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, June 30, 2013

[bgp-stats] Routing Table Report - London view

* BGP Routing Table Analysis Reports *
Routing Table Report 08:00 +10GMT Mon 01 Jul, 2013

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

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

BGP routing table entries examined: 450763
Prefixes after maximum aggregation: 183982
Deaggregation factor: 2.45
Unique aggregates announced to Internet: 226755
Total ASes present in the Internet Routing Table: 40481
Prefixes per ASN: 11.14
Origin-only ASes present in the Internet Routing Table: 34767
Origin ASes announcing only one prefix: 16181
Transit ASes present in the Internet Routing Table: 5706
Transit-only ASes present in the Internet Routing Table: 126
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: 359736
Unregistered ASNs in the Routing Table: 30522
Number of 32-bit ASNs allocated by the RIRs: 4836
Number of 32-bit ASNs visible in the Routing Table: 8
Prefixes from 32-bit ASNs in the Routing Table: 10958
Special use prefixes present in the Routing Table: 30
Prefixes being announced from unallocated address space: 226
Number of addresses announced to Internet: 2645948928
Equivalent to 157 /8s, 181 /16s and 250 /24s
Percentage of available address space announced: 71.5
Percentage of allocated address space announced: 71.5
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 94.7
Total number of prefixes smaller than registry allocations: 156400

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

Prefixes being announced by APNIC Region ASes: 104370
Total APNIC prefixes after maximum aggregation: 32273
APNIC Deaggregation factor: 3.23
Prefixes being announced from the APNIC address blocks: 106805
Unique aggregates announced from the APNIC address blocks: 45573
APNIC Region origin ASes present in the Internet Routing Table: 4802
APNIC Prefixes per ASN: 22.24
APNIC Region origin ASes announcing only one prefix: 1235
APNIC Region transit ASes present in the Internet Routing Table: 795
Average APNIC Region AS path length visible: 3.8
Max APNIC Region AS path length visible: 19
Number of APNIC region 32-bit ASNs visible in the Routing Table: 1
Number of APNIC addresses announced to Internet: 722702336
Equivalent to 43 /8s, 19 /16s and 144 /24s
Percentage of available APNIC address space announced: 84.5

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: 157473
Total ARIN prefixes after maximum aggregation: 79855
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 158198
Unique aggregates announced from the ARIN address blocks: 73785
ARIN Region origin ASes present in the Internet Routing Table: 15690
ARIN Prefixes per ASN: 10.08
ARIN Region origin ASes announcing only one prefix: 6001
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: 1064889344
Equivalent to 63 /8s, 120 /16s and 236 /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, 62464-63487, 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: 118050
Total RIPE prefixes after maximum aggregation: 60102
RIPE Deaggregation factor: 1.96
Prefixes being announced from the RIPE address blocks: 121450
Unique aggregates announced from the RIPE address blocks: 78443
RIPE Region origin ASes present in the Internet Routing Table: 17230
RIPE Prefixes per ASN: 7.05
RIPE Region origin ASes announcing only one prefix: 8175
RIPE Region transit ASes present in the Internet Routing Table: 2785
Average RIPE Region AS path length visible: 3.5
Max RIPE Region AS path length visible: 21
Number of RIPE region 32-bit ASNs visible in the Routing Table: 1
Number of RIPE addresses announced to Internet: 656641280
Equivalent to 39 /8s, 35 /16s and 141 /24s
Percentage of available RIPE address space announced: 95.5

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: 48218
Total LACNIC prefixes after maximum aggregation: 9193
LACNIC Deaggregation factor: 5.25
Prefixes being announced from the LACNIC address blocks: 52519
Unique aggregates announced from the LACNIC address blocks: 24767
LACNIC Region origin ASes present in the Internet Routing Table: 1953
LACNIC Prefixes per ASN: 26.89
LACNIC Region origin ASes announcing only one prefix: 582
LACNIC Region transit ASes present in the Internet Routing Table: 344
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: 132793344
Equivalent to 7 /8s, 234 /16s and 68 /24s
Percentage of available LACNIC address space announced: 79.2

LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
61440-61951, 262144-263679 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: 10959
Total AfriNIC prefixes after maximum aggregation: 2518
AfriNIC Deaggregation factor: 4.35
Prefixes being announced from the AfriNIC address blocks: 11564
Unique aggregates announced from the AfriNIC address blocks: 3976
AfriNIC Region origin ASes present in the Internet Routing Table: 644
AfriNIC Prefixes per ASN: 17.96
AfriNIC Region origin ASes announcing only one prefix: 188
AfriNIC Region transit ASes present in the Internet Routing Table: 130
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: 1
Number of AfriNIC addresses announced to Internet: 46350080
Equivalent to 2 /8s, 195 /16s and 63 /24s
Percentage of available AfriNIC address space announced: 46.0

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 2559 855 92 >>UNKNOWN<<
4766 2129 11553 623 >>UNKNOWN<<
7545 2011 320 109 TPG Telecom Limited
4755 1775 394 204 >>UNKNOWN<<
9829 1519 1205 40 >>UNKNOWN<<
9583 1281 98 536 >>UNKNOWN<<
7552 1148 1080 13 >>UNKNOWN<<
9498 1147 309 72 BHARTI Airtel Ltd.
24560 1080 394 164 >>UNKNOWN<<
4808 1059 2011 305 >>UNKNOWN<<

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 2991 3691 70 BellSouth.net Inc.
18566 2063 382 183 Covad Communications Co.
1785 1995 678 126 >>UNKNOWN<<
22773 1986 2927 123 >>UNKNOWN<<
20115 1664 1616 616 Charter Communications
4323 1624 1154 404 >>UNKNOWN<<
701 1529 11126 798 >>UNKNOWN<<
30036 1338 300 645 >>UNKNOWN<<
7018 1319 11076 842 >>UNKNOWN<<
11492 1222 218 359 >>UNKNOWN<<

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 1636 544 16 >>UNKNOWN<<
34984 1276 241 215 >>UNKNOWN<<
2118 1085 97 13 >>UNKNOWN<<
20940 901 320 709 >>UNKNOWN<<
8551 825 370 44 Bezeqint Internet Backbone
13188 825 98 79 >>UNKNOWN<<
31148 805 40 25 >>UNKNOWN<<
6830 767 2376 441 >>UNKNOWN<<
12479 673 789 57 >>UNKNOWN<<
34744 658 171 76 S.C. GVM SISTEM 2003 S.R.L.

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 2903 1570 105 >>UNKNOWN<<
10620 2677 420 200 >>UNKNOWN<<
7303 1731 1155 220 >>UNKNOWN<<
8151 1247 2723 384 >>UNKNOWN<<
18881 1070 844 20 >>UNKNOWN<<
6503 867 434 65 Axtel, S.A.B. de C.V.
3816 721 307 87 >>UNKNOWN<<
27947 700 94 93 >>UNKNOWN<<
7738 698 1370 35 >>UNKNOWN<<
11172 619 104 67 >>UNKNOWN<<

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 1005 80 4 >>UNKNOWN<<
24863 854 274 30 >>UNKNOWN<<
6713 542 617 25 >>UNKNOWN<<
8452 469 956 9 >>UNKNOWN<<
24835 344 80 8 >>UNKNOWN<<
3741 259 922 218 >>UNKNOWN<<
15706 220 32 6 >>UNKNOWN<<
29571 219 17 12 >>UNKNOWN<<
37054 211 11 5 >>UNKNOWN<<
36992 201 527 21 >>UNKNOWN<<

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 2991 3691 70 BellSouth.net Inc.
28573 2903 1570 105 >>UNKNOWN<<
10620 2677 420 200 >>UNKNOWN<<
17974 2559 855 92 >>UNKNOWN<<
4766 2129 11553 623 >>UNKNOWN<<
18566 2063 382 183 Covad Communications Co.
7545 2011 320 109 TPG Telecom Limited
1785 1995 678 126 >>UNKNOWN<<
22773 1986 2927 123 >>UNKNOWN<<
4755 1775 394 204 >>UNKNOWN<<

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 2903 2798 >>UNKNOWN<<
10620 2677 2477 >>UNKNOWN<<
17974 2559 2467 >>UNKNOWN<<
7545 2011 1902 TPG Telecom Limited
18566 2063 1880 Covad Communications Co.
1785 1995 1869 >>UNKNOWN<<
22773 1986 1863 >>UNKNOWN<<
8402 1636 1620 >>UNKNOWN<<
4755 1775 1571 >>UNKNOWN<<
7303 1731 1511 >>UNKNOWN<<

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

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

Bad AS Designation Network Transit AS Description
23599 UNALLOCATED 1.18.122.0/24 1280 >>UNKNOWN<<
23599 UNALLOCATED 1.18.125.0/24 9318 >>UNKNOWN<<
23596 UNALLOCATED 1.18.128.0/24 24151 China Internet Netwo
56120 UNALLOCATED 1.20.0.0/24 9737 TOT Public Company L
56120 UNALLOCATED 1.20.0.0/17 9737 TOT Public Company L
56120 UNALLOCATED 1.20.1.0/24 9737 TOT Public Company L
56120 UNALLOCATED 1.20.2.0/24 9737 TOT Public Company L
56120 UNALLOCATED 1.20.3.0/24 9737 TOT Public Company L
56120 UNALLOCATED 1.20.125.0/24 9737 TOT Public Company L
56120 UNALLOCATED 1.20.126.0/24 9737 TOT Public Company L

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 >>UNKNOWN<<
128.0.16.0/21 43568 Romerike Bredband AS
128.0.24.0/21 41794 Sibirskie Seti Ltd.
128.0.46.0/23 39743 Voxility S.R.L.
128.0.53.0/24 60993 >>UNKNOWN<<
128.0.54.0/24 60972 >>UNKNOWN<<
128.0.55.0/24 48571 efectRO SRL
128.0.57.0/24 60993 >>UNKNOWN<<
128.0.58.0/23 9050 ROMTELECOM S.A

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

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

Network Origin AS Description
62.61.220.0/24 24974 >>UNKNOWN<<
62.61.221.0/24 24974 >>UNKNOWN<<
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 /11:92 /12:251
/13:481 /14:895 /15:1595 /16:12667 /17:6642 /18:11040
/19:22401 /20:32067 /21:34382 /22:47508 /23:41857 /24:238228
/25:7 /26:11 /27:12 /28:130 /29:195 /30:111
/31:0 /32:132

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

ASN No of nets Total ann. Description
18566 2014 2063 Covad Communications Co.
6389 1717 2991 BellSouth.net Inc.
8402 1333 1636 >>UNKNOWN<<
22773 1293 1986 >>UNKNOWN<<
30036 1206 1338 >>UNKNOWN<<
11492 1183 1222 >>UNKNOWN<<
1785 1063 1995 >>UNKNOWN<<
6983 1015 1145 ITC^Deltacom
36998 999 1005 >>UNKNOWN<<
10620 996 2677 >>UNKNOWN<<

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

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

1:798 2:801 3:3 4:16 5:813 6:16
8:556 12:1918 13:3 14:837 15:11 16:3
17:10 20:17 23:293 24:1764 27:1490 31:1319
32:38 33:2 34:5 36:47 37:1870 38:869
39:2 40:170 41:2848 42:197 44:7 46:1900
47:2 49:661 50:733 52:12 54:35 55:5
57:30 58:1078 59:614 60:318 61:1461 62:1136
63:2025 64:4329 65:2151 66:4168 67:2039 68:1079
69:3263 70:836 71:494 72:1923 74:2456 75:324
76:302 77:1084 78:1061 79:615 80:1265 81:1019
82:629 83:594 84:585 85:1180 86:457 87:1013
88:538 89:1771 90:148 91:5528 92:607 93:1731
94:1862 95:1649 96:524 97:345 98:1014 99:39
100:29 101:325 103:2875 105:412 106:138 107:207
108:493 109:1833 110:901 111:1048 112:547 113:816
114:690 115:1040 116:941 117:786 118:1100 119:1267
120:376 121:832 122:1761 123:1217 124:1340 125:1319
128:604 129:203 130:296 131:654 132:353 133:155
134:258 135:68 136:222 137:238 138:340 139:185
140:177 141:315 142:522 143:368 144:493 145:94
146:499 147:370 148:652 149:346 150:148 151:520
152:419 153:189 154:24 155:411 156:262 157:351
158:280 159:632 160:345 161:427 162:465 163:227
164:600 165:492 166:253 167:596 168:1038 169:128
170:1056 171:180 172:21 173:1590 174:544 175:455
176:991 177:2099 178:1864 179:50 180:1453 181:481
182:1242 183:388 184:666 185:575 186:2224 187:1297
188:2045 189:1277 190:6705 192:6717 193:5669 194:4613
195:3458 196:1370 197:945 198:4446 199:5304 200:5976
201:2195 202:8632 203:8794 204:4439 205:2535 206:2713
207:2779 208:4029 209:3610 210:2816 211:1510 212:2215
213:1994 214:903 215:99 216:5221 217:1628 218:606
219:340 220:1278 221:557 222:323 223:444

End of report
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