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.

Monday, August 5, 2013

[bgp-stats] Routing Table Report - London view

* BGP Routing Table Analysis Reports *
Routing Table Report 08:00 +10GMT Tue 06 Aug, 2013

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

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

BGP routing table entries examined: 456175
Prefixes after maximum aggregation: 184987
Deaggregation factor: 2.47
Unique aggregates announced to Internet: 228540
Total ASes present in the Internet Routing Table: 40672
Prefixes per ASN: 11.22
Origin-only ASes present in the Internet Routing Table: 34956
Origin ASes announcing only one prefix: 16230
Transit ASes present in the Internet Routing Table: 5709
Transit-only ASes present in the Internet Routing Table: 136
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: 298964
Unregistered ASNs in the Routing Table: 24524
Number of 32-bit ASNs allocated by the RIRs: 4926
Number of 32-bit ASNs visible in the Routing Table: 7
Prefixes from 32-bit ASNs in the Routing Table: 11413
Special use prefixes present in the Routing Table: 35
Prefixes being announced from unallocated address space: 284
Number of addresses announced to Internet: 2652336128
Equivalent to 158 /8s, 23 /16s and 112 /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: 94.8
Total number of prefixes smaller than registry allocations: 158784

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

Prefixes being announced by APNIC Region ASes: 105715
Total APNIC prefixes after maximum aggregation: 32596
APNIC Deaggregation factor: 3.24
Prefixes being announced from the APNIC address blocks: 108057
Unique aggregates announced from the APNIC address blocks: 46108
APNIC Region origin ASes present in the Internet Routing Table: 4825
APNIC Prefixes per ASN: 22.40
APNIC Region origin ASes announcing only one prefix: 1249
APNIC Region transit ASes present in the Internet Routing Table: 796
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: 724263680
Equivalent to 43 /8s, 43 /16s and 99 /24s
Percentage of available APNIC address space announced: 84.6

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: 158653
Total ARIN prefixes after maximum aggregation: 80149
ARIN Deaggregation factor: 1.98
Prefixes being announced from the ARIN address blocks: 159288
Unique aggregates announced from the ARIN address blocks: 74193
ARIN Region origin ASes present in the Internet Routing Table: 15733
ARIN Prefixes per ASN: 10.12
ARIN Region origin ASes announcing only one prefix: 5991
ARIN Region transit ASes present in the Internet Routing Table: 1591
Average ARIN Region AS path length visible: 3.3
Max ARIN Region AS path length visible: 20
Number of ARIN region 32-bit ASNs visible in the Routing Table: 2
Number of ARIN addresses announced to Internet: 1067709184
Equivalent to 63 /8s, 163 /16s and 243 /24s
Percentage of available ARIN address space announced: 56.5

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, 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: 118724
Total RIPE prefixes after maximum aggregation: 60293
RIPE Deaggregation factor: 1.97
Prefixes being announced from the RIPE address blocks: 122514
Unique aggregates announced from the RIPE address blocks: 78499
RIPE Region origin ASes present in the Internet Routing Table: 17313
RIPE Prefixes per ASN: 7.08
RIPE Region origin ASes announcing only one prefix: 8221
RIPE Region transit ASes present in the Internet Routing Table: 2778
Average RIPE Region AS path length visible: 3.5
Max RIPE Region AS path length visible: 24
Number of RIPE region 32-bit ASNs visible in the Routing Table: 1
Number of RIPE addresses announced to Internet: 656754944
Equivalent to 39 /8s, 37 /16s and 73 /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: 49139
Total LACNIC prefixes after maximum aggregation: 9374
LACNIC Deaggregation factor: 5.24
Prefixes being announced from the LACNIC address blocks: 53624
Unique aggregates announced from the LACNIC address blocks: 25522
LACNIC Region origin ASes present in the Internet Routing Table: 1981
LACNIC Prefixes per ASN: 27.07
LACNIC Region origin ASes announcing only one prefix: 579
LACNIC Region transit ASes present in the Internet Routing Table: 350
Average LACNIC Region AS path length visible: 4.2
Max LACNIC Region AS path length visible: 19
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 2
Number of LACNIC addresses announced to Internet: 134384384
Equivalent to 8 /8s, 2 /16s and 139 /24s
Percentage of available LACNIC address space announced: 80.1

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: 11814
Total AfriNIC prefixes after maximum aggregation: 2535
AfriNIC Deaggregation factor: 4.66
Prefixes being announced from the AfriNIC address blocks: 12407
Unique aggregates announced from the AfriNIC address blocks: 3952
AfriNIC Region origin ASes present in the Internet Routing Table: 650
AfriNIC Prefixes per ASN: 19.09
AfriNIC Region origin ASes announcing only one prefix: 190
AfriNIC Region transit ASes present in the Internet Routing Table: 126
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: 46604800
Equivalent to 2 /8s, 199 /16s and 34 /24s
Percentage of available AfriNIC address space announced: 46.3

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 2647 871 92 >>UNKNOWN<<
4766 2115 11553 618 Korea Telecom
7545 2030 320 111 TPG Telecom Limited
4755 1784 393 201 TATA Communications formerly
9829 1537 1221 45 >>UNKNOWN<<
9583 1222 92 507 >>UNKNOWN<<
9498 1177 309 71 BHARTI Airtel Ltd.
7552 1112 1080 13 >>UNKNOWN<<
24560 1087 394 164 >>UNKNOWN<<
4808 1072 2028 312 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
6389 2981 3689 63 BellSouth.net Inc.
18566 2063 382 183 Covad Communications Co.
1785 2005 679 125 >>UNKNOWN<<
22773 2002 2927 123 >>UNKNOWN<<
20115 1672 1624 623 Charter Communications
4323 1622 1122 409 >>UNKNOWN<<
701 1522 11104 801 >>UNKNOWN<<
30036 1356 307 653 >>UNKNOWN<<
7018 1328 11069 840 >>UNKNOWN<<
11492 1221 218 363 >>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 1646 544 16 >>UNKNOWN<<
34984 1291 241 215 >>UNKNOWN<<
2118 1156 97 13 >>UNKNOWN<<
31148 977 43 19 >>UNKNOWN<<
20940 956 341 741 >>UNKNOWN<<
6830 848 2371 431 >>UNKNOWN<<
13188 841 98 71 >>UNKNOWN<<
8551 823 370 45 Bezeqint Internet Backbone
12479 679 796 52 >>UNKNOWN<<
9116 553 326 34 >>UNKNOWN<<

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 2985 1591 110 >>UNKNOWN<<
10620 2652 421 228 >>UNKNOWN<<
7303 1729 1156 221 >>UNKNOWN<<
18881 1281 844 20 >>UNKNOWN<<
8151 1260 2757 386 >>UNKNOWN<<
6503 814 434 65 Axtel, S.A.B. de C.V.
27947 810 95 92 Telconet S.A
11830 749 364 15 >>UNKNOWN<<
3816 726 303 85 >>UNKNOWN<<
7738 698 1370 35 >>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 1861 112 5 MOBITEL
24863 875 274 30 >>UNKNOWN<<
6713 542 617 25 Itissalat Al-MAGHRIB
8452 435 956 9 >>UNKNOWN<<
24835 291 80 8 >>UNKNOWN<<
3741 258 921 217 >>UNKNOWN<<
15706 221 32 6 >>UNKNOWN<<
29571 220 17 12 >>UNKNOWN<<
36992 211 527 22 >>UNKNOWN<<
37054 210 11 4 Data Telecom Service

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
28573 2985 1591 110 >>UNKNOWN<<
6389 2981 3689 63 BellSouth.net Inc.
10620 2652 421 228 >>UNKNOWN<<
17974 2647 871 92 >>UNKNOWN<<
4766 2115 11553 618 Korea Telecom
18566 2063 382 183 Covad Communications Co.
7545 2030 320 111 TPG Telecom Limited
1785 2005 679 125 >>UNKNOWN<<
22773 2002 2927 123 >>UNKNOWN<<
36998 1861 112 5 MOBITEL

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 2981 2918 BellSouth.net Inc.
17974 2647 2555 >>UNKNOWN<<
10620 2652 2424 >>UNKNOWN<<
7545 2030 1919 TPG Telecom Limited
18566 2063 1880 Covad Communications Co.
1785 2005 1880 >>UNKNOWN<<
22773 2002 1879 >>UNKNOWN<<
36998 1861 1856 MOBITEL
8402 1646 1630 >>UNKNOWN<<
4755 1784 1583 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
17443 UNALLOCATED 1.186.192.0/24 9498 BHARTI Airtel Ltd.
17443 UNALLOCATED 1.186.193.0/24 9498 BHARTI Airtel Ltd.
17443 UNALLOCATED 1.186.194.0/24 9498 BHARTI Airtel Ltd.
17443 UNALLOCATED 1.186.195.0/24 9498 BHARTI Airtel Ltd.
45271 UNALLOCATED 1.187.0.0/19 55644 >>UNKNOWN<<
45271 UNALLOCATED 1.187.32.0/19 55644 >>UNKNOWN<<
45271 UNALLOCATED 1.187.64.0/20 4755 TATA Communications
45271 UNALLOCATED 1.187.80.0/20 9498 BHARTI Airtel Ltd.
45271 UNALLOCATED 1.187.96.0/20 17917 >>UNKNOWN<<
45271 UNALLOCATED 1.187.112.0/20 9498 BHARTI Airtel 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
128.0.0.0/24 2541 >>UNKNOWN<<
128.0.16.0/21 43568 Romerike Bredband AS
128.0.24.0/21 41794 Sibirskie Seti Ltd.
128.0.40.0/24 60449 >>UNKNOWN<<
128.0.42.0/24 60619 >>UNKNOWN<<
128.0.43.0/24 60619 >>UNKNOWN<<
128.0.45.0/24 60657 >>UNKNOWN<<
128.0.46.0/23 39743 Voxility S.R.L.
128.0.53.0/24 60993 >>UNKNOWN<<

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<<
62.182.96.0/23 15830 >>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.

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 /12:250
/13:478 /14:902 /15:1601 /16:12700 /17:6650 /18:11037
/19:22536 /20:32258 /21:34578 /22:48210 /23:42212 /24:242012
/25:8 /26:11 /27:10 /28:130 /29:199 /30:115
/31:0 /32:127

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

ASN No of nets Total ann. Description
18566 2014 2063 Covad Communications Co.
36998 1826 1861 MOBITEL
6389 1715 2981 BellSouth.net Inc.
8402 1353 1646 >>UNKNOWN<<
22773 1303 2002 >>UNKNOWN<<
30036 1217 1356 >>UNKNOWN<<
11492 1182 1221 >>UNKNOWN<<
1785 1078 2005 >>UNKNOWN<<
6983 1020 1147 ITC^Deltacom
10620 987 2652 >>UNKNOWN<<

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

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

1:820 2:764 3:3 4:16 5:910 6:17
8:574 12:1908 13:2 14:839 15:11 16:2
17:10 18:19 20:17 23:298 24:1772 27:1527
31:1363 32:40 33:2 34:5 36:71 37:1849
38:885 39:2 40:175 41:3374 42:232 44:7
46:1950 47:3 49:660 50:806 52:12 54:37
55:7 57:29 58:1086 59:610 60:329 61:1484
62:1181 63:2001 64:4335 65:2144 66:4188 67:2025
68:1092 69:3281 70:800 71:488 72:1913 74:2513
75:324 76:302 77:1100 78:1045 79:609 80:1286
81:1013 82:651 83:583 84:579 85:1236 86:463
87:1020 88:533 89:1809 90:152 91:5531 92:623
93:1687 94:1936 95:1641 96:591 97:344 98:1027
99:40 100:28 101:342 103:3068 105:523 106:139
107:208 108:501 109:1858 110:937 111:1073 112:566
113:811 114:686 115:1057 116:941 117:790 118:1119
119:1267 120:349 121:850 122:1764 123:1239 124:1336
125:1395 128:597 129:198 130:296 131:660 132:353
133:160 134:261 135:72 136:258 137:234 138:344
139:186 140:174 141:307 142:514 143:399 144:531
145:92 146:524 147:417 148:652 149:350 150:150
151:585 152:411 153:191 154:29 155:421 156:272
157:354 158:275 159:658 160:349 161:424 162:521
163:203 164:577 165:509 166:254 167:598 168:1005
169:125 170:1069 171:188 172:23 173:1569 174:558
175:488 176:1157 177:2111 178:1890 179:71 180:1502
181:600 182:1285 183:419 184:646 185:712 186:2337
187:1376 188:1884 189:1299 190:6810 192:6759 193:5617
194:4717 195:3600 196:1346 197:1066 198:4519 199:5343
200:5983 201:2445 202:8675 203:8798 204:4442 205:2562
206:2731 207:2820 208:4004 209:3588 210:2819 211:1528
212:2278 213:2037 214:903 215:99 216:5219 217:1642
218:606 219:324 220:1271 221:551 222:316 223:460


End of report
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