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.

Friday, October 18, 2013

[bgp-stats] Routing Table Report - London view

* BGP Routing Table Analysis Reports *
Routing Table Report 08:00 +10GMT Sat 19 Oct, 2013

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

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

BGP routing table entries examined: 465018
Prefixes after maximum aggregation: 187766
Deaggregation factor: 2.48
Unique aggregates announced to Internet: 233053
Total ASes present in the Internet Routing Table: 41077
Prefixes per ASN: 11.32
Origin-only ASes present in the Internet Routing Table: 35259
Origin ASes announcing only one prefix: 16296
Transit ASes present in the Internet Routing Table: 5811
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: 322
Unregistered ASNs in the Routing Table: 175
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: 12419
Special use prefixes present in the Routing Table: 11
Prefixes being announced from unallocated address space: 771
Number of addresses announced to Internet: 2669539328
Equivalent to 159 /8s, 29 /16s and 240 /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: 162141

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

Prefixes being announced by APNIC Region ASes: 107077
Total APNIC prefixes after maximum aggregation: 33037
APNIC Deaggregation factor: 3.24
Prefixes being announced from the APNIC address blocks: 109789
Unique aggregates announced from the APNIC address blocks: 46785
APNIC Region origin ASes present in the Internet Routing Table: 4842
APNIC Prefixes per ASN: 22.67
APNIC Region origin ASes announcing only one prefix: 1241
APNIC Region transit ASes present in the Internet Routing Table: 817
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: 727194368
Equivalent to 43 /8s, 88 /16s and 27 /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: 162046
Total ARIN prefixes after maximum aggregation: 81044
ARIN Deaggregation factor: 2.00
Prefixes being announced from the ARIN address blocks: 162571
Unique aggregates announced from the ARIN address blocks: 75910
ARIN Region origin ASes present in the Internet Routing Table: 15846
ARIN Prefixes per ASN: 10.26
ARIN Region origin ASes announcing only one prefix: 6014
ARIN Region transit ASes present in the Internet Routing Table: 1615
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: 1072647424
Equivalent to 63 /8s, 239 /16s and 77 /24s
Percentage of available ARIN address space announced: 56.7

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: 119131
Total RIPE prefixes after maximum aggregation: 61289
RIPE Deaggregation factor: 1.94
Prefixes being announced from the RIPE address blocks: 122726
Unique aggregates announced from the RIPE address blocks: 79096
RIPE Region origin ASes present in the Internet Routing Table: 17480
RIPE Prefixes per ASN: 7.02
RIPE Region origin ASes announcing only one prefix: 8285
RIPE Region transit ASes present in the Internet Routing Table: 2801
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: 656752128
Equivalent to 39 /8s, 37 /16s and 62 /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: 51644
Total LACNIC prefixes after maximum aggregation: 9750
LACNIC Deaggregation factor: 5.30
Prefixes being announced from the LACNIC address blocks: 56659
Unique aggregates announced from the LACNIC address blocks: 26634
LACNIC Region origin ASes present in the Internet Routing Table: 2029
LACNIC Prefixes per ASN: 27.92
LACNIC Region origin ASes announcing only one prefix: 567
LACNIC Region transit ASes present in the Internet Routing Table: 366
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: 140813312
Equivalent to 8 /8s, 100 /16s and 164 /24s
Percentage of available LACNIC address space announced: 83.9

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: 11857
Total AfriNIC prefixes after maximum aggregation: 2543
AfriNIC Deaggregation factor: 4.66
Prefixes being announced from the AfriNIC address blocks: 12500
Unique aggregates announced from the AfriNIC address blocks: 3977
AfriNIC Region origin ASes present in the Internet Routing Table: 656
AfriNIC Prefixes per ASN: 19.05
AfriNIC Region origin ASes announcing only one prefix: 189
AfriNIC Region transit ASes present in the Internet Routing Table: 132
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: 47747072
Equivalent to 2 /8s, 216 /16s and 144 /24s
Percentage of available AfriNIC address space announced: 47.4

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 1553 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 2056 379 179 Covad Communications
1785 2027 680 130 PaeTec Communications, Inc.
20115 1682 1653 613 Charter Communications
4323 1625 1120 425 Time Warner Telecom
701 1508 11145 785 UUNET Technologies, Inc.
30036 1391 314 569 Mediacom Communications Corp
7018 1336 17538 867 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 1767 544 17 OJSC "Vimpelcom"
34984 1362 244 220 TELLCOM ILETISIM HIZMETLERI A
20940 1077 395 825 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 3424 1772 96 NET Servicos de Comunicao S.A
10620 2606 424 245 TVCABLE BOGOTA
7303 1723 1135 236 Telecom Argentina Stet-France
18881 1473 844 20 Global Village Telecom
8151 1328 2818 415 UniNet S.A. de C.V.
11830 865 364 15 Instituto Costarricense de El
27947 815 94 92 Telconet S.A
6147 793 373 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 3424 1772 96 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 2056 379 179 Covad Communications
1785 2027 680 130 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 2027 1897 PaeTec Communications, Inc.
18566 2056 1877 Covad Communications
36998 1864 1859 Sudanese Mobile Telephone (ZA
8402 1767 1750 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 /14:914 /15:1624 /16:12799 /17:6728 /18:11187
/19:22963 /20:32647 /21:35203 /22:49582 /23:42654 /24:247184
/25:9 /26:11 /27:10 /28:126 /29:218 /30:142
/31:0 /32:134

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

ASN No of nets Total ann. Description
18566 2009 2056 Covad Communications
36998 1829 1864 Sudanese Mobile Telephone (ZA
6389 1707 3057 BellSouth.net Inc.
8402 1470 1767 OJSC "Vimpelcom"
22773 1450 2183 Cox Communications, Inc.
30036 1241 1391 Mediacom Communications Corp
11492 1193 1234 Cable One
1785 1088 2027 PaeTec Communications, Inc.
6983 1035 1294 ITC^Deltacom
22561 962 1237 Digital Teleport, Inc

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

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

1:852 2:842 3:3 4:16 5:971 6:20
8:604 12:1888 13:3 14:852 15:11 16:3
17:17 18:19 20:21 23:479 24:1706 27:1623
31:1492 32:40 33:2 34:5 36:81 37:1829
38:913 39:3 40:181 41:3325 42:246 44:12
46:2013 47:7 49:681 50:826 52:12 54:39
55:3 56:2 57:29 58:1091 59:569 60:355
61:1461 62:1192 63:1977 64:4530 65:2346 66:4138
67:2143 68:1097 69:3280 70:870 71:494 72:2014
74:2567 75:327 76:306 77:1132 78:1074 79:644
80:1332 81:1017 82:646 83:584 84:608 85:1200
86:454 87:1014 88:561 89:1750 90:155 91:5657
92:613 93:1604 94:2039 95:1599 96:519 97:344
98:1047 99:40 100:30 101:364 103:3414 105:524
106:143 107:211 108:494 109:1914 110:966 111:1091
112:574 113:793 114:698 115:990 116:975 117:805
118:1169 119:1263 120:366 121:735 122:1779 123:1223
124:1350 125:1431 128:606 129:214 130:309 131:659
132:340 133:158 134:668 135:67 136:276 137:238
138:348 139:172 140:170 141:319 142:533 143:407
144:498 145:93 146:515 147:395 148:697 149:353
150:155 151:598 152:410 153:204 154:47 155:487
156:281 157:373 158:285 159:684 160:355 161:449
162:796 163:206 164:629 165:663 166:258 167:622
168:1037 169:134 170:1118 171:191 172:25 173:1614
174:680 175:500 176:1211 177:2351 178:1932 179:175
180:1570 181:761 182:1331 183:455 184:652 185:932
186:2601 187:1477 188:1874 189:1271 190:7199 192:7023
193:5413 194:4034 195:3326 196:1335 197:1087 198:4689
199:5430 200:6080 201:2535 202:8788 203:8822 204:4495
205:2654 206:2745 207:2846 208:3997 209:3629 210:2897
211:1557 212:2215 213:2022 214:888 215:90 216:5325
217:1683 218:612 219:308 220:1275 221:576 222:323
223:494

End of report
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