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.

Saturday, October 19, 2013

[bgp-stats] Routing Table Report - London view

* BGP Routing Table Analysis Reports *
Routing Table Report 08:00 +10GMT Sun 20 Oct, 2013

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

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

BGP routing table entries examined: 464985
Prefixes after maximum aggregation: 187682
Deaggregation factor: 2.48
Unique aggregates announced to Internet: 233007
Total ASes present in the Internet Routing Table: 41070
Prefixes per ASN: 11.32
Origin-only ASes present in the Internet Routing Table: 35253
Origin ASes announcing only one prefix: 16307
Transit ASes present in the Internet Routing Table: 5810
Transit-only ASes present in the Internet Routing Table: 139
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: 328
Unregistered ASNs in the Routing Table: 177
Number of 32-bit ASNs allocated by the RIRs: 5216
Number of 32-bit ASNs visible in the Routing Table: 7
Prefixes from 32-bit ASNs in the Routing Table: 12449
Special use prefixes present in the Routing Table: 11
Prefixes being announced from unallocated address space: 778
Number of addresses announced to Internet: 2669630976
Equivalent to 159 /8s, 31 /16s and 86 /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: 95.1
Total number of prefixes smaller than registry allocations: 162145

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

Prefixes being announced by APNIC Region ASes: 107147
Total APNIC prefixes after maximum aggregation: 33055
APNIC Deaggregation factor: 3.24
Prefixes being announced from the APNIC address blocks: 109851
Unique aggregates announced from the APNIC address blocks: 46824
APNIC Region origin ASes present in the Internet Routing Table: 4849
APNIC Prefixes per ASN: 22.65
APNIC Region origin ASes announcing only one prefix: 1242
APNIC Region transit ASes present in the Internet Routing Table: 819
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: 727469312
Equivalent to 43 /8s, 92 /16s and 77 /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: 161990
Total ARIN prefixes after maximum aggregation: 81028
ARIN Deaggregation factor: 2.00
Prefixes being announced from the ARIN address blocks: 162501
Unique aggregates announced from the ARIN address blocks: 75919
ARIN Region origin ASes present in the Internet Routing Table: 15841
ARIN Prefixes per ASN: 10.26
ARIN Region origin ASes announcing only one prefix: 6017
ARIN Region transit ASes present in the Internet Routing Table: 1613
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: 1072758272
Equivalent to 63 /8s, 240 /16s and 254 /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: 119075
Total RIPE prefixes after maximum aggregation: 61205
RIPE Deaggregation factor: 1.95
Prefixes being announced from the RIPE address blocks: 122676
Unique aggregates announced from the RIPE address blocks: 79043
RIPE Region origin ASes present in the Internet Routing Table: 17469
RIPE Prefixes per ASN: 7.02
RIPE Region origin ASes announcing only one prefix: 8287
RIPE Region transit ASes present in the Internet Routing Table: 2797
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: 656656896
Equivalent to 39 /8s, 35 /16s and 202 /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: 51642
Total LACNIC prefixes after maximum aggregation: 9742
LACNIC Deaggregation factor: 5.30
Prefixes being announced from the LACNIC address blocks: 56695
Unique aggregates announced from the LACNIC address blocks: 26590
LACNIC Region origin ASes present in the Internet Routing Table: 2027
LACNIC Prefixes per ASN: 27.97
LACNIC Region origin ASes announcing only one prefix: 568
LACNIC Region transit ASes present in the Internet Routing Table: 368
Average LACNIC Region AS path length visible: 4.2
Max LACNIC Region AS path length visible: 19
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 2
Number of LACNIC addresses announced to Internet: 140565504
Equivalent to 8 /8s, 96 /16s and 220 /24s
Percentage of available LACNIC address space announced: 83.8

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: 11833
Total AfriNIC prefixes after maximum aggregation: 2543
AfriNIC Deaggregation factor: 4.65
Prefixes being announced from the AfriNIC address blocks: 12482
Unique aggregates announced from the AfriNIC address blocks: 3974
AfriNIC Region origin ASes present in the Internet Routing Table: 658
AfriNIC Prefixes per ASN: 18.97
AfriNIC Region origin ASes announcing only one prefix: 193
AfriNIC Region transit ASes present in the Internet Routing Table: 134
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: 47780096
Equivalent to 2 /8s, 217 /16s and 17 /24s
Percentage of available AfriNIC address space announced: 47.5

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 2715 903 89 PT TELEKOMUNIKASI INDONESIA
4766 2142 11555 644 Korea Telecom (KIX)
7545 2078 319 112 TPG Internet Pty Ltd
4755 1793 400 183 TATA Communications formerly
9829 1556 1241 43 BSNL National Internet Backbo
9583 1241 94 511 Sify Limited
9498 1213 310 79 BHARTI Airtel Ltd.
7552 1145 1080 13 Vietel Corporation
24560 1091 380 164 Bharti Airtel Ltd., Telemedia
4808 1077 2022 312 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 3057 3689 58 BellSouth.net Inc.
22773 2183 2943 141 Cox Communications, Inc.
18566 2038 379 179 Covad Communications
1785 2033 682 132 PaeTec Communications, Inc.
20115 1682 1653 613 Charter Communications
4323 1625 1120 425 Time Warner Telecom
701 1509 11145 786 UUNET Technologies, Inc.
30036 1391 314 569 Mediacom Communications Corp
7018 1338 17539 868 AT&T WorldNet Services
6983 1294 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 1754 544 17 OJSC "Vimpelcom"
34984 1362 244 220 TELLCOM ILETISIM HIZMETLERI A
20940 1077 396 824 Akamai Technologies European
31148 995 44 20 FreeNet ISP
6830 894 2332 427 UPC Distribution Services
13188 879 99 62 TOV "Bank-Inform"
8551 769 370 41 Bezeq International
12479 687 799 49 Uni2 Autonomous System
9116 555 327 36 Goldenlines main autonomous s
35228 540 246 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 3429 1772 91 NET Servicos de Comunicao S.A
10620 2606 424 245 TVCABLE BOGOTA
7303 1717 1134 232 Telecom Argentina Stet-France
18881 1473 844 20 Global Village Telecom
8151 1329 2821 415 UniNet S.A. de C.V.
11830 865 364 15 Instituto Costarricense de El
27947 815 94 92 Telconet S.A
6147 792 373 27 Telefonica Del Peru
6503 785 434 64 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 1864 112 5 Sudanese Mobile Telephone (ZA
24863 881 274 29 LINKdotNET AS number
6713 554 633 26 Itissalat Al-MAGHRIB
8452 425 956 9 TEDATA
24835 292 80 8 RAYA Telecom - Egypt
3741 258 921 216 The Internet Solution
29571 223 17 11 Ci Telecom Autonomous system
36992 222 501 28 Etisalat MISR
15706 221 32 6 Sudatel Internet Exchange Aut
37054 212 11 5 Data Telecom Service

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 3429 1772 91 NET Servicos de Comunicao S.A
6389 3057 3689 58 BellSouth.net Inc.
17974 2715 903 89 PT TELEKOMUNIKASI INDONESIA
10620 2606 424 245 TVCABLE BOGOTA
22773 2183 2943 141 Cox Communications, Inc.
4766 2142 11555 644 Korea Telecom (KIX)
7545 2078 319 112 TPG Internet Pty Ltd
18566 2038 379 179 Covad Communications
1785 2033 682 132 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 3057 2999 BellSouth.net Inc.
17974 2715 2626 PT TELEKOMUNIKASI INDONESIA
10620 2606 2361 TVCABLE BOGOTA
22773 2183 2042 Cox Communications, Inc.
7545 2078 1966 TPG Internet Pty Ltd
1785 2033 1901 PaeTec Communications, Inc.
18566 2038 1859 Covad Communications
36998 1864 1859 Sudanese Mobile Telephone (ZA
8402 1754 1737 OJSC "Vimpelcom"
4755 1793 1610 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
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 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 /14:915 /15:1625 /16:12797 /17:6727 /18:11184
/19:22963 /20:32647 /21:35198 /22:49581 /23:42682 /24:247134
/25:9 /26:11 /27:11 /28:126 /29:216 /30:143
/31:0 /32:133

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

ASN No of nets Total ann. Description
18566 1991 2038 Covad Communications
36998 1829 1864 Sudanese Mobile Telephone (ZA
6389 1707 3057 BellSouth.net Inc.
8402 1459 1754 OJSC "Vimpelcom"
22773 1450 2183 Cox Communications, Inc.
30036 1241 1391 Mediacom Communications Corp
11492 1193 1234 Cable One
1785 1089 2033 PaeTec Communications, Inc.
6983 1035 1294 ITC^Deltacom
22561 963 1238 Digital Teleport, Inc

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

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

1:854 2:832 3:3 4:16 5:986 6:20
8:605 12:1887 13:3 14:851 15:11 16:3
17:17 18:19 20:21 23:479 24:1706 27:1625
31:1491 32:40 33:2 34:5 36:82 37:1819
38:910 39:4 40:181 41:3308 42:246 44:12
46:2018 47:7 49:679 50:803 52:12 54:39
55:3 56:2 57:29 58:1091 59:570 60:355
61:1462 62:1189 63:1976 64:4554 65:2344 66:4118
67:2147 68:1096 69:3278 70:874 71:494 72:2014
74:2567 75:327 76:306 77:1137 78:1074 79:649
80:1332 81:1016 82:636 83:584 84:609 85:1225
86:455 87:1018 88:561 89:1747 90:155 91:5654
92:612 93:1609 94:2039 95:1589 96:518 97:344
98:1048 99:40 100:30 101:365 103:3426 105:524
106:143 107:211 108:494 109:1908 110:963 111:1091
112:575 113:792 114:700 115:989 116:970 117:805
118:1173 119:1263 120:366 121:737 122:1790 123:1227
124:1349 125:1431 128:603 129:214 130:310 131:661
132:340 133:158 134:668 135:67 136:277 137:238
138:348 139:172 140:171 141:310 142:533 143:406
144:496 145:93 146:514 147:397 148:695 149:353
150:150 151:601 152:410 153:204 154:50 155:483
156:277 157:373 158:281 159:683 160:354 161:449
162:795 163:206 164:625 165:662 166:258 167:622
168:1034 169:134 170:1117 171:190 172:25 173:1612
174:680 175:500 176:1231 177:2373 178:1940 179:183
180:1570 181:761 182:1331 183:455 184:652 185:937
186:2610 187:1481 188:1871 189:1276 190:7157 192:7017
193:5401 194:4031 195:3322 196:1327 197:1087 198:4676
199:5434 200:6077 201:2537 202:8795 203:8830 204:4493
205:2646 206:2739 207:2846 208:3999 209:3626 210:2899
211:1556 212:2212 213:2021 214:893 215:90 216:5318
217:1681 218:613 219:307 220:1275 221:576 222:323
223:495

End of report
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