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, May 27, 2013

[bgp-stats] Routing Table Report - London view

* BGP Routing Table Analysis Reports *
Routing Table Report 08:00 +10GMT Tue 28 May, 2013

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

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

BGP routing table entries examined: 447921
Prefixes after maximum aggregation: 183355
Deaggregation factor: 2.44
Unique aggregates announced to Internet: 224419
Total ASes present in the Internet Routing Table: 40352
Prefixes per ASN: 11.10
Origin-only ASes present in the Internet Routing Table: 34652
Origin ASes announcing only one prefix: 16133
Transit ASes present in the Internet Routing Table: 5692
Transit-only ASes present in the Internet Routing Table: 133
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 52
Max AS path prepend of ASN ( 56484) 51
Prefixes from unregistered ASNs in the Routing Table: 807
Unregistered ASNs in the Routing Table: 159
Number of 32-bit ASNs allocated by the RIRs: 4777
Number of 32-bit ASNs visible in the Routing Table: 8
Prefixes from 32-bit ASNs in the Routing Table: 10430
Special use prefixes present in the Routing Table: 31
Prefixes being announced from unallocated address space: 239
Number of addresses announced to Internet: 2640280320
Equivalent to 157 /8s, 95 /16s and 123 /24s
Percentage of available address space announced: 71.3
Percentage of allocated address space announced: 71.3
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 94.5
Total number of prefixes smaller than registry allocations: 156161

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

Prefixes being announced by APNIC Region ASes: 103499
Total APNIC prefixes after maximum aggregation: 32076
APNIC Deaggregation factor: 3.23
Prefixes being announced from the APNIC address blocks: 105508
Unique aggregates announced from the APNIC address blocks: 44783
APNIC Region origin ASes present in the Internet Routing Table: 4803
APNIC Prefixes per ASN: 21.97
APNIC Region origin ASes announcing only one prefix: 1242
APNIC Region transit ASes present in the Internet Routing Table: 791
Average APNIC Region AS path length visible: 4.0
Max APNIC Region AS path length visible: 21
Number of APNIC region 32-bit ASNs visible in the Routing Table: 1
Number of APNIC addresses announced to Internet: 721348096
Equivalent to 42 /8s, 254 /16s and 230 /24s
Percentage of available APNIC address space announced: 84.3

APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319,
58368-59391, 131072-133119
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: 158056
Total ARIN prefixes after maximum aggregation: 79824
ARIN Deaggregation factor: 1.98
Prefixes being announced from the ARIN address blocks: 158667
Unique aggregates announced from the ARIN address blocks: 73216
ARIN Region origin ASes present in the Internet Routing Table: 15645
ARIN Prefixes per ASN: 10.14
ARIN Region origin ASes announcing only one prefix: 5971
ARIN Region transit ASes present in the Internet Routing Table: 1585
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: 2
Number of ARIN addresses announced to Internet: 1063381504
Equivalent to 63 /8s, 97 /16s and 234 /24s
Percentage of available ARIN address space announced: 56.3

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, 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: 117184
Total RIPE prefixes after maximum aggregation: 59714
RIPE Deaggregation factor: 1.96
Prefixes being announced from the RIPE address blocks: 120802
Unique aggregates announced from the RIPE address blocks: 77935
RIPE Region origin ASes present in the Internet Routing Table: 17174
RIPE Prefixes per ASN: 7.03
RIPE Region origin ASes announcing only one prefix: 8151
RIPE Region transit ASes present in the Internet Routing Table: 2777
Average RIPE Region AS path length visible: 3.5
Max RIPE Region AS path length visible: 52
Number of RIPE region 32-bit ASNs visible in the Routing Table: 1
Number of RIPE addresses announced to Internet: 656563456
Equivalent to 39 /8s, 34 /16s and 93 /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, 196608-199679
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: 47125
Total LACNIC prefixes after maximum aggregation: 9187
LACNIC Deaggregation factor: 5.13
Prefixes being announced from the LACNIC address blocks: 51255
Unique aggregates announced from the LACNIC address blocks: 24359
LACNIC Region origin ASes present in the Internet Routing Table: 1927
LACNIC Prefixes per ASN: 26.60
LACNIC Region origin ASes announcing only one prefix: 579
LACNIC Region transit ASes present in the Internet Routing Table: 343
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: 3
Number of LACNIC addresses announced to Internet: 129970432
Equivalent to 7 /8s, 191 /16s and 49 /24s
Percentage of available LACNIC address space announced: 77.5

LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
61440-62463, 262144-263167 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: 10890
Total AfriNIC prefixes after maximum aggregation: 2514
AfriNIC Deaggregation factor: 4.33
Prefixes being announced from the AfriNIC address blocks: 11449
Unique aggregates announced from the AfriNIC address blocks: 3902
AfriNIC Region origin ASes present in the Internet Routing Table: 635
AfriNIC Prefixes per ASN: 18.03
AfriNIC Region origin ASes announcing only one prefix: 190
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: 18
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1
Number of AfriNIC addresses announced to Internet: 47502848
Equivalent to 2 /8s, 212 /16s and 214 /24s
Percentage of available AfriNIC address space announced: 47.2

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 2517 839 86 PT Telekomunikasi Indonesia
4766 2143 11551 627 Korea Telecom (KIX)
7545 1977 320 107 TPG Internet Pty Ltd
4755 1720 390 190 TATA Communications formerly
9829 1502 1205 40 National Internet Backbone
9583 1209 91 505 Sify Limited
7552 1156 1064 12 Vietel Corporation
9498 1117 309 74 BHARTI Airtel Ltd.
24560 1073 393 166 Bharti Airtel Ltd., Telemedia
4808 1047 2006 302 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 3018 3693 79 BellSouth.net Inc.
18566 2063 381 182 Covad Communications Co.
1785 1991 677 124 PaeTec Communications, Inc.
22773 1979 2929 125 Cox Communications Inc.
7029 1937 1265 211 Windstream Communications Inc
20115 1670 1609 611 Charter Communications
4323 1609 1154 399 tw telecom holdings, inc.
30036 1327 296 644 Mediacom Communications Corp
7018 1319 11107 852 AT&T Services, Inc.
11492 1234 221 342 CABLE ONE, INC.

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 1750 544 16 Corbina telecom
2118 1260 97 13 EUnet/RELCOM Autonomous Syste
34984 1199 237 224 BILISIM TELEKOM
20940 852 299 671 Akamai Technologies European
13188 822 98 73 Ukraine
8551 814 370 43 Bezeq International
31148 809 40 24 FreeNet ISP
6830 770 2377 443 UPC Broadband
34744 688 173 56 SC GVM SISTEM 2003 SRL
58113 666 74 386 LIR DATACENTER TELECOM SRL

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 2770 1535 114 Types of queries are: POCs, o
10620 2632 413 231 Types of queries are: POCs, o
7303 1727 1154 223 Telecom Argentina S.A.
8151 1244 2706 394 Uninet S.A. de C.V.
18881 952 780 19 Global Village Telecom
6503 931 435 70 Axtel, S.A.B. de C.V.
27947 813 89 104 Telconet S.A
3816 710 307 87 Types of queries are: POCs, o
7738 698 1370 35 Telecomunicacoes da Bahia S.A
11172 611 103 66 Alestra, S. de R.L. de C.V.

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 1117 80 4 MOBITEL
24863 893 274 33 LINKdotNET AS number
6713 542 617 25 Itissalat Al-MAGHRIB
8452 438 956 9 TEDATA
24835 344 80 8 RAYA Telecom - Egypt
3741 261 906 220 The Internet Solution
15706 222 32 6 Sudatel Internet Exchange Aut
37054 196 11 5 Data Telecom Service
12258 193 28 67 Vodacom Internet Company
29975 191 667 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
6389 3018 3693 79 BellSouth.net Inc.
28573 2770 1535 114 Types of queries are: POCs, o
10620 2632 413 231 Types of queries are: POCs, o
17974 2517 839 86 PT Telekomunikasi Indonesia
4766 2143 11551 627 Korea Telecom (KIX)
18566 2063 381 182 Covad Communications Co.
1785 1991 677 124 PaeTec Communications, Inc.
22773 1979 2929 125 Cox Communications Inc.
7545 1977 320 107 TPG Internet Pty Ltd
7029 1937 1265 211 Windstream Communications Inc

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

Global Per AS Maximum Aggr summary
----------------------------------

ASN No of nets Net Savings Description
28573 2770 2656 Types of queries are: POCs, o
17974 2517 2431 PT Telekomunikasi Indonesia
10620 2632 2401 Types of queries are: POCs, o
18566 2063 1881 Covad Communications Co.
7545 1977 1870 TPG Internet Pty Ltd
1785 1991 1867 PaeTec Communications, Inc.
22773 1979 1854 Cox Communications Inc.
8402 1750 1734 Corbina telecom
7029 1937 1726 Windstream Communications Inc
4755 1720 1530 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
65101 PRIVATE 5.16.192.0/19 41733 JSC "Z-Telecom"
65333 PRIVATE 10.0.0.0/8 0 *
32805 UNALLOCATED 12.1.225.0/24 7018 AT&T Services, Inc.
15132 UNALLOCATED 12.9.150.0/24 7018 AT&T Services, Inc.
16504 UNALLOCATED 12.18.155.0/24 30170 Optic Fusion
30031 UNALLOCATED 12.27.122.0/24 7018 AT&T Services, Inc.
21861 UNALLOCATED 12.37.59.0/24 7018 AT&T Services, Inc.
19577 UNALLOCATED 12.41.188.0/24 7018 AT&T Services, Inc.
13317 UNALLOCATED 12.44.10.0/24 7018 AT&T Services, Inc.
23502 UNALLOCATED 12.44.44.0/24 7018 AT&T Services, Inc.

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 Internet Assigned Numbers Aut
128.0.0.0/24 2876 Jump Management SRL
128.0.16.0/21 43568 Romerike Bredband AS
128.0.24.0/21 41794 Sibirskie Seti Ltd.
128.0.46.0/23 39743 Mobimax Telecom SRL
128.0.53.0/24 60993 Totalsoft SA
128.0.54.0/24 60972 Carpatair SA
128.0.57.0/24 60993 Totalsoft SA
128.0.58.0/23 9050 RTD-ROMTELECOM Autonomous Sys
128.0.60.0/24 9050 RTD-ROMTELECOM Autonomous Sys

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

Advertised Unallocated Addresses
--------------------------------

Network Origin AS Description
62.61.220.0/24 24974 Tachyon Europe BV
62.61.221.0/24 24974 Tachyon Europe BV
64.185.224.0/24 27431 JTL Networks Inc.
64.185.225.0/24 27431 JTL Networks Inc.
64.185.226.0/24 27431 JTL Networks Inc.
64.185.227.0/24 27431 JTL Networks Inc.
64.185.228.0/24 27431 JTL Networks Inc.
64.185.229.0/24 27431 JTL Networks Inc.
64.185.230.0/24 27431 JTL Networks Inc.
64.185.231.0/24 27431 JTL Networks 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 /10:31 /11:88 /12:250
/13:481 /14:894 /15:1588 /16:12629 /17:6647 /18:11098
/19:22141 /20:31977 /21:34060 /22:46888 /23:41858 /24:236649
/25:9 /26:11 /27:12 /28:134 /29:206 /30:109
/31:0 /32:133

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

ASN No of nets Total ann. Description
18566 2014 2063 Covad Communications Co.
6389 1733 3018 BellSouth.net Inc.
7029 1468 1937 Windstream Communications Inc
8402 1446 1750 Corbina telecom
22773 1287 1979 Cox Communications Inc.
30036 1197 1327 Mediacom Communications Corp
11492 1194 1234 CABLE ONE, INC.
36998 1111 1117 MOBITEL
1785 1063 1991 PaeTec Communications, Inc.
6983 1008 1133 ITC^Deltacom

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

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

1:766 2:791 3:3 4:12 5:887 6:9
8:547 12:1927 13:3 14:800 15:11 16:3
17:9 20:17 23:272 24:1762 27:1468 31:1312
32:38 33:2 34:5 36:28 37:1860 38:872
39:2 40:172 41:2780 42:187 44:6 46:1911
47:2 49:591 50:700 52:12 54:33 55:7
57:29 58:1080 59:561 60:308 61:1387 62:1117
63:2032 64:4344 65:2173 66:4368 67:2062 68:1128
69:3264 70:878 71:519 72:1920 74:2564 75:408
76:305 77:1075 78:1037 79:596 80:1265 81:1003
82:632 83:563 84:516 85:1164 86:456 87:971
88:536 89:1715 90:145 91:5490 92:590 93:1702
94:1833 95:1506 96:515 97:344 98:1037 99:38
100:29 101:326 103:2610 105:447 106:94 107:209
108:500 109:1821 110:885 111:1033 112:514 113:786
114:704 115:941 116:901 117:783 118:1072 119:1253
120:386 121:716 122:1756 123:1221 124:1317 125:1349
128:607 129:198 130:311 131:642 132:326 133:149
134:257 135:66 136:220 137:257 138:344 139:193
140:181 141:313 142:523 143:366 144:479 145:93
146:503 147:382 148:671 149:373 150:150 151:567
152:415 153:197 154:42 155:394 156:261 157:350
158:279 159:643 160:338 161:406 162:424 163:200
164:591 165:491 166:281 167:591 168:1028 169:128
170:1026 171:180 172:22 173:1654 174:588 175:473
176:1097 177:1979 178:1853 179:14 180:1432 181:405
182:1188 183:384 184:674 185:464 186:2266 187:1288
188:2130 189:1317 190:6280 192:6583 193:5862 194:4594
195:3423 196:1367 197:964 198:4391 199:5274 200:5853
201:2268 202:8688 203:8754 204:4433 205:2533 206:2749
207:2834 208:4035 209:3621 210:2869 211:1501 212:2221
213:1929 214:899 215:98 216:5235 217:1603 218:603
219:314 220:1254 221:558 222:316 223:443

End of report
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