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.

Sunday, November 4, 2012

[bgp-stats] Routing Table Report - London view

* BGP Routing Table Analysis Reports *
Routing Table Report 08:00 +10GMT Mon 05 Nov, 2012

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

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

BGP routing table entries examined: 423168
Prefixes after maximum aggregation: 177291
Deaggregation factor: 2.39
Unique aggregates announced to Internet: 211383
Total ASes present in the Internet Routing Table: 39232
Prefixes per ASN: 10.79
Origin-only ASes present in the Internet Routing Table: 33728
Origin ASes announcing only one prefix: 15805
Transit ASes present in the Internet Routing Table: 5504
Transit-only ASes present in the Internet Routing Table: 135
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 39
Max AS path prepend of ASN ( 22394) 36
Prefixes from unregistered ASNs in the Routing Table: 1600
Unregistered ASNs in the Routing Table: 377
Number of 32-bit ASNs allocated by the RIRs: 3443
Number of 32-bit ASNs visible in the Routing Table: 0
Prefixes from 32-bit ASNs in the Routing Table: 8250
Special use prefixes present in the Routing Table: 20
Prefixes being announced from unallocated address space: 165
Number of addresses announced to Internet: 2630725632
Equivalent to 156 /8s, 205 /16s and 176 /24s
Percentage of available address space announced: 71.1
Percentage of allocated address space announced: 71.1
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 93.8
Total number of prefixes smaller than registry allocations: 146901

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

Prefixes being announced by APNIC Region ASes: 98600
Total APNIC prefixes after maximum aggregation: 31113
APNIC Deaggregation factor: 3.17
Prefixes being announced from the APNIC address blocks: 100007
Unique aggregates announced from the APNIC address blocks: 42946
APNIC Region origin ASes present in the Internet Routing Table: 4736
APNIC Prefixes per ASN: 21.12
APNIC Region origin ASes announcing only one prefix: 1263
APNIC Region transit ASes present in the Internet Routing Table: 748
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: 710972160
Equivalent to 42 /8s, 96 /16s and 147 /24s
Percentage of available APNIC address space announced: 83.1

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: 153399
Total ARIN prefixes after maximum aggregation: 77793
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 154220
Unique aggregates announced from the ARIN address blocks: 69605
ARIN Region origin ASes present in the Internet Routing Table: 15162
ARIN Prefixes per ASN: 10.17
ARIN Region origin ASes announcing only one prefix: 5749
ARIN Region transit ASes present in the Internet Routing Table: 1528
Average ARIN Region AS path length visible: 3.3
Max ARIN Region AS path length visible: 39
Number of ARIN region 32-bit ASNs visible in the Routing Table: 0
Number of ARIN addresses announced to Internet: 1087512064
Equivalent to 64 /8s, 210 /16s and 30 /24s
Percentage of available ARIN address space announced: 57.5

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: 108849
Total RIPE prefixes after maximum aggregation: 57528
RIPE Deaggregation factor: 1.89
Prefixes being announced from the RIPE address blocks: 111612
Unique aggregates announced from the RIPE address blocks: 72309
RIPE Region origin ASes present in the Internet Routing Table: 16921
RIPE Prefixes per ASN: 6.60
RIPE Region origin ASes announcing only one prefix: 8145
RIPE Region transit ASes present in the Internet Routing Table: 2720
Average RIPE Region AS path length visible: 3.5
Max RIPE Region AS path length visible: 28
Number of RIPE region 32-bit ASNs visible in the Routing Table: 0
Number of RIPE addresses announced to Internet: 648680192
Equivalent to 38 /8s, 170 /16s and 19 /24s
Percentage of available RIPE address space announced: 94.3

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: 43654
Total LACNIC prefixes after maximum aggregation: 8575
LACNIC Deaggregation factor: 5.09
Prefixes being announced from the LACNIC address blocks: 47065
Unique aggregates announced from the LACNIC address blocks: 22893
LACNIC Region origin ASes present in the Internet Routing Table: 1683
LACNIC Prefixes per ASN: 27.96
LACNIC Region origin ASes announcing only one prefix: 482
LACNIC Region transit ASes present in the Internet Routing Table: 308
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: 118368512
Equivalent to 7 /8s, 14 /16s and 41 /24s
Percentage of available LACNIC address space announced: 70.6

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: 9670
Total AfriNIC prefixes after maximum aggregation: 2229
AfriNIC Deaggregation factor: 4.34
Prefixes being announced from the AfriNIC address blocks: 10098
Unique aggregates announced from the AfriNIC address blocks: 3488
AfriNIC Region origin ASes present in the Internet Routing Table: 563
AfriNIC Prefixes per ASN: 17.94
AfriNIC Region origin ASes announcing only one prefix: 166
AfriNIC Region transit ASes present in the Internet Routing Table: 122
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: 42608384
Equivalent to 2 /8s, 138 /16s and 39 /24s
Percentage of available AfriNIC address space announced: 42.3

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 2430 829 54 PT Telekomunikasi Indonesia
4766 2108 11550 604 Korea Telecom (KIX)
7545 1795 301 87 TPG Internet Pty Ltd
4755 1599 375 158 TATA Communications formerly
9829 1407 1154 41 National Internet Backbone
9583 1180 88 513 Sify Limited
7552 1077 1062 11 Vietel Corporation
24560 1034 385 161 Bharti Airtel Ltd., Telemedia
9498 1018 310 73 BHARTI Airtel Ltd.
18101 1018 135 171 Reliance Infocom Ltd Internet

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
7029 3201 991 189 Windstream Communications Inc
6389 3169 3723 161 BellSouth.net Inc.
18566 2072 381 182 Covad Communications Co.
22773 1971 2931 129 Cox Communications Inc.
1785 1925 678 127 PaeTec Communications, Inc.
20115 1668 1601 629 Charter Communications
4323 1590 1169 392 tw telecom holdings, inc.
30036 1352 274 747 Mediacom Communications Corp
7018 1269 10305 850 AT&T Services, Inc.
7011 1222 334 692 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 1723 544 16 Corbina telecom
12479 851 776 64 France Telecom Espana SA
34984 824 207 198 BILISIM TELEKOM
31148 726 37 9 FreeNet ISP
13188 720 93 137 Ukraine
6830 717 2313 440 UPC Broadband
20940 692 224 542 Akamai Technologies European
8551 617 364 61 Bezeq International
58113 601 66 364 LIR DATACENTER TELECOM SRL
9116 541 326 32 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
10620 2230 381 238 Types of queries are: POCs, o
28573 2152 1281 63 Types of queries are: POCs, o
7303 1669 1139 202 Telecom Argentina S.A.
6503 1530 435 69 Axtel, S.A.B. de C.V.
8151 1459 3021 350 Uninet S.A. de C.V.
27947 724 77 87 Telconet S.A
3816 656 309 68 Types of queries are: POCs, o
14420 593 90 106 CORPORACION NACIONAL DE TELEC
11172 589 101 65 Alestra, S. de R.L. de C.V.
7738 582 1178 33 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
24863 897 307 37 LINKdotNET AS number
36998 772 48 3 MOBITEL
8452 553 958 13 TEDATA
6713 516 650 19 Itissalat Al-MAGHRIB
24835 287 80 8 RAYA Telecom - Egypt
3741 267 906 225 The Internet Solution
12258 194 28 66 Vodacom Internet Company
15399 193 29 5 Wananchi Online Limited
15706 191 32 6 Sudatel Internet Exchange Aut
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
7029 3201 991 189 Windstream Communications Inc
6389 3169 3723 161 BellSouth.net Inc.
17974 2430 829 54 PT Telekomunikasi Indonesia
10620 2230 381 238 Types of queries are: POCs, o
28573 2152 1281 63 Types of queries are: POCs, o
4766 2108 11550 604 Korea Telecom (KIX)
18566 2072 381 182 Covad Communications Co.
22773 1971 2931 129 Cox Communications Inc.
1785 1925 678 127 PaeTec Communications, Inc.
7545 1795 301 87 TPG Internet Pty Ltd

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 3169 3008 BellSouth.net Inc.
17974 2430 2376 PT Telekomunikasi Indonesia
28573 2152 2089 Types of queries are: POCs, o
10620 2230 1992 Types of queries are: POCs, o
18566 2072 1890 Covad Communications Co.
22773 1971 1842 Cox Communications Inc.
1785 1925 1798 PaeTec Communications, Inc.
7545 1795 1708 TPG Internet Pty Ltd
8402 1723 1707 Corbina telecom
4766 2108 1504 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
59505 UNALLOCATED 5.2.65.0/24 50673 Serverius AS
59505 UNALLOCATED 5.2.66.0/24 50673 Serverius AS
59530 UNALLOCATED 5.8.182.0/24 31261 GARS Telecom
61408 UNALLOCATED 5.56.0.0/21 174 Cogent Communication
59414 UNALLOCATED 5.102.144.0/21 15576 NTS workspace AG
59395 UNALLOCATED 5.133.16.0/21 8468 ENTANET Internationa
59407 UNALLOCATED 5.134.16.0/21 51167 Giga-Hosting GmbH
59521 UNALLOCATED 5.134.192.0/21 29518 Bredband2 AB
59441 UNALLOCATED 5.144.128.0/21 50810 Mobin Net Communicat
59581 UNALLOCATED 5.149.8.0/21 25577 C4L main AS

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
128.0.24.0/21 41794 Sibirskie Seti Ltd.
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
128.0.104.0/23 51848 FOP Gabidullina Ludmila Nikol
128.0.106.0/24 23456 32-bit ASN transition
128.0.128.0/20 29285 AMT closed joint-stock compan
128.0.144.0/22 59675 >>UNKNOWN<<

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

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

Network Origin AS Description
14.192.0.0/22 45464 Room 201, TGU Bldg
14.192.4.0/22 45464 Room 201, TGU Bldg
14.192.8.0/22 45464 Room 201, TGU Bldg
14.192.12.0/22 45464 Room 201, TGU Bldg
14.192.16.0/22 45464 Room 201, TGU Bldg
14.192.20.0/22 45464 Room 201, TGU Bldg
14.192.24.0/22 45464 Room 201, TGU Bldg
14.192.28.0/22 45464 Room 201, TGU Bldg
27.112.114.0/24 23884 Proimage Engineering and Comm
41.220.80.0/24 38925 G.I.T. TELECOM LIMITED

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 /9:14 /10:30 /11:88 /12:243
/13:476 /14:853 /15:1557 /16:12403 /17:6566 /18:10803
/19:21217 /20:30622 /21:32467 /22:42702 /23:39973 /24:222542
/25:10 /26:14 /27:11 /28:145 /29:184 /30:88
/31:0 /32:141

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

ASN No of nets Total ann. Description
7029 2642 3201 Windstream Communications Inc
18566 2022 2072 Covad Communications Co.
6389 1786 3169 BellSouth.net Inc.
8402 1426 1723 Corbina telecom
22773 1300 1971 Cox Communications Inc.
30036 1269 1352 Mediacom Communications Corp
11492 1152 1187 CABLE ONE, INC.
6503 1050 1530 Axtel, S.A.B. de C.V.
1785 1017 1925 PaeTec Communications, Inc.
7011 957 1222 Frontier Communications of Am

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

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

1:609 2:761 3:1 4:13 5:615 6:3
8:474 12:1956 13:3 14:670 15:11 16:3
17:6 20:27 23:211 24:1804 27:1394 31:1049
32:49 33:2 34:2 36:7 37:909 38:812
39:2 40:137 41:2728 42:177 44:3 46:1619
47:2 49:456 50:595 52:12 54:27 55:5
56:3 57:31 58:978 59:536 60:231 61:1277
62:967 63:2002 64:4248 65:2197 66:4467 67:2096
68:1157 69:3222 70:934 71:505 72:1882 74:2608
75:479 76:267 77:974 78:1000 79:510 80:1236
81:984 82:627 83:542 84:529 85:1151 86:496
87:942 88:358 89:1734 90:306 91:5289 92:581
93:1389 94:1701 95:1288 96:411 97:324 98:976
99:36 100:30 101:289 103:1730 105:514 106:120
107:200 108:460 109:1624 110:811 111:976 112:430
113:715 114:663 115:844 116:861 117:751 118:953
119:1186 120:354 121:682 122:1657 123:1158 124:1308
125:1288 128:543 129:188 130:274 131:656 132:308
133:142 134:242 135:62 136:228 137:241 138:336
139:174 140:470 141:291 142:473 143:376 144:494
145:82 146:512 147:260 148:716 149:327 150:151
151:207 152:450 153:183 154:20 155:432 156:223
157:321 158:286 159:589 160:332 161:389 162:367
163:180 164:563 165:443 166:515 167:561 168:994
169:128 170:912 171:154 172:6 173:1714 174:637
175:456 176:730 177:1377 178:1611 180:1374 181:165
182:1096 183:299 184:618 185:50 186:2246 187:1395
188:1730 189:1595 190:5916 192:5993 193:5410 194:4129
195:3463 196:1213 197:225 198:3832 199:5051 200:5944
201:1968 202:8493 203:8618 204:4334 205:2516 206:2658
207:2742 208:4048 209:3599 210:2751 211:1520 212:2104
213:1848 214:895 215:75 216:5131 217:1576 218:564
219:290 220:1248 221:529 222:337 223:399

End of report
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