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, October 9, 2013

[bgp-stats] Routing Table Report - London view

* BGP Routing Table Analysis Reports *
Routing Table Report 08:00 +10GMT Thu 10 Oct, 2013

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

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

BGP routing table entries examined: 464441
Prefixes after maximum aggregation: 187697
Deaggregation factor: 2.47
Unique aggregates announced to Internet: 232724
Total ASes present in the Internet Routing Table: 41014
Prefixes per ASN: 11.32
Origin-only ASes present in the Internet Routing Table: 35214
Origin ASes announcing only one prefix: 16272
Transit ASes present in the Internet Routing Table: 5792
Transit-only ASes present in the Internet Routing Table: 142
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: 557
Unregistered ASNs in the Routing Table: 291
Number of 32-bit ASNs allocated by the RIRs: 5163
Number of 32-bit ASNs visible in the Routing Table: 8
Prefixes from 32-bit ASNs in the Routing Table: 12269
Special use prefixes present in the Routing Table: 11
Prefixes being announced from unallocated address space: 730
Number of addresses announced to Internet: 2668327936
Equivalent to 159 /8s, 11 /16s and 116 /24s
Percentage of available address space announced: 72.1
Percentage of allocated address space announced: 72.1
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 95.0
Total number of prefixes smaller than registry allocations: 161732

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

Prefixes being announced by APNIC Region ASes: 107465
Total APNIC prefixes after maximum aggregation: 33031
APNIC Deaggregation factor: 3.25
Prefixes being announced from the APNIC address blocks: 110156
Unique aggregates announced from the APNIC address blocks: 46739
APNIC Region origin ASes present in the Internet Routing Table: 4840
APNIC Prefixes per ASN: 22.76
APNIC Region origin ASes announcing only one prefix: 1236
APNIC Region transit ASes present in the Internet Routing Table: 803
Average APNIC Region AS path length visible: 3.8
Max APNIC Region AS path length visible: 28
Number of APNIC region 32-bit ASNs visible in the Routing Table: 1
Number of APNIC addresses announced to Internet: 727144192
Equivalent to 43 /8s, 87 /16s and 87 /24s
Percentage of available APNIC address space announced: 85.0

APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319,
58368-59391, 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: 161511
Total ARIN prefixes after maximum aggregation: 81128
ARIN Deaggregation factor: 1.99
Prefixes being announced from the ARIN address blocks: 162076
Unique aggregates announced from the ARIN address blocks: 75907
ARIN Region origin ASes present in the Internet Routing Table: 15829
ARIN Prefixes per ASN: 10.24
ARIN Region origin ASes announcing only one prefix: 6007
ARIN Region transit ASes present in the Internet Routing Table: 1609
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: 2
Number of ARIN addresses announced to Internet: 1072940544
Equivalent to 63 /8s, 243 /16s and 198 /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: 119035
Total RIPE prefixes after maximum aggregation: 61274
RIPE Deaggregation factor: 1.94
Prefixes being announced from the RIPE address blocks: 122592
Unique aggregates announced from the RIPE address blocks: 79125
RIPE Region origin ASes present in the Internet Routing Table: 17446
RIPE Prefixes per ASN: 7.03
RIPE Region origin ASes announcing only one prefix: 8273
RIPE Region transit ASes present in the Internet Routing Table: 2793
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: 1
Number of RIPE addresses announced to Internet: 656221952
Equivalent to 39 /8s, 29 /16s and 39 /24s
Percentage of available RIPE address space announced: 95.4

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: 51570
Total LACNIC prefixes after maximum aggregation: 9649
LACNIC Deaggregation factor: 5.34
Prefixes being announced from the LACNIC address blocks: 56501
Unique aggregates announced from the LACNIC address blocks: 26344
LACNIC Region origin ASes present in the Internet Routing Table: 2024
LACNIC Prefixes per ASN: 27.92
LACNIC Region origin ASes announcing only one prefix: 564
LACNIC Region transit ASes present in the Internet Routing Table: 372
Average LACNIC Region AS path length visible: 4.2
Max LACNIC Region AS path length visible: 21
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 3
Number of LACNIC addresses announced to Internet: 140124928
Equivalent to 8 /8s, 90 /16s and 35 /24s
Percentage of available LACNIC address space announced: 83.5

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: 11744
Total AfriNIC prefixes after maximum aggregation: 2524
AfriNIC Deaggregation factor: 4.65
Prefixes being announced from the AfriNIC address blocks: 12384
Unique aggregates announced from the AfriNIC address blocks: 3982
AfriNIC Region origin ASes present in the Internet Routing Table: 657
AfriNIC Prefixes per ASN: 18.85
AfriNIC Region origin ASes announcing only one prefix: 192
AfriNIC Region transit ASes present in the Internet Routing Table: 131
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: 1
Number of AfriNIC addresses announced to Internet: 47598080
Equivalent to 2 /8s, 214 /16s and 74 /24s
Percentage of available AfriNIC address space announced: 47.3

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 90 PT TELEKOMUNIKASI INDONESIA
4766 2141 11555 644 Korea Telecom (KIX)
7545 2078 321 112 TPG Internet Pty Ltd
4755 1810 403 191 TATA Communications formerly
9829 1556 1241 43 BSNL National Internet Backbo
9583 1235 93 510 Sify Limited
9498 1203 310 76 BHARTI Airtel Ltd.
7552 1149 1080 13 Vietel Corporation
24560 1091 380 164 Bharti Airtel Ltd., Telemedia
4808 1074 2020 311 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 3060 3689 59 BellSouth.net Inc.
22773 2064 2943 141 Cox Communications, Inc.
18566 2063 382 183 Covad Communications
1785 2019 679 125 PaeTec Communications, Inc.
20115 1679 1651 616 Charter Communications
4323 1632 1120 423 Time Warner Telecom
701 1515 11148 790 UUNET Technologies, Inc.
7018 1341 17531 867 AT&T WorldNet Services
30036 1337 301 640 Mediacom Communications Corp
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 1775 544 17 OJSC "Vimpelcom"
34984 1365 244 222 TELLCOM ILETISIM HIZMETLERI A
20940 1066 395 816 Akamai Technologies European
31148 991 44 19 FreeNet ISP
6830 897 2366 430 UPC Distribution Services
13188 850 99 62 TOV "Bank-Inform"
8551 766 370 41 Bezeq International
12479 679 799 49 Uni2 Autonomous System
9116 553 326 34 Goldenlines main autonomous s
35228 538 246 16 Avatar Broadband Limited

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 3371 1736 89 NET Servicos de Comunicao S.A
10620 2600 423 249 TVCABLE BOGOTA
7303 1724 1135 233 Telecom Argentina Stet-France
18881 1462 844 20 Global Village Telecom
8151 1324 2813 412 UniNet S.A. de C.V.
11830 865 364 15 Instituto Costarricense de El
6503 857 434 64 AVANTEL, S.A.
27947 813 94 92 Telconet S.A
6147 800 373 27 Telefonica Del Peru
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 1864 112 5 Sudanese Mobile Telephone (ZA
24863 882 274 29 LINKdotNET AS number
6713 554 633 26 Itissalat Al-MAGHRIB
8452 426 956 9 TEDATA
24835 292 80 8 RAYA Telecom - Egypt
3741 258 921 216 The Internet Solution
29571 222 17 11 Ci Telecom Autonomous system
36992 222 501 28 Etisalat MISR
15706 221 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 3371 1736 89 NET Servicos de Comunicao S.A
6389 3060 3689 59 BellSouth.net Inc.
17974 2711 903 90 PT TELEKOMUNIKASI INDONESIA
10620 2600 423 249 TVCABLE BOGOTA
4766 2141 11555 644 Korea Telecom (KIX)
7545 2078 321 112 TPG Internet Pty Ltd
22773 2064 2943 141 Cox Communications, Inc.
18566 2063 382 183 Covad Communications
1785 2019 679 125 PaeTec Communications, Inc.
36998 1864 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 3060 3001 BellSouth.net Inc.
17974 2711 2621 PT TELEKOMUNIKASI INDONESIA
10620 2600 2351 TVCABLE BOGOTA
7545 2078 1966 TPG Internet Pty Ltd
22773 2064 1923 Cox Communications, Inc.
1785 2019 1894 PaeTec Communications, Inc.
18566 2063 1880 Covad Communications
36998 1864 1859 Sudanese Mobile Telephone (ZA
8402 1775 1758 OJSC "Vimpelcom"
4755 1810 1619 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
60687 UNALLOCATED 5.153.104.0/21 2119 Telenor Internet Acc
62734 UNALLOCATED 8.31.128.0/24 6939 Hurricane Electric
65333 PRIVATE 10.0.0.0/8 0 *
15132 UNALLOCATED 12.9.150.0/24 7018 AT&T WorldNet Servic
30031 UNALLOCATED 12.27.122.0/24 7018 AT&T WorldNet Servic
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 12.45.103.0/24 209 Qwest
17300 UNALLOCATED 12.45.110.0/24 701 UUNET Technologies,
16476 UNALLOCATED 12.46.27.0/24 7018 AT&T WorldNet Servic

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
23.91.32.0/19 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
23.91.164.0/22 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 /12:252
/13:479 /14:912 /15:1624 /16:12785 /17:6716 /18:11157
/19:22925 /20:32634 /21:35220 /22:49399 /23:42625 /24:246913
/25:9 /26:11 /27:10 /28:129 /29:215 /30:140
/31:0 /32:134

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

ASN No of nets Total ann. Description
18566 2014 2063 Covad Communications
36998 1829 1864 Sudanese Mobile Telephone (ZA
6389 1709 3060 BellSouth.net Inc.
8402 1494 1775 OJSC "Vimpelcom"
22773 1335 2064 Cox Communications, Inc.
30036 1194 1337 Mediacom Communications Corp
11492 1192 1233 Cable One
1785 1085 2019 PaeTec Communications, Inc.
6983 1034 1293 ITC^Deltacom
22561 963 1237 Digital Teleport, Inc

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

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

1:834 2:879 3:3 4:16 5:993 6:19
8:604 12:1896 13:3 14:851 15:11 16:3
17:14 18:19 20:21 23:453 24:1719 27:1601
31:1481 32:40 33:2 34:5 36:81 37:1843
38:906 39:3 40:181 41:3282 42:248 44:14
46:2017 47:7 49:681 50:809 52:12 54:39
55:2 56:2 57:29 58:1086 59:632 60:357
61:1488 62:1187 63:1976 64:4537 65:2349 66:4163
67:2109 68:1088 69:3276 70:858 71:496 72:1992
74:2564 75:326 76:306 77:1134 78:1069 79:648
80:1344 81:1020 82:630 83:568 84:595 85:1203
86:454 87:1009 88:555 89:1740 90:155 91:5627
92:611 93:1609 94:2027 95:1639 96:514 97:342
98:1032 99:40 100:30 101:367 103:3353 105:522
106:143 107:212 108:493 109:1894 110:957 111:1128
112:576 113:786 114:712 115:1051 116:974 117:804
118:1173 119:1251 120:367 121:842 122:1793 123:1209
124:1340 125:1426 128:586 129:304 130:310 131:663
132:342 133:158 134:535 135:67 136:275 137:237
138:348 139:178 140:169 141:312 142:530 143:415
144:499 145:92 146:513 147:393 148:692 149:350
150:156 151:611 152:412 153:200 154:47 155:487
156:279 157:373 158:281 159:675 160:350 161:446
162:754 163:206 164:630 165:563 166:257 167:621
168:1038 169:126 170:1081 171:202 172:25 173:1612
174:663 175:496 176:1193 177:2346 178:1915 179:171
180:1564 181:755 182:1329 183:475 184:653 185:925
186:2570 187:1479 188:1874 189:1360 190:7163 192:6962
193:5626 194:4070 195:3312 196:1320 197:1064 198:4646
199:5430 200:6083 201:2528 202:8791 203:8851 204:4443
205:2618 206:2752 207:2830 208:3997 209:3612 210:2852
211:1568 212:2184 213:2012 214:903 215:99 216:5371
217:1680 218:611 219:327 220:1274 221:566 222:324
223:495

End of report
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