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.

Monday, November 4, 2013

[bgp-stats] Routing Table Report - London view

* BGP Routing Table Analysis Reports *
Routing Table Report 08:00 +10GMT Tue 05 Nov, 2013

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

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

BGP routing table entries examined: 465843
Prefixes after maximum aggregation: 187752
Deaggregation factor: 2.48
Unique aggregates announced to Internet: 233405
Total ASes present in the Internet Routing Table: 45246
Prefixes per ASN: 10.30
Origin-only ASes present in the Internet Routing Table: 35312
Origin ASes announcing only one prefix: 16289
Transit ASes present in the Internet Routing Table: 5831
Transit-only ASes present in the Internet Routing Table: 143
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 28
Max AS path prepend of ASN ( 59482) 25
Prefixes from unregistered ASNs in the Routing Table: 761
Unregistered ASNs in the Routing Table: 216
Number of 32-bit ASNs allocated by the RIRs: 5301
Number of 32-bit ASNs visible in the Routing Table: 4103
Prefixes from 32-bit ASNs in the Routing Table: 12694
Special use prefixes present in the Routing Table: 11
Prefixes being announced from unallocated address space: 944
Number of addresses announced to Internet: 2674557184
Equivalent to 159 /8s, 106 /16s and 129 /24s
Percentage of available address space announced: 72.2
Percentage of allocated address space announced: 72.2
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 95.1
Total number of prefixes smaller than registry allocations: 162144

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

Prefixes being announced by APNIC Region ASes: 107417
Total APNIC prefixes after maximum aggregation: 33129
APNIC Deaggregation factor: 3.24
Prefixes being announced from the APNIC address blocks: 110221
Unique aggregates announced from the APNIC address blocks: 47054
APNIC Region origin ASes present in the Internet Routing Table: 4846
APNIC Prefixes per ASN: 22.74
APNIC Region origin ASes announcing only one prefix: 1232
APNIC Region transit ASes present in the Internet Routing Table: 813
Average APNIC Region AS path length visible: 3.9
Max APNIC Region AS path length visible: 28
Number of APNIC region 32-bit ASNs visible in the Routing Table: 730
Number of APNIC addresses announced to Internet: 728827904
Equivalent to 43 /8s, 113 /16s and 8 /24s
Percentage of available APNIC address space announced: 85.2

APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319,
58368-59391, 63488-63999, 131072-133631
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: 161328
Total ARIN prefixes after maximum aggregation: 81067
ARIN Deaggregation factor: 1.99
Prefixes being announced from the ARIN address blocks: 162315
Unique aggregates announced from the ARIN address blocks: 75848
ARIN Region origin ASes present in the Internet Routing Table: 15867
ARIN Prefixes per ASN: 10.23
ARIN Region origin ASes announcing only one prefix: 6011
ARIN Region transit ASes present in the Internet Routing Table: 1620
Average ARIN Region AS path length visible: 3.3
Max ARIN Region AS path length visible: 22
Number of ARIN region 32-bit ASNs visible in the Routing Table: 33
Number of ARIN addresses announced to Internet: 1073121536
Equivalent to 63 /8s, 246 /16s and 137 /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, 62464-63487, 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: 119340
Total RIPE prefixes after maximum aggregation: 61073
RIPE Deaggregation factor: 1.95
Prefixes being announced from the RIPE address blocks: 122929
Unique aggregates announced from the RIPE address blocks: 78890
RIPE Region origin ASes present in the Internet Routing Table: 17503
RIPE Prefixes per ASN: 7.02
RIPE Region origin ASes announcing only one prefix: 8302
RIPE Region transit ASes present in the Internet Routing Table: 2814
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: 2454
Number of RIPE addresses announced to Internet: 656576000
Equivalent to 39 /8s, 34 /16s and 142 /24s
Percentage of available RIPE address space announced: 95.5

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, 61952-62463, 196608-200191
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: 52083
Total LACNIC prefixes after maximum aggregation: 9784
LACNIC Deaggregation factor: 5.32
Prefixes being announced from the LACNIC address blocks: 57114
Unique aggregates announced from the LACNIC address blocks: 26847
LACNIC Region origin ASes present in the Internet Routing Table: 2024
LACNIC Prefixes per ASN: 28.22
LACNIC Region origin ASes announcing only one prefix: 553
LACNIC Region transit ASes present in the Internet Routing Table: 372
Average LACNIC Region AS path length visible: 4.1
Max LACNIC Region AS path length visible: 20
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 880
Number of LACNIC addresses announced to Internet: 142209792
Equivalent to 8 /8s, 121 /16s and 243 /24s
Percentage of available LACNIC address space announced: 84.8

LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
61440-61951, 262144-263679 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: 11675
Total AfriNIC prefixes after maximum aggregation: 2568
AfriNIC Deaggregation factor: 4.55
Prefixes being announced from the AfriNIC address blocks: 12318
Unique aggregates announced from the AfriNIC address blocks: 4002
AfriNIC Region origin ASes present in the Internet Routing Table: 670
AfriNIC Prefixes per ASN: 18.39
AfriNIC Region origin ASes announcing only one prefix: 191
AfriNIC Region transit ASes present in the Internet Routing Table: 132
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: 6
Number of AfriNIC addresses announced to Internet: 48078336
Equivalent to 2 /8s, 221 /16s and 158 /24s
Percentage of available AfriNIC address space announced: 47.8

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 2711 903 89 PT TELEKOMUNIKASI INDONESIA
4766 2139 11550 641 Korea Telecom (KIX)
7545 2091 319 110 TPG Internet Pty Ltd
4755 1801 401 184 TATA Communications formerly
9829 1547 1242 48 BSNL National Internet Backbo
9583 1243 94 512 Sify Limited
9498 1195 310 78 BHARTI Airtel Ltd.
7552 1155 1080 13 Vietel Corporation
24560 1093 380 166 Bharti Airtel Ltd., Telemedia
4808 1074 2023 316 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 3056 3688 56 BellSouth.net Inc.
22773 2190 2939 139 Cox Communications, Inc.
18566 2055 379 178 MegaPath Corporation
1785 2036 684 130 PaeTec Communications, Inc.
20115 1681 1654 607 Charter Communications
4323 1634 1118 422 Time Warner Telecom
701 1504 11145 782 MCI Communications Services,
30036 1388 313 578 Mediacom Communications Corp
7018 1344 17796 880 AT&T WorldNet Services
6983 1293 755 578 ITC^Deltacom

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 1786 544 17 OJSC "Vimpelcom"
34984 1364 244 224 TELLCOM ILETISIM HIZMETLERI A
20940 1128 414 853 Akamai Technologies European
31148 1005 44 18 FreeNet ISP
13188 887 99 49 TOV "Bank-Inform"
6849 861 356 30 JSC UKRTELECOM,
6830 774 2328 426 UPC Distribution Services
8551 774 370 41 Bezeq International
12479 675 798 55 Uni2 Autonomous System
9116 555 327 36 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 3434 1784 85 NET Servicos de Comunicao S.A
10620 2642 428 237 TVCABLE BOGOTA
7303 1724 1144 233 Telecom Argentina Stet-France
18881 1538 844 20 Global Village Telecom
8151 1339 2846 408 UniNet S.A. de C.V.
11830 866 364 15 Instituto Costarricense de El
27947 820 94 93 Telconet S.A
6147 791 373 27 Telefonica Del Peru
6503 785 434 63 AVANTEL, S.A.
7738 780 1498 36 Telecomunicacoes da Bahia S.A

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
36998 1854 112 5 Sudanese Mobile Telephone (ZA
24863 855 338 30 LINKdotNET AS number
6713 554 633 26 Itissalat Al-MAGHRIB
8452 391 956 9 TEDATA
24835 294 144 9 RAYA Telecom - Egypt
3741 256 921 214 The Internet Solution
36992 227 501 29 Etisalat MISR
29571 223 17 12 Ci Telecom Autonomous system
15706 219 32 6 Sudatel Internet Exchange Aut
29975 192 668 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
28573 3434 1784 85 NET Servicos de Comunicao S.A
6389 3056 3688 56 BellSouth.net Inc.
17974 2711 903 89 PT TELEKOMUNIKASI INDONESIA
10620 2642 428 237 TVCABLE BOGOTA
22773 2190 2939 139 Cox Communications, Inc.
4766 2139 11550 641 Korea Telecom (KIX)
7545 2091 319 110 TPG Internet Pty Ltd
18566 2055 379 178 MegaPath Corporation
1785 2036 684 130 PaeTec Communications, Inc.
36998 1854 112 5 Sudanese Mobile Telephone (ZA

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 3056 3000 BellSouth.net Inc.
17974 2711 2622 PT TELEKOMUNIKASI INDONESIA
10620 2642 2405 TVCABLE BOGOTA
22773 2190 2051 Cox Communications, Inc.
7545 2091 1981 TPG Internet Pty Ltd
1785 2036 1906 PaeTec Communications, Inc.
18566 2055 1877 MegaPath Corporation
36998 1854 1849 Sudanese Mobile Telephone (ZA
8402 1786 1769 OJSC "Vimpelcom"
4755 1801 1617 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
62828 UNALLOCATED 8.21.130.0/24 3356 Level 3 Communicatio
62734 UNALLOCATED 8.31.128.0/24 6939 Hurricane Electric
62773 UNALLOCATED 8.35.180.0/22 3356 Level 3 Communicatio
65333 PRIVATE 10.0.0.0/8 0 *
15132 UNALLOCATED 12.9.150.0/24 7018 AT&T WorldNet Servic
62719 UNALLOCATED 12.27.130.0/24 4323 Time Warner Telecom
13317 UNALLOCATED 12.44.10.0/24 7018 AT&T WorldNet Servic
23502 UNALLOCATED 12.44.44.0/24 7018 AT&T WorldNet Servic
17300 UNALLOCATED 12.45.103.0/24 7018 AT&T WorldNet Servic
17300 UNALLOCATED 12.45.110.0/24 701 MCI Communications S

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 IANA Private Address Space
10.1.1.48/29 0 *
100.64.0.0/10 65333 IANA Private Address Space
169.254.0.0/16 65333 IANA Private Address Space
172.16.0.0/12 65333 IANA Private Address Space
192.0.0.0/24 65333 IANA Private Address Space
192.0.2.0/24 65333 IANA Private Address Space
192.168.0.0/16 0 *
198.18.0.0/15 65333 IANA Private Address Space
198.51.100.0/24 65333 IANA Private Address Space

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

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

Network Origin AS Description
23.90.128.0/18 27418 OUTOFWALL INC.
23.90.192.0/18 36086 Broad Communications Technolo
23.91.0.0/19 40676 Psychz Networks
23.91.14.0/24 40676 Psychz Networks
23.91.32.0/19 36315 Servpac Inc.
23.91.80.0/20 21560 Capital Technology Services G
23.91.96.0/20 40676 Psychz Networks
23.91.112.0/21 32475 MidPhase Inc.
23.91.160.0/22 36493 3757277 Canada Inc. (oa 295.c
23.91.160.0/19 36493 3757277 Canada Inc. (oa 295.c

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 /8:17 /9:11 /10:32 /11:92 /12:255
/13:471 /14:923 /15:1625 /16:12811 /17:6772 /18:11246
/19:22993 /20:32749 /21:35394 /22:49411 /23:43430 /24:246935
/25:9 /26:11 /27:12 /28:126 /29:225 /30:155
/31:0 /32:138

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

ASN No of nets Total ann. Description
18566 2009 2055 MegaPath Corporation
36998 1819 1854 Sudanese Mobile Telephone (ZA
6389 1709 3056 BellSouth.net Inc.
8402 1481 1786 OJSC "Vimpelcom"
22773 1456 2190 Cox Communications, Inc.
30036 1235 1388 Mediacom Communications Corp
11492 1199 1240 Cable One
1785 1086 2036 PaeTec Communications, Inc.
6983 1034 1293 ITC^Deltacom
22561 966 1243 Digital Teleport, Inc

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

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

1:876 2:881 3:3 4:16 5:1016 6:21
8:610 12:1893 13:3 14:868 15:11 16:3
17:18 18:19 20:21 23:509 24:1741 27:1614
31:1444 32:40 33:2 34:5 36:81 37:1889
38:916 39:4 40:181 41:3221 42:243 44:14
46:2020 47:11 49:681 50:834 52:12 54:42
55:5 56:2 57:29 58:1077 59:572 60:370
61:1451 62:1214 63:1981 64:4346 65:2347 66:4136
67:2097 68:1103 69:3279 70:872 71:488 72:2036
74:2556 75:328 76:306 77:1143 78:1033 79:641
80:1296 81:1015 82:659 83:632 84:581 85:1240
86:421 87:1008 88:562 89:1594 90:150 91:5646
92:611 93:1601 94:2031 95:1588 96:512 97:345
98:1043 99:39 100:30 101:373 103:3499 105:527
106:142 107:213 108:517 109:1910 110:948 111:1106
112:586 113:809 114:723 115:1005 116:987 117:811
118:1166 119:1256 120:358 121:740 122:1785 123:1253
124:1338 125:1431 128:614 129:219 130:315 131:658
132:355 133:157 134:542 135:67 136:278 137:265
138:350 139:174 140:165 141:320 142:528 143:403
144:492 145:87 146:520 147:385 148:698 149:366
150:150 151:587 152:412 153:204 154:51 155:490
156:287 157:373 158:276 159:686 160:359 161:453
162:822 163:201 164:630 165:578 166:258 167:631
168:1040 169:126 170:1117 171:182 172:25 173:1605
174:687 175:501 176:1267 177:2402 178:1957 179:202
180:1577 181:825 182:1311 183:460 184:666 185:985
186:2630 187:1485 188:1826 189:1267 190:7199 192:7026
193:5410 194:4034 195:3361 196:1331 197:1035 198:4696
199:5440 200:6070 201:2514 202:8738 203:8828 204:4468
205:2621 206:2750 207:2763 208:3984 209:3631 210:2904
211:1559 212:2164 213:1961 214:881 215:90 216:5361
217:1687 218:619 219:316 220:1275 221:579 222:324
223:505

End of report
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