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.

Wednesday, August 1, 2012

[bgp-stats] Routing Table Report - London view

* BGP Routing Table Analysis Reports *
Routing Table Report 08:00 +10GMT Thu 02 Aug, 2012

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

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

BGP routing table entries examined: 412424
Prefixes after maximum aggregation: 174560
Deaggregation factor: 2.36
Unique aggregates announced to Internet: 204753
Total ASes present in the Internet Routing Table: 38846
Prefixes per ASN: 10.62
Origin-only ASes present in the Internet Routing Table: 33443
Origin ASes announcing only one prefix: 15718
Transit ASes present in the Internet Routing Table: 5403
Transit-only ASes present in the Internet Routing Table: 116
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: 1063
Unregistered ASNs in the Routing Table: 192
Number of 32-bit ASNs allocated by the RIRs: 3054
Number of 32-bit ASNs visible in the Routing Table: 0
Prefixes from 32-bit ASNs in the Routing Table: 6876
Special use prefixes present in the Routing Table: 6
Prefixes being announced from unallocated address space: 172
Number of addresses announced to Internet: 2592351232
Equivalent to 154 /8s, 132 /16s and 36 /24s
Percentage of available address space announced: 69.9
Percentage of allocated address space announced: 70.0
Percentage of available address space allocated: 99.9
Percentage of address space in use by end-sites: 93.1
Total number of prefixes smaller than registry allocations: 142925

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

Prefixes being announced by APNIC Region ASes: 96339
Total APNIC prefixes after maximum aggregation: 31208
APNIC Deaggregation factor: 3.09
Prefixes being announced from the APNIC address blocks: 97430
Unique aggregates announced from the APNIC address blocks: 42163
APNIC Region origin ASes present in the Internet Routing Table: 4686
APNIC Prefixes per ASN: 20.79
APNIC Region origin ASes announcing only one prefix: 1269
APNIC Region transit ASes present in the Internet Routing Table: 731
Average APNIC Region AS path length visible: 4.1
Max APNIC Region AS path length visible: 20
Number of APNIC region 32-bit ASNs visible in the Routing Table: 0
Number of APNIC addresses announced to Internet: 704342528
Equivalent to 41 /8s, 251 /16s and 106 /24s
Percentage of available APNIC address space announced: 82.3

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: 151961
Total ARIN prefixes after maximum aggregation: 77283
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 152982
Unique aggregates announced from the ARIN address blocks: 68820
ARIN Region origin ASes present in the Internet Routing Table: 15147
ARIN Prefixes per ASN: 10.10
ARIN Region origin ASes announcing only one prefix: 5753
ARIN Region transit ASes present in the Internet Routing Table: 1523
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: 1072951296
Equivalent to 63 /8s, 243 /16s and 240 /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, 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: 104891
Total RIPE prefixes after maximum aggregation: 55599
RIPE Deaggregation factor: 1.89
Prefixes being announced from the RIPE address blocks: 107095
Unique aggregates announced from the RIPE address blocks: 68274
RIPE Region origin ASes present in the Internet Routing Table: 16708
RIPE Prefixes per ASN: 6.41
RIPE Region origin ASes announcing only one prefix: 8104
RIPE Region transit ASes present in the Internet Routing Table: 2653
Average RIPE Region AS path length visible: 3.5
Max RIPE Region AS path length visible: 23
Number of RIPE region 32-bit ASNs visible in the Routing Table: 0
Number of RIPE addresses announced to Internet: 638289920
Equivalent to 38 /8s, 11 /16s and 136 /24s
Percentage of available RIPE address space announced: 92.8

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: 42170
Total LACNIC prefixes after maximum aggregation: 8245
LACNIC Deaggregation factor: 5.11
Prefixes being announced from the LACNIC address blocks: 44859
Unique aggregates announced from the LACNIC address blocks: 21981
LACNIC Region origin ASes present in the Internet Routing Table: 1602
LACNIC Prefixes per ASN: 28.00
LACNIC Region origin ASes announcing only one prefix: 424
LACNIC Region transit ASes present in the Internet Routing Table: 305
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: 112810752
Equivalent to 6 /8s, 185 /16s and 91 /24s
Percentage of available LACNIC address space announced: 67.2

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: 9459
Total AfriNIC prefixes after maximum aggregation: 2170
AfriNIC Deaggregation factor: 4.36
Prefixes being announced from the AfriNIC address blocks: 9885
Unique aggregates announced from the AfriNIC address blocks: 3363
AfriNIC Region origin ASes present in the Internet Routing Table: 553
AfriNIC Prefixes per ASN: 17.88
AfriNIC Region origin ASes announcing only one prefix: 168
AfriNIC Region transit ASes present in the Internet Routing Table: 121
Average AfriNIC Region AS path length visible: 3.5
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: 41369856
Equivalent to 2 /8s, 119 /16s and 65 /24s
Percentage of available AfriNIC address space announced: 41.1

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 2286 702 54 PT Telekomunikasi Indonesia
4766 2024 11112 784 Korea Telecom (KIX)
7545 1693 301 88 TPG Internet Pty Ltd
4755 1580 385 155 TATA Communications formerly
9829 1309 1084 31 National Internet Backbone
9583 1160 87 508 Sify Limited
7552 1110 1062 11 Vietel Corporation
24560 1037 385 165 Bharti Airtel Ltd., Telemedia
9498 993 294 73 BHARTI Airtel Ltd.
4808 967 1943 291 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
7029 3440 986 155 Windstream Communications Inc
6389 3381 3773 193 BellSouth.net Inc.
18566 2089 382 181 Covad Communications Co.
1785 1941 681 131 PaeTec Communications, Inc.
22773 1697 2914 125 Cox Communications Inc.
20115 1646 1572 611 Charter Communications
4323 1571 1043 382 tw telecom holdings, inc.
30036 1408 275 791 Mediacom Communications Corp
7018 1233 10071 818 AT&T Services, Inc.
7011 1191 316 697 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 1513 544 16 Corbina telecom
12479 814 752 92 France Telecom Espana SA
34984 735 189 177 BILISIM TELEKOM
6830 715 2310 446 UPC Broadband
31148 702 37 9 FreeNet ISP
20940 696 230 557 Akamai Technologies European
2118 664 97 14 EUnet/RELCOM Autonomous Syste
13188 640 100 9 Ukraine
8551 599 364 61 Bezeq International
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 2036 350 210 Types of queries are: POCs, o
28573 2009 1228 57 Types of queries are: POCs, o
6503 1520 419 69 Axtel, S.A.B. de C.V.
7303 1458 934 196 Telecom Argentina S.A.
8151 1337 3053 342 Uninet S.A. de C.V.
6458 882 81 15 Telgua
27947 696 75 90 Telconet S.A
11172 645 107 75 Alestra, S. de R.L. de C.V.
3816 606 256 87 Types of queries are: POCs, o
22047 583 326 15 Types of queries are: POCs, o

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
8452 995 958 13 TEDATA
24863 864 274 32 LINKdotNET AS number
6713 509 650 19 Itissalat Al-MAGHRIB
36998 483 48 3 MOBITEL
24835 286 80 8 RAYA Telecom - Egypt
3741 263 905 224 The Internet Solution
33776 227 12 18 Starcomms Nigeria Limited
12258 197 28 62 Vodacom Internet Company
29975 191 667 21 Vodacom
15706 177 32 6 Sudatel Internet Exchange Aut

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 3440 986 155 Windstream Communications Inc
6389 3381 3773 193 BellSouth.net Inc.
17974 2286 702 54 PT Telekomunikasi Indonesia
18566 2089 382 181 Covad Communications Co.
10620 2036 350 210 Types of queries are: POCs, o
4766 2024 11112 784 Korea Telecom (KIX)
28573 2009 1228 57 Types of queries are: POCs, o
1785 1941 681 131 PaeTec Communications, Inc.
22773 1697 2914 125 Cox Communications Inc.
7545 1693 301 88 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 3381 3188 BellSouth.net Inc.
17974 2286 2232 PT Telekomunikasi Indonesia
28573 2009 1952 Types of queries are: POCs, o
18566 2089 1908 Covad Communications Co.
10620 2036 1826 Types of queries are: POCs, o
1785 1941 1810 PaeTec Communications, Inc.
7545 1693 1605 TPG Internet Pty Ltd
22773 1697 1572 Cox Communications Inc.
8402 1513 1497 Corbina telecom
6503 1520 1451 Axtel, S.A.B. de C.V.

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

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

Bad AS Designation Network Transit AS Description
59407 UNALLOCATED 5.134.16.0/21 51167 Giga-Hosting GmbH
59457 UNALLOCATED 5.149.64.0/24 35567 DASTO semtel d.o.o.
59457 UNALLOCATED 5.149.65.0/24 35567 DASTO semtel d.o.o.
59457 UNALLOCATED 5.149.67.0/24 35567 DASTO semtel d.o.o.
59457 UNALLOCATED 5.149.68.0/24 35567 DASTO semtel d.o.o.
59457 UNALLOCATED 5.149.71.0/24 35567 DASTO semtel d.o.o.
59458 UNALLOCATED 5.149.96.0/21 50597 ScopeSky Communicati
59458 UNALLOCATED 5.149.104.0/22 50597 ScopeSky Communicati
59473 UNALLOCATED 5.149.152.0/22 44843 AmsterdamTelecom Ltd
59473 UNALLOCATED 5.149.156.0/23 44843 AmsterdamTelecom Ltd

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
169.254.0.0/16 65333 Internet Assigned Numbers Aut
172.16.0.0/12 65333 Internet Assigned Numbers Aut
192.0.2.0/24 65333 Internet Assigned Numbers Aut
192.168.0.0/16 0 *
198.18.0.0/15 65333 Internet Assigned Numbers Aut

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
41.222.80.0/21 37110 Moztel LDA

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 /8:20 /9:12 /10:29 /11:82 /12:236
/13:472 /14:846 /15:1524 /16:12303 /17:6375 /18:10638
/19:20794 /20:29847 /21:31452 /22:41015 /23:39249 /24:216957
/25:11 /26:22 /27:19 /28:148 /29:150 /30:84
/31:0 /32:139

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

ASN No of nets Total ann. Description
7029 2799 3440 Windstream Communications Inc
18566 2039 2089 Covad Communications Co.
6389 1864 3381 BellSouth.net Inc.
30036 1343 1408 Mediacom Communications Corp
8402 1213 1513 Corbina telecom
11492 1154 1191 CABLE ONE, INC.
22773 1121 1697 Cox Communications Inc.
1785 1049 1941 PaeTec Communications, Inc.
6503 1047 1520 Axtel, S.A.B. de C.V.
7011 930 1191 Frontier Communications of Am

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

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

1:517 2:671 3:1 4:13 5:297 6:3
8:437 12:1974 13:1 14:623 15:11 16:3
17:6 20:24 23:205 24:1795 27:1309 31:1043
32:51 33:2 34:2 36:7 37:682 38:814
39:1 40:134 41:2836 42:158 44:3 46:1544
47:2 49:428 50:568 52:13 54:14 55:9
56:1 57:38 58:925 59:507 60:232 61:1177
62:936 63:2021 64:4236 65:2251 66:4515 67:2035
68:1155 69:3202 70:986 71:520 72:1872 74:2606
75:488 76:331 77:931 78:928 79:491 80:1230
81:942 82:647 83:541 84:514 85:1159 86:471
87:936 88:353 89:1791 90:302 91:5074 92:588
93:1312 94:1570 95:1260 96:400 97:318 98:897
99:36 100:22 101:251 103:1315 105:464 106:115
107:189 108:395 109:1482 110:783 111:943 112:428
113:667 114:677 115:848 116:895 117:717 118:944
119:1176 120:350 121:679 122:1636 123:1160 124:1311
125:1262 128:520 129:177 130:254 131:634 132:292
133:22 134:234 135:61 136:214 137:237 138:342
139:181 140:468 141:255 142:431 143:369 144:497
145:78 146:502 147:303 148:749 149:319 150:146
151:186 152:471 153:175 154:18 155:412 156:219
157:336 158:191 159:550 160:346 161:281 162:383
163:178 164:665 165:405 166:579 167:535 168:957
169:125 170:898 171:147 172:5 173:1740 174:627
175:425 176:567 177:991 178:1667 180:1326 181:114
182:1020 183:231 184:569 186:2040 187:1115 188:1389
189:1586 190:6135 192:5977 193:5442 194:4197 195:3243
196:1209 197:159 198:3645 199:4895 200:5874 201:1966
202:8460 203:8589 204:4293 205:2510 206:2701 207:2761
208:4043 209:3612 210:2692 211:1541 212:2008 213:1804
214:852 215:70 216:5065 217:1555 218:548 219:298
220:1235 221:550 222:301 223:338

End of report
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