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.

Tuesday, January 22, 2013

[bgp-stats] Routing Table Report - London view

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

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

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

BGP routing table entries examined: 432854
Prefixes after maximum aggregation: 179453
Deaggregation factor: 2.41
Unique aggregates announced to Internet: 216334
Total ASes present in the Internet Routing Table: 39622
Prefixes per ASN: 10.92
Origin-only ASes present in the Internet Routing Table: 34063
Origin ASes announcing only one prefix: 15928
Transit ASes present in the Internet Routing Table: 5559
Transit-only ASes present in the Internet Routing Table: 119
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 29
Max AS path prepend of ASN ( 28730) 25
Prefixes from unregistered ASNs in the Routing Table: 1000
Unregistered ASNs in the Routing Table: 169
Number of 32-bit ASNs allocated by the RIRs: 3680
Number of 32-bit ASNs visible in the Routing Table: 0
Prefixes from 32-bit ASNs in the Routing Table: 9010
Special use prefixes present in the Routing Table: 24
Prefixes being announced from unallocated address space: 200
Number of addresses announced to Internet: 2649494032
Equivalent to 157 /8s, 236 /16s and 18 /24s
Percentage of available address space announced: 71.6
Percentage of allocated address space announced: 71.6
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 94.1
Total number of prefixes smaller than registry allocations: 150944

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

Prefixes being announced by APNIC Region ASes: 100066
Total APNIC prefixes after maximum aggregation: 31682
APNIC Deaggregation factor: 3.16
Prefixes being announced from the APNIC address blocks: 101734
Unique aggregates announced from the APNIC address blocks: 43859
APNIC Region origin ASes present in the Internet Routing Table: 4767
APNIC Prefixes per ASN: 21.34
APNIC Region origin ASes announcing only one prefix: 1272
APNIC Region transit ASes present in the Internet Routing Table: 767
Average APNIC Region AS path length visible: 4.0
Max APNIC Region AS path length visible: 18
Number of APNIC region 32-bit ASNs visible in the Routing Table: 0
Number of APNIC addresses announced to Internet: 715924992
Equivalent to 42 /8s, 172 /16s and 38 /24s
Percentage of available APNIC address space announced: 83.7

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: 153733
Total ARIN prefixes after maximum aggregation: 78042
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 154399
Unique aggregates announced from the ARIN address blocks: 70700
ARIN Region origin ASes present in the Internet Routing Table: 15333
ARIN Prefixes per ASN: 10.07
ARIN Region origin ASes announcing only one prefix: 5813
ARIN Region transit ASes present in the Internet Routing Table: 1532
Average ARIN Region AS path length visible: 3.3
Max ARIN Region AS path length visible: 24
Number of ARIN region 32-bit ASNs visible in the Routing Table: 0
Number of ARIN addresses announced to Internet: 1091718400
Equivalent to 65 /8s, 18 /16s and 77 /24s
Percentage of available ARIN address space announced: 57.8

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, 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: 113517
Total RIPE prefixes after maximum aggregation: 58284
RIPE Deaggregation factor: 1.95
Prefixes being announced from the RIPE address blocks: 116563
Unique aggregates announced from the RIPE address blocks: 74387
RIPE Region origin ASes present in the Internet Routing Table: 17007
RIPE Prefixes per ASN: 6.85
RIPE Region origin ASes announcing only one prefix: 8142
RIPE Region transit ASes present in the Internet Routing Table: 2727
Average RIPE Region AS path length visible: 3.5
Max RIPE Region AS path length visible: 29
Number of RIPE region 32-bit ASNs visible in the Routing Table: 0
Number of RIPE addresses announced to Internet: 652960528
Equivalent to 38 /8s, 235 /16s and 99 /24s
Percentage of available RIPE address space announced: 94.9

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: 45548
Total LACNIC prefixes after maximum aggregation: 9005
LACNIC Deaggregation factor: 5.06
Prefixes being announced from the LACNIC address blocks: 49182
Unique aggregates announced from the LACNIC address blocks: 23524
LACNIC Region origin ASes present in the Internet Routing Table: 1777
LACNIC Prefixes per ASN: 27.68
LACNIC Region origin ASes announcing only one prefix: 516
LACNIC Region transit ASes present in the Internet Routing Table: 319
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 19
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 0
Number of LACNIC addresses announced to Internet: 122296320
Equivalent to 7 /8s, 74 /16s and 24 /24s
Percentage of available LACNIC address space announced: 72.9

LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
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: 10190
Total AfriNIC prefixes after maximum aggregation: 2388
AfriNIC Deaggregation factor: 4.27
Prefixes being announced from the AfriNIC address blocks: 10775
Unique aggregates announced from the AfriNIC address blocks: 3684
AfriNIC Region origin ASes present in the Internet Routing Table: 589
AfriNIC Prefixes per ASN: 18.29
AfriNIC Region origin ASes announcing only one prefix: 185
AfriNIC Region transit ASes present in the Internet Routing Table: 127
Average AfriNIC Region AS path length visible: 3.3
Max AfriNIC Region AS path length visible: 24
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 0
Number of AfriNIC addresses announced to Internet: 43956736
Equivalent to 2 /8s, 158 /16s and 186 /24s
Percentage of available AfriNIC address space announced: 43.7

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 2454 828 53 PT Telekomunikasi Indonesia
4766 2118 11549 624 Korea Telecom (KIX)
7545 1689 301 85 TPG Internet Pty Ltd
4755 1647 380 173 TATA Communications formerly
9829 1422 1152 45 National Internet Backbone
9583 1190 89 507 Sify Limited
7552 1114 1070 12 Vietel Corporation
9498 1051 310 74 BHARTI Airtel Ltd.
18101 1016 135 170 Reliance Infocom Ltd Internet
24560 1015 372 162 Bharti Airtel Ltd., Telemedia

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 3102 3700 120 BellSouth.net Inc.
7029 2286 1265 212 Windstream Communications Inc
18566 2078 382 178 Covad Communications Co.
22773 1962 2931 128 Cox Communications Inc.
1785 1946 677 123 PaeTec Communications, Inc.
20115 1687 1606 626 Charter Communications
4323 1595 1171 393 tw telecom holdings, inc.
30036 1351 288 693 Mediacom Communications Corp
7018 1308 10582 869 AT&T Services, Inc.
7011 1207 321 686 Frontier Communications of Am

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 1810 544 16 Corbina telecom
2118 1432 97 13 EUnet/RELCOM Autonomous Syste
34984 927 231 207 BILISIM TELEKOM
13188 839 99 26 Ukraine
12479 833 778 65 France Telecom Espana SA
31148 744 38 14 FreeNet ISP
20940 724 244 577 Akamai Technologies European
6830 714 2313 435 UPC Broadband
8551 713 367 39 Bezeq International
58113 633 70 378 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
10620 2290 391 226 Types of queries are: POCs, o
28573 2281 1303 79 Types of queries are: POCs, o
7303 1670 1139 204 Telecom Argentina S.A.
6503 1446 435 69 Axtel, S.A.B. de C.V.
8151 1393 2889 366 Uninet S.A. de C.V.
27947 748 86 92 Telconet S.A
18881 744 716 18 Global Village Telecom
14754 723 77 161 Telgua
3816 672 307 85 Types of queries are: POCs, o
11172 603 102 67 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
24863 891 275 36 LINKdotNET AS number
36998 885 80 4 MOBITEL
8452 550 958 13 TEDATA
6713 499 602 20 Itissalat Al-MAGHRIB
24835 282 80 8 RAYA Telecom - Egypt
3741 266 906 224 The Internet Solution
37054 211 11 6 Data Telecom Service
15399 198 29 7 Wananchi Online Limited
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 3102 3700 120 BellSouth.net Inc.
17974 2454 828 53 PT Telekomunikasi Indonesia
10620 2290 391 226 Types of queries are: POCs, o
7029 2286 1265 212 Windstream Communications Inc
28573 2281 1303 79 Types of queries are: POCs, o
4766 2118 11549 624 Korea Telecom (KIX)
18566 2078 382 178 Covad Communications Co.
22773 1962 2931 128 Cox Communications Inc.
1785 1946 677 123 PaeTec Communications, Inc.
8402 1810 544 16 Corbina telecom

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

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

ASN No of nets Net Savings Description
17974 2454 2401 PT Telekomunikasi Indonesia
28573 2281 2202 Types of queries are: POCs, o
7029 2286 2074 Windstream Communications Inc
10620 2290 2064 Types of queries are: POCs, o
18566 2078 1900 Covad Communications Co.
22773 1962 1834 Cox Communications Inc.
1785 1946 1823 PaeTec Communications, Inc.
8402 1810 1794 Corbina telecom
7545 1689 1604 TPG Internet Pty Ltd
4766 2118 1494 Korea Telecom (KIX)

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

List of Unregistered Origin ASNs (Global)
-----------------------------------------

Bad AS Designation Network Transit AS Description
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 7832 WW/Precision Communi
13317 UNALLOCATED 12.44.10.0/24 7018 AT&T Services, Inc.
23502 UNALLOCATED 12.44.44.0/24 7018 AT&T Services, Inc.
17300 UNALLOCATED 12.45.103.0/24 209 Qwest Communications

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
128.0.24.0/21 41794 Sibirskie Seti Ltd.
128.0.60.0/23 57417 INTERNET TASMANIA SRL
128.0.62.0/23 57417 INTERNET TASMANIA SRL
128.0.64.0/22 49466 Declic Telecom SAS
128.0.68.0/22 49466 Declic Telecom SAS
128.0.72.0/21 23456 32-bit ASN transition
128.0.80.0/20 52041 Timer LTD
128.0.96.0/21 12886 LEWTelNet GmbH

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

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

Network Origin AS Description
27.112.114.0/24 23884 Proimage Engineering and Comm
31.210.16.0/22 15657 Neural Networks ASN
41.222.80.0/21 37110 Moztel LDA
62.12.96.0/19 38478 SunnyVision Limited
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.

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 /8:19 /9:13 /10:30 /11:88 /12:247
/13:477 /14:866 /15:1558 /16:12473 /17:6607 /18:10875
/19:21652 /20:31059 /21:33005 /22:44315 /23:40223 /24:228743
/25:9 /26:11 /27:11 /28:144 /29:187 /30:98
/31:0 /32:144

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

ASN No of nets Total ann. Description
18566 2028 2078 Covad Communications Co.
6389 1771 3102 BellSouth.net Inc.
7029 1642 2286 Windstream Communications Inc
8402 1524 1810 Corbina telecom
22773 1293 1962 Cox Communications Inc.
30036 1248 1351 Mediacom Communications Corp
11492 1157 1194 CABLE ONE, INC.
1785 1029 1946 PaeTec Communications, Inc.
6503 976 1446 Axtel, S.A.B. de C.V.
7011 956 1207 Frontier Communications of Am

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

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

1:667 2:765 3:3 4:13 5:723 6:3
8:486 12:1927 13:3 14:662 15:11 16:3
17:8 20:27 23:222 24:1798 27:1475 31:1140
32:49 33:2 34:4 36:9 37:1228 38:841
39:2 40:138 41:2797 42:179 44:3 46:1721
47:1 49:545 50:633 52:12 54:28 55:3
57:31 58:993 59:557 60:237 61:1297 62:1040
63:2039 64:4296 65:2158 66:4268 67:2010 68:1119
69:3220 70:860 71:536 72:1879 74:2543 75:418
76:290 77:1008 78:1024 79:543 80:1226 81:990
82:664 83:537 84:573 85:1159 86:472 87:969
88:368 89:1726 90:283 91:5399 92:607 93:1652
94:2027 95:1568 96:490 97:332 98:1051 99:49
100:29 101:292 103:2005 105:480 106:129 107:208
108:486 109:1723 110:824 111:988 112:466 113:725
114:676 115:911 116:874 117:770 118:965 119:1241
120:320 121:688 122:1694 123:1164 124:1289 125:1298
128:529 129:191 130:297 131:616 132:316 133:142
134:242 135:62 136:218 137:231 138:340 139:155
140:180 141:298 142:500 143:370 144:477 145:89
146:508 147:334 148:716 149:335 150:153 151:255
152:398 153:189 154:23 155:447 156:231 157:335
158:257 159:616 160:335 161:396 162:366 163:186
164:587 165:454 166:457 167:572 168:1000 169:129
170:1003 171:162 172:4 173:1550 174:757 175:418
176:1012 177:1627 178:1694 180:1366 181:212 182:1142
183:311 184:634 185:171 186:2231 187:1471 188:1886
189:1549 190:6445 192:6111 193:5849 194:4672 195:3658
196:1268 197:550 198:4029 199:5134 200:5944 201:2145
202:8604 203:8654 204:4390 205:2525 206:2677 207:2690
208:4066 209:3475 210:2789 211:1554 212:2019 213:1876
214:916 215:91 216:5019 217:1574 218:586 219:306
220:1263 221:526 222:315 223:407

End of report
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