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, November 22, 2013

[bgp-stats] Routing Table Report - London view

* BGP Routing Table Analysis Reports *
Routing Table Report 08:00 +10GMT Sat 23 Nov, 2013

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

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

BGP routing table entries examined: 468072
Prefixes after maximum aggregation: 188121
Deaggregation factor: 2.49
Unique aggregates announced to Internet: 234161
Total ASes present in the Internet Routing Table: 45404
Prefixes per ASN: 10.31
Origin-only ASes present in the Internet Routing Table: 35415
Origin ASes announcing only one prefix: 16316
Transit ASes present in the Internet Routing Table: 5805
Transit-only ASes present in the Internet Routing Table: 138
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: 1010
Unregistered ASNs in the Routing Table: 291
Number of 32-bit ASNs allocated by the RIRs: 5386
Number of 32-bit ASNs visible in the Routing Table: 4184
Prefixes from 32-bit ASNs in the Routing Table: 13108
Special use prefixes present in the Routing Table: 10
Prefixes being announced from unallocated address space: 1176
Number of addresses announced to Internet: 2675318528
Equivalent to 159 /8s, 118 /16s and 31 /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: 162852

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

Prefixes being announced by APNIC Region ASes: 107859
Total APNIC prefixes after maximum aggregation: 33288
APNIC Deaggregation factor: 3.24
Prefixes being announced from the APNIC address blocks: 110790
Unique aggregates announced from the APNIC address blocks: 47472
APNIC Region origin ASes present in the Internet Routing Table: 4840
APNIC Prefixes per ASN: 22.89
APNIC Region origin ASes announcing only one prefix: 1237
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: 19
Number of APNIC region 32-bit ASNs visible in the Routing Table: 758
Number of APNIC addresses announced to Internet: 727406592
Equivalent to 43 /8s, 91 /16s and 88 /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: 161457
Total ARIN prefixes after maximum aggregation: 81263
ARIN Deaggregation factor: 1.99
Prefixes being announced from the ARIN address blocks: 162369
Unique aggregates announced from the ARIN address blocks: 75835
ARIN Region origin ASes present in the Internet Routing Table: 15889
ARIN Prefixes per ASN: 10.22
ARIN Region origin ASes announcing only one prefix: 6012
ARIN Region transit ASes present in the Internet Routing Table: 1591
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: 1073598976
Equivalent to 63 /8s, 253 /16s and 210 /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: 119689
Total RIPE prefixes after maximum aggregation: 60986
RIPE Deaggregation factor: 1.96
Prefixes being announced from the RIPE address blocks: 123396
Unique aggregates announced from the RIPE address blocks: 78789
RIPE Region origin ASes present in the Internet Routing Table: 17520
RIPE Prefixes per ASN: 7.04
RIPE Region origin ASes announcing only one prefix: 8305
RIPE Region transit ASes present in the Internet Routing Table: 2811
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: 2486
Number of RIPE addresses announced to Internet: 656209664
Equivalent to 39 /8s, 28 /16s and 247 /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: 52704
Total LACNIC prefixes after maximum aggregation: 9809
LACNIC Deaggregation factor: 5.37
Prefixes being announced from the LACNIC address blocks: 57858
Unique aggregates announced from the LACNIC address blocks: 27092
LACNIC Region origin ASes present in the Internet Routing Table: 2037
LACNIC Prefixes per ASN: 28.40
LACNIC Region origin ASes announcing only one prefix: 555
LACNIC Region transit ASes present in the Internet Routing Table: 374
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: 896
Number of LACNIC addresses announced to Internet: 143614208
Equivalent to 8 /8s, 143 /16s and 97 /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: 11853
Total AfriNIC prefixes after maximum aggregation: 2584
AfriNIC Deaggregation factor: 4.59
Prefixes being announced from the AfriNIC address blocks: 12482
Unique aggregates announced from the AfriNIC address blocks: 4022
AfriNIC Region origin ASes present in the Internet Routing Table: 684
AfriNIC Prefixes per ASN: 18.25
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: 48238080
Equivalent to 2 /8s, 224 /16s and 14 /24s
Percentage of available AfriNIC address space announced: 47.9

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 2713 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 1544 1245 45 BSNL National Internet Backbo
9583 1234 95 507 Sify Limited
9498 1195 310 77 BHARTI Airtel Ltd.
7552 1163 1080 13 Vietel Corporation
24560 1095 380 166 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 2210 2941 142 Cox Communications, Inc.
1785 2058 686 145 PaeTec Communications, Inc.
18566 2052 379 177 MegaPath Corporation
20115 1681 1655 598 Charter Communications
4323 1651 1114 421 Time Warner Telecom
701 1509 11163 786 MCI Communications Services,
30036 1388 313 578 Mediacom Communications Corp
7018 1339 17794 878 AT&T WorldNet Services
6983 1296 758 581 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 1862 544 16 OJSC "Vimpelcom"
34984 1368 244 224 TELLCOM ILETISIM HIZMETLERI A
20940 1164 435 879 Akamai Technologies European
31148 1009 45 19 FreeNet ISP
13188 894 99 48 TOV "Bank-Inform"
6849 869 363 39 JSC UKRTELECOM,
8551 800 370 41 Bezeq International
6830 776 2328 428 UPC Distribution Services
12479 679 797 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 3389 1794 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 1344 2847 411 UniNet S.A. de C.V.
11830 866 364 15 Instituto Costarricense de El
27947 821 94 92 Telconet S.A
6147 790 373 27 Telefonica Del Peru
6503 789 434 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 1864 112 5 Sudanese Mobile Telephone (ZA
24863 888 338 26 LINKdotNET AS number
6713 554 633 26 Itissalat Al-MAGHRIB
8452 411 956 9 TEDATA
24835 297 144 9 RAYA Telecom - Egypt
3741 256 921 214 The Internet Solution
29571 226 17 13 Ci Telecom Autonomous system
15706 221 32 6 Sudatel Internet Exchange Aut
36992 219 501 29 Etisalat MISR
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 3389 1794 88 NET Servicos de Comunicao S.A
6389 3042 3688 53 BellSouth.net Inc.
17974 2713 902 88 PT TELEKOMUNIKASI INDONESIA
10620 2671 433 213 Telmex Colombia S.A.
22773 2210 2941 142 Cox Communications, Inc.
4766 2138 11550 641 Korea Telecom (KIX)
7545 2082 319 110 TPG Internet Pty Ltd
1785 2058 686 145 PaeTec Communications, Inc.
18566 2052 379 177 MegaPath Corporation
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 3042 2989 BellSouth.net Inc.
17974 2713 2625 PT TELEKOMUNIKASI INDONESIA
10620 2671 2458 Telmex Colombia S.A.
22773 2210 2068 Cox Communications, Inc.
7545 2082 1972 TPG Internet Pty Ltd
1785 2058 1913 PaeTec Communications, Inc.
18566 2052 1875 MegaPath Corporation
36998 1864 1859 Sudanese Mobile Telephone (ZA
8402 1862 1846 OJSC "Vimpelcom"
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.
23.91.160.0/22 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 /12:254
/13:472 /14:926 /15:1625 /16:12787 /17:6791 /18:11258
/19:23077 /20:32964 /21:35515 /22:49519 /23:43559 /24:248497
/25:8 /26:11 /27:12 /28:126 /29:224 /30:155
/31:0 /32:140

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 1544 1862 OJSC "Vimpelcom"
22773 1465 2210 Cox Communications, Inc.
30036 1232 1388 Mediacom Communications Corp
11492 1195 1233 Cable One
1785 1095 2058 PaeTec Communications, Inc.
6983 1036 1296 ITC^Deltacom
22561 962 1239 Digital Teleport, Inc

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

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

1:895 2:861 3:3 4:16 5:1028 6:21
8:603 12:1879 13:3 14:877 15:11 16:3
17:18 18:19 20:21 23:582 24:1756 27:1622
31:1517 32:40 33:2 34:5 36:86 37:1937
38:909 39:5 40:182 41:3281 42:286 44:14
46:2026 47:11 49:692 50:848 52:12 54:44
55:4 56:4 57:29 58:1088 59:572 60:365
61:1460 62:1242 63:1984 64:4316 65:2344 66:4158
67:2103 68:1092 69:3278 70:890 71:487 72:2011
74:2574 75:325 76:303 77:1129 78:1046 79:659
80:1275 81:1048 82:655 83:682 84:586 85:1259
86:375 87:1024 88:557 89:1564 90:152 91:5693
92:615 93:1612 94:2072 95:1556 96:515 97:348
98:1040 99:41 100:31 101:403 103:3649 105:527
106:141 107:218 108:518 109:1980 110:972 111:1105
112:582 113:811 114:734 115:1021 116:977 117:802
118:1182 119:1261 120:329 121:743 122:1785 123:1261
124:1357 125:1439 128:629 129:217 130:336 131:658
132:355 133:158 134:292 135:72 136:283 137:244
138:352 139:295 140:173 141:318 142:534 143:399
144:491 145:90 146:521 147:399 148:727 149:361
150:152 151:665 152:412 153:205 154:55 155:500
156:292 157:369 158:283 159:695 160:361 161:452
162:866 163:204 164:604 165:585 166:263 167:634
168:1034 169:124 170:1126 171:185 172:27 173:1591
174:694 175:508 176:1311 177:2497 178:1867 179:305
180:1576 181:862 182:1375 183:467 184:622 185:1060
186:2654 187:1494 188:1863 189:1266 190:7269 192:7004
193:5435 194:4026 195:3367 196:1335 197:1086 198:4703
199:5456 200:6030 201:2522 202:8797 203:8794 204:4475
205:2630 206:2746 207:2768 208:3974 209:3641 210:2932
211:1568 212:2172 213:1997 214:893 215:91 216:5388
217:1695 218:618 219:316 220:1273 221:585 222:324
223:503

End of report
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