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 25, 2013

[bgp-stats] Routing Table Report - London view

* BGP Routing Table Analysis Reports *
Routing Table Report 08:00 +10GMT Tue 26 Nov, 2013

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

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

BGP routing table entries examined: 467827
Prefixes after maximum aggregation: 188200
Deaggregation factor: 2.49
Unique aggregates announced to Internet: 234071
Total ASes present in the Internet Routing Table: 45409
Prefixes per ASN: 10.30
Origin-only ASes present in the Internet Routing Table: 35398
Origin ASes announcing only one prefix: 16319
Transit ASes present in the Internet Routing Table: 5813
Transit-only ASes present in the Internet Routing Table: 144
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: 1021
Unregistered ASNs in the Routing Table: 293
Number of 32-bit ASNs allocated by the RIRs: 5399
Number of 32-bit ASNs visible in the Routing Table: 4198
Prefixes from 32-bit ASNs in the Routing Table: 13191
Special use prefixes present in the Routing Table: 10
Prefixes being announced from unallocated address space: 1200
Number of addresses announced to Internet: 2675667200
Equivalent to 159 /8s, 123 /16s and 113 /24s
Percentage of available address space announced: 72.3
Percentage of allocated address space announced: 72.3
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 95.3
Total number of prefixes smaller than registry allocations: 162865

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

Prefixes being announced by APNIC Region ASes: 107884
Total APNIC prefixes after maximum aggregation: 33293
APNIC Deaggregation factor: 3.24
Prefixes being announced from the APNIC address blocks: 110829
Unique aggregates announced from the APNIC address blocks: 47495
APNIC Region origin ASes present in the Internet Routing Table: 4840
APNIC Prefixes per ASN: 22.90
APNIC Region origin ASes announcing only one prefix: 1239
APNIC Region transit ASes present in the Internet Routing Table: 818
Average APNIC Region AS path length visible: 3.8
Max APNIC Region AS path length visible: 19
Number of APNIC region 32-bit ASNs visible in the Routing Table: 761
Number of APNIC addresses announced to Internet: 727563520
Equivalent to 43 /8s, 93 /16s and 189 /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: 161358
Total ARIN prefixes after maximum aggregation: 81185
ARIN Deaggregation factor: 1.99
Prefixes being announced from the ARIN address blocks: 162251
Unique aggregates announced from the ARIN address blocks: 75729
ARIN Region origin ASes present in the Internet Routing Table: 15885
ARIN Prefixes per ASN: 10.21
ARIN Region origin ASes announcing only one prefix: 6013
ARIN Region transit ASes present in the Internet Routing Table: 1590
Average ARIN Region AS path length visible: 3.3
Max ARIN Region AS path length visible: 19
Number of ARIN region 32-bit ASNs visible in the Routing Table: 38
Number of ARIN addresses announced to Internet: 1073570304
Equivalent to 63 /8s, 253 /16s and 98 /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: 119606
Total RIPE prefixes after maximum aggregation: 61003
RIPE Deaggregation factor: 1.96
Prefixes being announced from the RIPE address blocks: 123346
Unique aggregates announced from the RIPE address blocks: 78802
RIPE Region origin ASes present in the Internet Routing Table: 17512
RIPE Prefixes per ASN: 7.04
RIPE Region origin ASes announcing only one prefix: 8307
RIPE Region transit ASes present in the Internet Routing Table: 2809
Average RIPE Region AS path length visible: 3.6
Max RIPE Region AS path length visible: 24
Number of RIPE region 32-bit ASNs visible in the Routing Table: 2492
Number of RIPE addresses announced to Internet: 656017408
Equivalent to 39 /8s, 26 /16s and 8 /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: 52496
Total LACNIC prefixes after maximum aggregation: 9949
LACNIC Deaggregation factor: 5.28
Prefixes being announced from the LACNIC address blocks: 57690
Unique aggregates announced from the LACNIC address blocks: 27062
LACNIC Region origin ASes present in the Internet Routing Table: 2029
LACNIC Prefixes per ASN: 28.43
LACNIC Region origin ASes announcing only one prefix: 553
LACNIC Region transit ASes present in the Internet Routing Table: 378
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: 901
Number of LACNIC addresses announced to Internet: 143643648
Equivalent to 8 /8s, 143 /16s and 212 /24s
Percentage of available LACNIC address space announced: 85.6

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: 11879
Total AfriNIC prefixes after maximum aggregation: 2579
AfriNIC Deaggregation factor: 4.61
Prefixes being announced from the AfriNIC address blocks: 12510
Unique aggregates announced from the AfriNIC address blocks: 4013
AfriNIC Region origin ASes present in the Internet Routing Table: 686
AfriNIC Prefixes per ASN: 18.24
AfriNIC Region origin ASes announcing only one prefix: 207
AfriNIC Region transit ASes present in the Internet Routing Table: 137
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: 6
Number of AfriNIC addresses announced to Internet: 48549376
Equivalent to 2 /8s, 228 /16s and 206 /24s
Percentage of available AfriNIC address space announced: 48.2

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 2715 902 88 PT TELEKOMUNIKASI INDONESIA
4766 2138 11550 641 Korea Telecom (KIX)
7545 2082 319 110 TPG Internet Pty Ltd
4755 1806 401 186 TATA Communications formerly
9829 1542 1245 45 BSNL National Internet Backbo
9583 1236 95 504 Sify Limited
9498 1194 310 77 BHARTI Airtel Ltd.
7552 1163 1080 13 Vietel Corporation
24560 1096 382 166 Bharti Airtel Ltd., Telemedia
4808 1060 2014 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 3042 3688 53 BellSouth.net Inc.
22773 2206 2939 137 Cox Communications, Inc.
18566 2052 379 177 MegaPath Corporation
1785 2043 685 131 PaeTec Communications, Inc.
20115 1680 1653 601 Charter Communications
4323 1649 1114 421 Time Warner Telecom
701 1508 11147 785 MCI Communications Services,
30036 1389 313 578 Mediacom Communications Corp
7018 1340 17795 879 AT&T WorldNet Services
6983 1294 756 580 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 1891 544 16 OJSC "Vimpelcom"
34984 1368 244 224 TELLCOM ILETISIM HIZMETLERI A
20940 1170 439 883 Akamai Technologies European
31148 1009 45 19 FreeNet ISP
13188 895 99 48 TOV "Bank-Inform"
6849 869 363 39 JSC UKRTELECOM,
8551 786 370 41 Bezeq International
6830 775 2327 427 UPC Distribution Services
12479 673 797 57 Uni2 Autonomous System
9116 554 326 35 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 3385 1796 88 NET Servicos de Comunicao S.A
10620 2671 433 213 Telmex Colombia S.A.
7303 1729 1151 232 Telecom Argentina Stet-France
18881 1647 908 20 Global Village Telecom
8151 1346 2849 413 UniNet S.A. de C.V.
11830 867 364 15 Instituto Costarricense de El
27947 820 94 91 Telconet S.A
6503 788 434 63 AVANTEL, S.A.
6147 784 373 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 888 338 26 LINKdotNET AS number
6713 554 633 26 Itissalat Al-MAGHRIB
8452 412 956 9 TEDATA
24835 297 144 9 RAYA Telecom - Egypt
3741 256 921 214 The Internet Solution
29571 227 17 14 Ci Telecom Autonomous system
15706 221 32 6 Sudatel Internet Exchange Aut
36992 220 501 29 Etisalat MISR
37054 210 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 3385 1796 88 NET Servicos de Comunicao S.A
6389 3042 3688 53 BellSouth.net Inc.
17974 2715 902 88 PT TELEKOMUNIKASI INDONESIA
10620 2671 433 213 Telmex Colombia S.A.
22773 2206 2939 137 Cox Communications, Inc.
4766 2138 11550 641 Korea Telecom (KIX)
7545 2082 319 110 TPG Internet Pty Ltd
18566 2052 379 177 MegaPath Corporation
1785 2043 685 131 PaeTec Communications, Inc.
8402 1891 544 16 OJSC "Vimpelcom"

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 3042 2989 BellSouth.net Inc.
17974 2715 2627 PT TELEKOMUNIKASI INDONESIA
10620 2671 2458 Telmex Colombia S.A.
22773 2206 2069 Cox Communications, Inc.
7545 2082 1972 TPG Internet Pty Ltd
1785 2043 1912 PaeTec Communications, Inc.
18566 2052 1875 MegaPath Corporation
8402 1891 1875 OJSC "Vimpelcom"
36998 1864 1859 Sudanese Mobile Telephone (ZA
18881 1647 1627 Global Village Telecom

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
62850 UNALLOCATED 8.25.147.0/24 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
62861 UNALLOCATED 12.37.197.0/24 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

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
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
203.0.113.0/24 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.
23.91.0.0/19 40676 Psychz Networks
23.91.4.0/24 40676 Psychz Networks
23.91.14.0/24 40676 Psychz Networks
23.91.21.0/24 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 37958 ChinaCache Networks ASN
23.91.112.0/21 32475 MidPhase Inc.
23.91.120.0/21 36351 SoftLayer Technologies Inc.

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 /12:254
/13:472 /14:927 /15:1628 /16:12801 /17:6791 /18:11249
/19:23081 /20:32911 /21:35509 /22:49494 /23:43524 /24:248360
/25:8 /26:11 /27:12 /28:124 /29:225 /30:155
/31:0 /32:139

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

ASN No of nets Total ann. Description
18566 2006 2052 MegaPath Corporation
36998 1829 1864 Sudanese Mobile Telephone (ZA
6389 1700 3042 BellSouth.net Inc.
8402 1573 1891 OJSC "Vimpelcom"
22773 1462 2206 Cox Communications, Inc.
30036 1232 1389 Mediacom Communications Corp
11492 1191 1228 Cable One
1785 1088 2043 PaeTec Communications, Inc.
6983 1035 1294 ITC^Deltacom
22561 962 1238 Digital Teleport, Inc

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

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

1:899 2:886 3:3 4:16 5:1027 6:21
8:602 12:1877 13:3 14:878 15:11 16:3
17:18 18:19 20:21 23:590 24:1749 27:1675
31:1506 32:40 33:2 34:5 36:87 37:1940
38:909 39:5 40:182 41:3331 42:285 44:14
46:2036 47:11 49:692 50:850 52:12 54:44
55:5 56:4 57:29 58:1081 59:573 60:365
61:1448 62:1248 63:1976 64:4349 65:2347 66:4152
67:2098 68:1092 69:3288 70:886 71:487 72:2011
74:2579 75:318 76:303 77:1124 78:1061 79:661
80:1283 81:1049 82:653 83:682 84:585 85:1252
86:377 87:1024 88:559 89:1561 90:152 91:5689
92:610 93:1608 94:2078 95:1563 96:516 97:348
98:1039 99:41 100:31 101:409 103:3661 105:528
106:142 107:218 108:518 109:1983 110:974 111:1100
112:585 113:812 114:739 115:1012 116:984 117:801
118:1183 119:1265 120:331 121:737 122:1784 123:1264
124:1383 125:1432 128:629 129:221 130:335 131:639
132:347 133:158 134:293 135:72 136:282 137:246
138:352 139:176 140:172 141:322 142:534 143:395
144:493 145:90 146:523 147:401 148:729 149:369
150:152 151:646 152:412 153:205 154:54 155:500
156:300 157:370 158:282 159:694 160:361 161:452
162:863 163:204 164:616 165:581 166:261 167:634
168:1036 169:124 170:1120 171:184 172:27 173:1587
174:661 175:508 176:1311 177:2529 178:1869 179:303
180:1573 181:864 182:1376 183:452 184:622 185:1064
186:2656 187:1486 188:1827 189:1253 190:7260 192:7011
193:5433 194:4030 195:3359 196:1335 197:1060 198:4706
199:5463 200:6013 201:2515 202:8788 203:8803 204:4477
205:2631 206:2751 207:2733 208:3965 209:3639 210:2895
211:1563 212:2179 213:1997 214:895 215:87 216:5377
217:1706 218:618 219:316 220:1272 221:583 222:324
223:500

End of report
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