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, August 12, 2012

[bgp-stats] Routing Table Report - London view

* BGP Routing Table Analysis Reports *
Routing Table Report 08:00 +10GMT Mon 13 Aug, 2012

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

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

BGP routing table entries examined: 413172
Prefixes after maximum aggregation: 174937
Deaggregation factor: 2.36
Unique aggregates announced to Internet: 203472
Total ASes present in the Internet Routing Table: 38815
Prefixes per ASN: 10.64
Origin-only ASes present in the Internet Routing Table: 33426
Origin ASes announcing only one prefix: 15713
Transit ASes present in the Internet Routing Table: 5389
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: 24
Max AS path prepend of ASN ( 36992) 22
Prefixes from unregistered ASNs in the Routing Table: 1132
Unregistered ASNs in the Routing Table: 215
Number of 32-bit ASNs allocated by the RIRs: 3108
Number of 32-bit ASNs visible in the Routing Table: 0
Prefixes from 32-bit ASNs in the Routing Table: 6961
Special use prefixes present in the Routing Table: 6
Prefixes being announced from unallocated address space: 171
Number of addresses announced to Internet: 2607743744
Equivalent to 155 /8s, 111 /16s and 3 /24s
Percentage of available address space announced: 70.4
Percentage of allocated address space announced: 70.4
Percentage of available address space allocated: 99.9
Percentage of address space in use by end-sites: 93.2
Total number of prefixes smaller than registry allocations: 143586

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

Prefixes being announced by APNIC Region ASes: 95866
Total APNIC prefixes after maximum aggregation: 31125
APNIC Deaggregation factor: 3.08
Prefixes being announced from the APNIC address blocks: 96965
Unique aggregates announced from the APNIC address blocks: 41855
APNIC Region origin ASes present in the Internet Routing Table: 4612
APNIC Prefixes per ASN: 21.02
APNIC Region origin ASes announcing only one prefix: 1240
APNIC Region transit ASes present in the Internet Routing Table: 717
Average APNIC Region AS path length visible: 4.0
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: 705327104
Equivalent to 42 /8s, 10 /16s and 112 /24s
Percentage of available APNIC address space announced: 82.4

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: 152280
Total ARIN prefixes after maximum aggregation: 77446
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 153264
Unique aggregates announced from the ARIN address blocks: 68650
ARIN Region origin ASes present in the Internet Routing Table: 15157
ARIN Prefixes per ASN: 10.11
ARIN Region origin ASes announcing only one prefix: 5754
ARIN Region transit ASes present in the Internet Routing Table: 1524
Average ARIN Region AS path length visible: 3.3
Max ARIN Region AS path length visible: 18
Number of ARIN region 32-bit ASNs visible in the Routing Table: 0
Number of ARIN addresses announced to Internet: 1083707648
Equivalent to 64 /8s, 152 /16s and 17 /24s
Percentage of available ARIN address space announced: 57.3

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: 105511
Total RIPE prefixes after maximum aggregation: 55885
RIPE Deaggregation factor: 1.89
Prefixes being announced from the RIPE address blocks: 107723
Unique aggregates announced from the RIPE address blocks: 67399
RIPE Region origin ASes present in the Internet Routing Table: 16731
RIPE Prefixes per ASN: 6.44
RIPE Region origin ASes announcing only one prefix: 8122
RIPE Region transit ASes present in the Internet Routing Table: 2656
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: 641248000
Equivalent to 38 /8s, 56 /16s and 171 /24s
Percentage of available RIPE address space announced: 93.2

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: 42187
Total LACNIC prefixes after maximum aggregation: 8239
LACNIC Deaggregation factor: 5.12
Prefixes being announced from the LACNIC address blocks: 44949
Unique aggregates announced from the LACNIC address blocks: 22040
LACNIC Region origin ASes present in the Internet Routing Table: 1609
LACNIC Prefixes per ASN: 27.94
LACNIC Region origin ASes announcing only one prefix: 426
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: 21
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 0
Number of LACNIC addresses announced to Internet: 113388032
Equivalent to 6 /8s, 194 /16s and 42 /24s
Percentage of available LACNIC address space announced: 67.6

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: 9644
Total AfriNIC prefixes after maximum aggregation: 2188
AfriNIC Deaggregation factor: 4.41
Prefixes being announced from the AfriNIC address blocks: 10099
Unique aggregates announced from the AfriNIC address blocks: 3384
AfriNIC Region origin ASes present in the Internet Routing Table: 554
AfriNIC Prefixes per ASN: 18.23
AfriNIC Region origin ASes announcing only one prefix: 171
AfriNIC Region transit ASes present in the Internet Routing Table: 119
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: 41490176
Equivalent to 2 /8s, 121 /16s and 23 /24s
Percentage of available AfriNIC address space announced: 41.2

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 2324 702 54 PT Telekomunikasi Indonesia
4766 2019 11106 777 Korea Telecom (KIX)
7545 1708 301 87 TPG Internet Pty Ltd
4755 1584 385 156 TATA Communications formerly
9829 1307 1084 31 National Internet Backbone
9583 1206 90 534 Sify Limited
7552 1085 1062 11 Vietel Corporation
24560 1038 385 165 Bharti Airtel Ltd., Telemedia
9498 997 294 74 BHARTI Airtel Ltd.
4808 967 1940 289 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 3439 990 156 Windstream Communications Inc
6389 3341 3773 193 BellSouth.net Inc.
18566 2089 382 180 Covad Communications Co.
1785 1937 680 129 PaeTec Communications, Inc.
22773 1699 2914 125 Cox Communications Inc.
20115 1646 1572 611 Charter Communications
4323 1572 1043 385 tw telecom holdings, inc.
30036 1436 280 785 Mediacom Communications Corp
7018 1243 10055 813 AT&T Services, Inc.
11492 1191 216 351 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 1414 544 16 Corbina telecom
12479 824 762 86 France Telecom Espana SA
34984 744 189 177 BILISIM TELEKOM
6830 716 2311 447 UPC Broadband
31148 699 37 9 FreeNet ISP
20940 693 229 551 Akamai Technologies European
2118 685 97 14 EUnet/RELCOM Autonomous Syste
13188 657 100 9 Ukraine
58113 624 70 370 LIR DATACENTER TELECOM SRL
8551 603 364 61 Bezeq International

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 2077 353 220 Types of queries are: POCs, o
28573 2037 1232 55 Types of queries are: POCs, o
7303 1560 1032 202 Telecom Argentina S.A.
6503 1520 419 69 Axtel, S.A.B. de C.V.
8151 1329 3025 342 Uninet S.A. de C.V.
6458 881 81 15 Telgua
3816 600 253 95 Types of queries are: POCs, o
11172 591 101 70 Alestra, S. de R.L. de C.V.
22047 580 326 15 Types of queries are: POCs, o
14420 569 81 100 CORPORACION NACIONAL DE TELEC

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 913 958 13 TEDATA
24863 865 274 33 LINKdotNET AS number
36998 532 48 3 MOBITEL
6713 515 650 19 Itissalat Al-MAGHRIB
24835 286 80 8 RAYA Telecom - Egypt
3741 263 905 224 The Internet Solution
33776 227 12 19 Starcomms Nigeria Limited
12258 195 28 62 Vodacom Internet Company
15706 193 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 3439 990 156 Windstream Communications Inc
6389 3341 3773 193 BellSouth.net Inc.
17974 2324 702 54 PT Telekomunikasi Indonesia
18566 2089 382 180 Covad Communications Co.
10620 2077 353 220 Types of queries are: POCs, o
28573 2037 1232 55 Types of queries are: POCs, o
4766 2019 11106 777 Korea Telecom (KIX)
1785 1937 680 129 PaeTec Communications, Inc.
7545 1708 301 87 TPG Internet Pty Ltd
22773 1699 2914 125 Cox 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
6389 3341 3148 BellSouth.net Inc.
17974 2324 2270 PT Telekomunikasi Indonesia
28573 2037 1982 Types of queries are: POCs, o
18566 2089 1909 Covad Communications Co.
10620 2077 1857 Types of queries are: POCs, o
1785 1937 1808 PaeTec Communications, Inc.
7545 1708 1621 TPG Internet Pty Ltd
22773 1699 1574 Cox Communications Inc.
6503 1520 1451 Axtel, S.A.B. de C.V.
4755 1584 1428 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
59414 UNALLOCATED 5.102.144.0/21 15576 NTS workspace AG
59395 UNALLOCATED 5.133.16.0/21 12658 Dexterity Networks L
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 5.149.66.0/24 35567 DASTO semtel d.o.o.
59457 UNALLOCATED 5.149.67.0/24 43179 Team Consulting d.o.
59457 UNALLOCATED 5.149.71.0/24 35567 DASTO semtel d.o.o.
59457 UNALLOCATED 5.149.74.0/23 35567 DASTO semtel d.o.o.
59457 UNALLOCATED 5.149.94.0/24 43179 Team Consulting d.o.

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
41.207.224.0/23 36898 UniNet Communications

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 /8:21 /9:14 /10:30 /11:84 /12:237
/13:471 /14:847 /15:1527 /16:12324 /17:6390 /18:10656
/19:20807 /20:29964 /21:31544 /22:41290 /23:39334 /24:217063
/25:11 /26:22 /27:18 /28:143 /29:155 /30:84
/31:0 /32:136

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

ASN No of nets Total ann. Description
7029 2801 3439 Windstream Communications Inc
18566 2039 2089 Covad Communications Co.
6389 1834 3341 BellSouth.net Inc.
30036 1372 1436 Mediacom Communications Corp
11492 1154 1191 CABLE ONE, INC.
8402 1151 1414 Corbina telecom
22773 1123 1699 Cox Communications Inc.
6503 1047 1520 Axtel, S.A.B. de C.V.
1785 1039 1937 PaeTec Communications, Inc.
7011 929 1190 Frontier Communications of Am

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

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

1:504 2:667 3:1 4:13 5:336 6:3
8:436 12:1979 13:1 14:617 15:11 16:3
17:6 20:26 23:199 24:1802 27:1316 31:1040
32:51 33:2 34:2 36:7 37:723 38:811
39:1 40:134 41:2878 42:154 44:3 46:1558
47:2 49:432 50:576 52:13 54:14 55:3
57:38 58:918 59:513 60:234 61:1176 62:948
63:2016 64:4235 65:2243 66:4526 67:2056 68:1154
69:3207 70:988 71:518 72:1868 74:2604 75:489
76:331 77:947 78:902 79:498 80:1239 81:952
82:643 83:541 84:509 85:1136 86:476 87:936
88:337 89:1801 90:303 91:5096 92:591 93:1325
94:1586 95:1253 96:410 97:317 98:899 99:36
100:22 101:243 103:1270 105:512 106:111 107:193
108:406 109:1500 110:791 111:927 112:422 113:665
114:636 115:834 116:897 117:705 118:920 119:1176
120:344 121:677 122:1598 123:1166 124:1299 125:1265
128:483 129:177 130:256 131:628 132:293 133:22
134:234 135:61 136:214 137:235 138:347 139:182
140:471 141:266 142:433 143:365 144:490 145:78
146:504 147:263 148:750 149:318 150:146 151:186
152:453 153:175 154:19 155:423 156:219 157:335
158:189 159:557 160:345 161:385 162:390 163:178
164:674 165:407 166:572 167:531 168:956 169:125
170:909 171:145 172:5 173:1738 174:624 175:419
176:589 177:974 178:1682 180:1315 181:117 182:1015
183:232 184:574 186:1995 187:1124 188:1429 189:1579
190:6119 192:5964 193:5456 194:4230 195:3235 196:1236
197:200 198:3653 199:4860 200:5861 201:1938 202:8390
203:8526 204:4321 205:2512 206:2727 207:2724 208:4043
209:3614 210:2694 211:1555 212:2027 213:1804 214:870
215:85 216:5085 217:1545 218:548 219:299 220:1234
221:553 222:300 223:357

End of report
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