3646 199:4889 200:5908 201:1977
202:8463 203:8597 204:4313 205:2520 206:2700 207:2763
208:4045 209:3614 210:2691 211:1542 212:2009 213:1807
214:875 215:86 216:5067 217:1556 218:547 219:298
220:1236 221:550 222:301 223:339

End of report
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