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, December 10, 2012

[bgp-stats] Routing Table Report - London view

* BGP Routing Table Analysis Reports *
Routing Table Report 08:00 +10GMT Tue 11 Dec, 2012

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

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

BGP routing table entries examined: 429073
Prefixes after maximum aggregation: 178389
Deaggregation factor: 2.41
Unique aggregates announced to Internet: 213515
Total ASes present in the Internet Routing Table: 39459
Prefixes per ASN: 10.87
Origin-only ASes present in the Internet Routing Table: 33951
Origin ASes announcing only one prefix: 15880
Transit ASes present in the Internet Routing Table: 5508
Transit-only ASes present in the Internet Routing Table: 123
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 29
Max AS path prepend of ASN ( 28730) 25
Prefixes from unregistered ASNs in the Routing Table: 1815
Unregistered ASNs in the Routing Table: 467
Number of 32-bit ASNs allocated by the RIRs: 3572
Number of 32-bit ASNs visible in the Routing Table: 0
Prefixes from 32-bit ASNs in the Routing Table: 8555
Special use prefixes present in the Routing Table: 21
Prefixes being announced from unallocated address space: 149
Number of addresses announced to Internet: 2638226944
Equivalent to 157 /8s, 64 /16s and 38 /24s
Percentage of available address space announced: 71.3
Percentage of allocated address space announced: 71.3
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 94.0
Total number of prefixes smaller than registry allocations: 150213

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

Prefixes being announced by APNIC Region ASes: 98820
Total APNIC prefixes after maximum aggregation: 31238
APNIC Deaggregation factor: 3.16
Prefixes being announced from the APNIC address blocks: 100372
Unique aggregates announced from the APNIC address blocks: 43224
APNIC Region origin ASes present in the Internet Routing Table: 4756
APNIC Prefixes per ASN: 21.10
APNIC Region origin ASes announcing only one prefix: 1269
APNIC Region transit ASes present in the Internet Routing Table: 757
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: 714362624
Equivalent to 42 /8s, 148 /16s and 79 /24s
Percentage of available APNIC address space announced: 83.5

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: 154206
Total ARIN prefixes after maximum aggregation: 77968
ARIN Deaggregation factor: 1.98
Prefixes being announced from the ARIN address blocks: 154914
Unique aggregates announced from the ARIN address blocks: 69985
ARIN Region origin ASes present in the Internet Routing Table: 15263
ARIN Prefixes per ASN: 10.15
ARIN Region origin ASes announcing only one prefix: 5782
ARIN Region transit ASes present in the Internet Routing Table: 1531
Average ARIN Region AS path length visible: 3.3
Max ARIN Region AS path length visible: 24
Number of ARIN region 32-bit ASNs visible in the Routing Table: 0
Number of ARIN addresses announced to Internet: 1088755456
Equivalent to 64 /8s, 229 /16s and 23 /24s
Percentage of available ARIN address space announced: 57.6

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: 112469
Total RIPE prefixes after maximum aggregation: 57988
RIPE Deaggregation factor: 1.94
Prefixes being announced from the RIPE address blocks: 115347
Unique aggregates announced from the RIPE address blocks: 73562
RIPE Region origin ASes present in the Internet Routing Table: 16972
RIPE Prefixes per ASN: 6.80
RIPE Region origin ASes announcing only one prefix: 8141
RIPE Region transit ASes present in the Internet Routing Table: 2703
Average RIPE Region AS path length visible: 3.4
Max RIPE Region AS path length visible: 29
Number of RIPE region 32-bit ASNs visible in the Routing Table: 0
Number of RIPE addresses announced to Internet: 649292032
Equivalent to 38 /8s, 179 /16s and 105 /24s
Percentage of available RIPE address space announced: 94.4

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: 44458
Total LACNIC prefixes after maximum aggregation: 8793
LACNIC Deaggregation factor: 5.06
Prefixes being announced from the LACNIC address blocks: 47897
Unique aggregates announced from the LACNIC address blocks: 22987
LACNIC Region origin ASes present in the Internet Routing Table: 1730
LACNIC Prefixes per ASN: 27.69
LACNIC Region origin ASes announcing only one prefix: 502
LACNIC Region transit ASes present in the Internet Routing Table: 314
Average LACNIC Region AS path length visible: 3.9
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: 120339456
Equivalent to 7 /8s, 44 /16s and 60 /24s
Percentage of available LACNIC address space announced: 71.7

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: 9809
Total AfriNIC prefixes after maximum aggregation: 2349
AfriNIC Deaggregation factor: 4.18
Prefixes being announced from the AfriNIC address blocks: 10393
Unique aggregates announced from the AfriNIC address blocks: 3626
AfriNIC Region origin ASes present in the Internet Routing Table: 584
AfriNIC Prefixes per ASN: 17.80
AfriNIC Region origin ASes announcing only one prefix: 186
AfriNIC Region transit ASes present in the Internet Routing Table: 125
Average AfriNIC Region AS path length visible: 3.3
Max AfriNIC Region AS path length visible: 15
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 0
Number of AfriNIC addresses announced to Internet: 42897664
Equivalent to 2 /8s, 142 /16s and 145 /24s
Percentage of available AfriNIC address space announced: 42.6

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 2431 826 46 PT Telekomunikasi Indonesia
4766 2109 11550 606 Korea Telecom (KIX)
4755 1630 381 169 TATA Communications formerly
9829 1413 1156 42 National Internet Backbone
7545 1322 301 87 TPG Internet Pty Ltd
9583 1171 87 502 Sify Limited
7552 1112 1062 11 Vietel Corporation
24560 1035 385 165 Bharti Airtel Ltd., Telemedia
9498 1026 307 70 BHARTI Airtel Ltd.
18101 1017 135 170 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 3182 994 219 Windstream Communications Inc
6389 3131 3718 141 BellSouth.net Inc.
18566 2076 381 182 Covad Communications Co.
22773 1941 2932 131 Cox Communications Inc.
1785 1934 677 122 PaeTec Communications, Inc.
20115 1687 1607 622 Charter Communications
4323 1589 1169 395 tw telecom holdings, inc.
30036 1370 290 755 Mediacom Communications Corp
7018 1296 10566 861 AT&T Services, Inc.
7011 1215 322 692 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 1720 544 16 Corbina telecom
2118 1424 97 15 EUnet/RELCOM Autonomous Syste
34984 867 211 224 BILISIM TELEKOM
12479 859 777 64 France Telecom Espana SA
13188 746 95 133 Ukraine
31148 738 38 13 FreeNet ISP
6830 716 2313 437 UPC Broadband
20940 707 229 551 Akamai Technologies European
8551 624 367 39 Bezeq International
58113 613 68 372 LIR DATACENTER TELECOM SRL

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 2264 386 207 Types of queries are: POCs, o
28573 2219 1290 66 Types of queries are: POCs, o
7303 1671 1138 202 Telecom Argentina S.A.
6503 1530 435 69 Axtel, S.A.B. de C.V.
8151 1459 3025 351 Uninet S.A. de C.V.
27947 736 86 89 Telconet S.A
3816 660 309 70 Types of queries are: POCs, o
11172 603 101 68 Alestra, S. de R.L. de C.V.
18881 602 716 18 Global Village Telecom
22047 579 326 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
24863 874 275 36 LINKdotNET AS number
36998 692 48 3 MOBITEL
8452 669 958 13 TEDATA
6713 499 602 20 Itissalat Al-MAGHRIB
24835 291 80 8 RAYA Telecom - Egypt
3741 267 906 225 The Internet Solution
15399 195 29 7 Wananchi Online Limited
12258 194 28 66 Vodacom Internet Company
29975 191 667 21 Vodacom
15706 175 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 3182 994 219 Windstream Communications Inc
6389 3131 3718 141 BellSouth.net Inc.
17974 2431 826 46 PT Telekomunikasi Indonesia
10620 2264 386 207 Types of queries are: POCs, o
28573 2219 1290 66 Types of queries are: POCs, o
4766 2109 11550 606 Korea Telecom (KIX)
18566 2076 381 182 Covad Communications Co.
22773 1941 2932 131 Cox Communications Inc.
1785 1934 677 122 PaeTec Communications, Inc.
8402 1720 544 16 Corbina telecom

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 3131 2990 BellSouth.net Inc.
17974 2431 2385 PT Telekomunikasi Indonesia
28573 2219 2153 Types of queries are: POCs, o
10620 2264 2057 Types of queries are: POCs, o
18566 2076 1894 Covad Communications Co.
1785 1934 1812 PaeTec Communications, Inc.
22773 1941 1810 Cox Communications Inc.
8402 1720 1704 Corbina telecom
4766 2109 1503 Korea Telecom (KIX)
7303 1671 1469 Telecom Argentina S.A.

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

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

Bad AS Designation Network Transit AS Description
61309 UNALLOCATED 5.1.96.0/21 41562 Host4all Sarl
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
61395 UNALLOCATED 5.83.56.0/22 3292 TDC Data Networks
61395 UNALLOCATED 5.83.60.0/22 3292 TDC Data Networks
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

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 Jump Management SRL
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

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

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

Network Origin AS Description
27.112.114.0/24 23884 Proimage Engineering and Comm
41.222.80.0/21 37110 Moztel LDA
41.223.108.0/22 36966 >>UNKNOWN<<
62.12.96.0/19 38478 SunnyVision Limited
62.61.220.0/24 24974 Tachyon Europe BV
62.61.221.0/24 24974 Tachyon Europe BV
64.66.32.0/20 18864 >>UNKNOWN<<
64.187.208.0/24 174 Cogent Communications
64.187.209.0/24 23005 SWITCH Communications Group L
65.111.1.0/24 32258 SDN Global

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 /9:13 /10:30 /11:87 /12:244
/13:475 /14:858 /15:1559 /16:12432 /17:6595 /18:10863
/19:21544 /20:30733 /21:32692 /22:43534 /23:40121 /24:226676
/25:9 /26:12 /27:11 /28:144 /29:190 /30:91
/31:0 /32:141

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

ASN No of nets Total ann. Description
7029 2611 3182 Windstream Communications Inc
18566 2026 2076 Covad Communications Co.
6389 1776 3131 BellSouth.net Inc.
8402 1451 1720 Corbina telecom
30036 1278 1370 Mediacom Communications Corp
22773 1275 1941 Cox Communications Inc.
11492 1147 1183 CABLE ONE, INC.
6503 1051 1530 Axtel, S.A.B. de C.V.
1785 1022 1934 PaeTec Communications, Inc.
7011 953 1215 Frontier Communications of Am

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

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

1:608 2:703 3:1 4:13 5:666 6:3
8:488 12:1949 13:3 14:640 15:11 16:3
17:6 20:27 23:218 24:1786 27:1416 31:1333
32:49 33:2 34:2 36:7 37:1078 38:836
39:2 40:140 41:2803 42:179 44:3 46:1698
47:3 49:512 50:616 52:12 54:28 55:7
57:31 58:987 59:547 60:166 61:1274 62:1046
63:2018 64:4356 65:2201 66:4477 67:2083 68:1184
69:3245 70:921 71:547 72:1878 74:2627 75:480
76:292 77:1026 78:1002 79:506 80:1211 81:984
82:633 83:531 84:531 85:1154 86:457 87:961
88:351 89:1726 90:305 91:5351 92:589 93:1629
94:2012 95:1582 96:456 97:322 98:973 99:37
100:30 101:283 103:1892 105:437 106:117 107:203
108:473 109:1676 110:797 111:974 112:455 113:725
114:639 115:870 116:867 117:749 118:960 119:1216
120:371 121:667 122:1691 123:1125 124:1287 125:1288
128:514 129:189 130:283 131:635 132:314 133:142
134:243 135:62 136:214 137:231 138:344 139:165
140:155 141:303 142:491 143:353 144:486 145:81
146:514 147:255 148:718 149:327 150:146 151:236
152:397 153:187 154:21 155:440 156:224 157:334
158:256 159:597 160:335 161:391 162:375 163:181
164:577 165:445 166:476 167:568 168:989 169:129
170:994 171:164 172:6 173:1704 174:632 175:442
176:877 177:1450 178:1700 180:1350 181:181 182:1111
183:304 184:616 185:122 186:2126 187:1456 188:1785
189:1633 190:6108 192:6046 193:5820 194:4655 195:3665
196:1247 197:268 198:3943 199:5095 200:5950 201:1980
202:8556 203:8620 204:4372 205:2540 206:2663 207:2747
208:4067 209:3636 210:2769 211:1527 212:2115 213:1881
214:887 215:74 216:5168 217:1610 218:578 219:302
220:1241 221:542 222:336 223:360

End of report
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