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.

Tuesday, December 4, 2012

[bgp-stats] Routing Table Report - London view

* BGP Routing Table Analysis Reports *
Routing Table Report 08:00 +10GMT Wed 05 Dec, 2012

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

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

BGP routing table entries examined: 427487
Prefixes after maximum aggregation: 178194
Deaggregation factor: 2.40
Unique aggregates announced to Internet: 213227
Total ASes present in the Internet Routing Table: 39417
Prefixes per ASN: 10.85
Origin-only ASes present in the Internet Routing Table: 33898
Origin ASes announcing only one prefix: 15826
Transit ASes present in the Internet Routing Table: 5519
Transit-only ASes present in the Internet Routing Table: 127
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 40
Max AS path prepend of ASN ( 22394) 35
Prefixes from unregistered ASNs in the Routing Table: 1779
Unregistered ASNs in the Routing Table: 457
Number of 32-bit ASNs allocated by the RIRs: 3549
Number of 32-bit ASNs visible in the Routing Table: 0
Prefixes from 32-bit ASNs in the Routing Table: 8540
Special use prefixes present in the Routing Table: 21
Prefixes being announced from unallocated address space: 152
Number of addresses announced to Internet: 2635638016
Equivalent to 157 /8s, 24 /16s and 165 /24s
Percentage of available address space announced: 71.2
Percentage of allocated address space announced: 71.2
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: 149370

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

Prefixes being announced by APNIC Region ASes: 98706
Total APNIC prefixes after maximum aggregation: 31255
APNIC Deaggregation factor: 3.16
Prefixes being announced from the APNIC address blocks: 100212
Unique aggregates announced from the APNIC address blocks: 43218
APNIC Region origin ASes present in the Internet Routing Table: 4755
APNIC Prefixes per ASN: 21.08
APNIC Region origin ASes announcing only one prefix: 1269
APNIC Region transit ASes present in the Internet Routing Table: 750
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: 713001216
Equivalent to 42 /8s, 127 /16s and 137 /24s
Percentage of available APNIC address space announced: 83.3

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: 153775
Total ARIN prefixes after maximum aggregation: 77905
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 154512
Unique aggregates announced from the ARIN address blocks: 69960
ARIN Region origin ASes present in the Internet Routing Table: 15250
ARIN Prefixes per ASN: 10.13
ARIN Region origin ASes announcing only one prefix: 5769
ARIN Region transit ASes present in the Internet Routing Table: 1532
Average ARIN Region AS path length visible: 3.3
Max ARIN Region AS path length visible: 40
Number of ARIN region 32-bit ASNs visible in the Routing Table: 0
Number of ARIN addresses announced to Internet: 1087411968
Equivalent to 64 /8s, 208 /16s and 151 /24s
Percentage of available ARIN address space announced: 57.5

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, 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: 111796
Total RIPE prefixes after maximum aggregation: 57915
RIPE Deaggregation factor: 1.93
Prefixes being announced from the RIPE address blocks: 114675
Unique aggregates announced from the RIPE address blocks: 73366
RIPE Region origin ASes present in the Internet Routing Table: 16949
RIPE Prefixes per ASN: 6.77
RIPE Region origin ASes announcing only one prefix: 8115
RIPE Region transit ASes present in the Internet Routing Table: 2718
Average RIPE Region AS path length visible: 3.5
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: 649473024
Equivalent to 38 /8s, 182 /16s and 44 /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: 44118
Total LACNIC prefixes after maximum aggregation: 8772
LACNIC Deaggregation factor: 5.03
Prefixes being announced from the LACNIC address blocks: 47568
Unique aggregates announced from the LACNIC address blocks: 22939
LACNIC Region origin ASes present in the Internet Routing Table: 1727
LACNIC Prefixes per ASN: 27.54
LACNIC Region origin ASes announcing only one prefix: 496
LACNIC Region transit ASes present in the Internet Routing Table: 315
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: 120165376
Equivalent to 7 /8s, 41 /16s and 148 /24s
Percentage of available LACNIC address space announced: 71.6

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: 9795
Total AfriNIC prefixes after maximum aggregation: 2294
AfriNIC Deaggregation factor: 4.27
Prefixes being announced from the AfriNIC address blocks: 10367
Unique aggregates announced from the AfriNIC address blocks: 3610
AfriNIC Region origin ASes present in the Internet Routing Table: 578
AfriNIC Prefixes per ASN: 17.94
AfriNIC Region origin ASes announcing only one prefix: 177
AfriNIC Region transit ASes present in the Internet Routing Table: 123
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: 43000064
Equivalent to 2 /8s, 144 /16s and 33 /24s
Percentage of available AfriNIC address space announced: 42.7

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 2100 11550 604 Korea Telecom (KIX)
4755 1605 374 159 TATA Communications formerly
9829 1411 1155 42 National Internet Backbone
7545 1326 301 87 TPG Internet Pty Ltd
9583 1171 88 503 Sify Limited
7552 1126 1062 11 Vietel Corporation
24560 1035 385 165 Bharti Airtel Ltd., Telemedia
9498 1033 310 74 BHARTI Airtel Ltd.
18101 1016 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 3194 994 218 Windstream Communications Inc
6389 3142 3719 146 BellSouth.net Inc.
18566 2076 381 182 Covad Communications Co.
22773 1940 2932 131 Cox Communications Inc.
1785 1932 677 122 PaeTec Communications, Inc.
20115 1683 1606 623 Charter Communications
4323 1588 1169 393 tw telecom holdings, inc.
30036 1364 283 751 Mediacom Communications Corp
7018 1283 10307 851 AT&T Services, Inc.
7011 1223 334 693 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 1663 544 16 Corbina telecom
2118 1424 97 15 EUnet/RELCOM Autonomous Syste
12479 856 777 64 France Telecom Espana SA
34984 851 210 218 BILISIM TELEKOM
13188 739 92 135 Ukraine
31148 730 38 13 FreeNet ISP
6830 719 2313 438 UPC Broadband
20940 706 229 551 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 2262 386 206 Types of queries are: POCs, o
28573 2190 1290 71 Types of queries are: POCs, o
7303 1668 1138 201 Telecom Argentina S.A.
6503 1530 435 69 Axtel, S.A.B. de C.V.
8151 1456 3021 349 Uninet S.A. de C.V.
27947 732 78 88 Telconet S.A
3816 661 309 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 772 48 3 MOBITEL
8452 540 958 13 TEDATA
6713 519 666 20 Itissalat Al-MAGHRIB
24835 289 80 8 RAYA Telecom - Egypt
3741 267 906 225 The Internet Solution
12258 194 28 66 Vodacom Internet Company
15399 193 29 7 Wananchi Online Limited
15706 191 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 3194 994 218 Windstream Communications Inc
6389 3142 3719 146 BellSouth.net Inc.
17974 2431 826 46 PT Telekomunikasi Indonesia
10620 2262 386 206 Types of queries are: POCs, o
28573 2190 1290 71 Types of queries are: POCs, o
4766 2100 11550 604 Korea Telecom (KIX)
18566 2076 381 182 Covad Communications Co.
22773 1940 2932 131 Cox Communications Inc.
1785 1932 677 122 PaeTec Communications, Inc.
20115 1683 1606 623 Charter Communications

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 3142 2996 BellSouth.net Inc.
17974 2431 2385 PT Telekomunikasi Indonesia
28573 2190 2119 Types of queries are: POCs, o
10620 2262 2056 Types of queries are: POCs, o
18566 2076 1894 Covad Communications Co.
1785 1932 1810 PaeTec Communications, Inc.
22773 1940 1809 Cox Communications Inc.
8402 1663 1647 Corbina telecom
4766 2100 1496 Korea Telecom (KIX)
7303 1668 1467 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
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
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
59521 UNALLOCATED 5.134.192.0/21 29518 Bredband2 AB
59441 UNALLOCATED 5.144.128.0/21 50810 Mobin Net Communicat

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 /11:88 /12:243
/13:475 /14:858 /15:1560 /16:12414 /17:6592 /18:10785
/19:21465 /20:30686 /21:32710 /22:43285 /23:40020 /24:225646
/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 2618 3194 Windstream Communications Inc
18566 2026 2076 Covad Communications Co.
6389 1780 3142 BellSouth.net Inc.
8402 1399 1663 Corbina telecom
30036 1275 1364 Mediacom Communications Corp
22773 1274 1940 Cox Communications Inc.
11492 1146 1181 CABLE ONE, INC.
6503 1051 1530 Axtel, S.A.B. de C.V.
1785 1021 1932 PaeTec Communications, Inc.
7011 958 1223 Frontier Communications of Am

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

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

1:609 2:694 3:1 4:13 5:665 6:3
8:485 12:1951 13:3 14:636 15:11 16:3
17:6 20:27 23:219 24:1781 27:1393 31:1318
32:49 33:2 34:2 36:7 37:1058 38:836
39:2 40:140 41:2744 42:179 44:3 46:1690
47:3 49:504 50:610 52:12 54:27 55:6
57:31 58:987 59:548 60:171 61:1270 62:1042
63:2015 64:4341 65:2198 66:4485 67:2083 68:1181
69:3243 70:925 71:548 72:1890 74:2611 75:479
76:301 77:1014 78:991 79:506 80:1223 81:988
82:638 83:538 84:530 85:1157 86:482 87:959
88:347 89:1754 90:305 91:5350 92:588 93:1559
94:2018 95:1277 96:409 97:323 98:957 99:37
100:30 101:283 103:1859 105:516 106:119 107:203
108:470 109:1683 110:784 111:968 112:457 113:717
114:637 115:869 116:868 117:748 118:967 119:1213
120:370 121:664 122:1692 123:1135 124:1292 125:1291
128:511 129:190 130:279 131:635 132:313 133:143
134:243 135:62 136:214 137:230 138:343 139:165
140:156 141:294 142:490 143:374 144:490 145:81
146:514 147:264 148:720 149:329 150:146 151:221
152:396 153:183 154:23 155:441 156:219 157:328
158:256 159:594 160:334 161:389 162:371 163:180
164:578 165:444 166:480 167:561 168:984 169:128
170:974 171:153 172:6 173:1706 174:618 175:460
176:857 177:1450 178:1688 180:1338 181:178 182:1109
183:305 184:624 185:108 186:2071 187:1442 188:1779
189:1605 190:6018 192:6024 193:5822 194:4644 195:3656
196:1237 197:282 198:3913 199:5088 200:5950 201:1986
202:8536 203:8600 204:4362 205:2531 206:2660 207:2725
208:4063 209:3628 210:2772 211:1524 212:2117 213:1876
214:845 215:75 216:5163 217:1606 218:578 219:297
220:1239 221:543 222:336 223:357

End of report
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