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.

Wednesday, November 20, 2013

[bgp-stats] Routing Table Report - Brisbane view

* BGP Routing Table Analysis Reports *
Routing Table Report 05:00 +10GMT Thu 21 Nov, 2013

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

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

BGP routing table entries examined: 468724
Prefixes after maximum aggregation: 188094
Deaggregation factor: 2.49
Unique aggregates announced to Internet: 234349
Total ASes present in the Internet Routing Table: 45377
Prefixes per ASN: 10.33
Origin-only ASes present in the Internet Routing Table: 35427
Origin ASes announcing only one prefix: 16328
Transit ASes present in the Internet Routing Table: 5784
Transit-only ASes present in the Internet Routing Table: 144
Average AS path length visible in the Internet Routing Table: 4.9
Max AS path length visible: 29
Max AS path prepend of ASN ( 36992) 22
Prefixes from unregistered ASNs in the Routing Table: 990
Unregistered ASNs in the Routing Table: 288
Number of 32-bit ASNs allocated by the RIRs: 5369
Number of 32-bit ASNs visible in the Routing Table: 4166
Prefixes from 32-bit ASNs in the Routing Table: 13021
Special use prefixes present in the Routing Table: 1
Prefixes being announced from unallocated address space: 1094
Number of addresses announced to Internet: 2653174332
Equivalent to 158 /8s, 36 /16s and 58 /24s
Percentage of available address space announced: 71.7
Percentage of allocated address space announced: 71.7
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 95.3
Total number of prefixes smaller than registry allocations: 162874

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

Prefixes being announced by APNIC Region ASes: 109705
Total APNIC prefixes after maximum aggregation: 33330
APNIC Deaggregation factor: 3.29
Prefixes being announced from the APNIC address blocks: 111913
Unique aggregates announced from the APNIC address blocks: 47525
APNIC Region origin ASes present in the Internet Routing Table: 4847
APNIC Prefixes per ASN: 23.09
APNIC Region origin ASes announcing only one prefix: 1233
APNIC Region transit ASes present in the Internet Routing Table: 822
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 20
Number of APNIC region 32-bit ASNs visible in the Routing Table: 745
Number of APNIC addresses announced to Internet: 728568124
Equivalent to 43 /8s, 109 /16s and 17 /24s
Percentage of available APNIC address space announced: 85.1

APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319,
58368-59391, 63488-63999, 131072-133631
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: 161867
Total ARIN prefixes after maximum aggregation: 81263
ARIN Deaggregation factor: 1.99
Prefixes being announced from the ARIN address blocks: 162720
Unique aggregates announced from the ARIN address blocks: 76057
ARIN Region origin ASes present in the Internet Routing Table: 15884
ARIN Prefixes per ASN: 10.24
ARIN Region origin ASes announcing only one prefix: 6014
ARIN Region transit ASes present in the Internet Routing Table: 1621
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 23
Number of ARIN region 32-bit ASNs visible in the Routing Table: 38
Number of ARIN addresses announced to Internet: 1073241088
Equivalent to 63 /8s, 248 /16s and 92 /24s
Percentage of available ARIN address space announced: 56.8

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: 119042
Total RIPE prefixes after maximum aggregation: 60940
RIPE Deaggregation factor: 1.95
Prefixes being announced from the RIPE address blocks: 122824
Unique aggregates announced from the RIPE address blocks: 78784
RIPE Region origin ASes present in the Internet Routing Table: 17506
RIPE Prefixes per ASN: 7.02
RIPE Region origin ASes announcing only one prefix: 8303
RIPE Region transit ASes present in the Internet Routing Table: 2768
Average RIPE Region AS path length visible: 5.2
Max RIPE Region AS path length visible: 21
Number of RIPE region 32-bit ASNs visible in the Routing Table: 2481
Number of RIPE addresses announced to Internet: 656131072
Equivalent to 39 /8s, 27 /16s and 196 /24s
Percentage of available RIPE address space announced: 95.4

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, 61952-62463, 196608-200191
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: 52561
Total LACNIC prefixes after maximum aggregation: 9806
LACNIC Deaggregation factor: 5.36
Prefixes being announced from the LACNIC address blocks: 57723
Unique aggregates announced from the LACNIC address blocks: 27071
LACNIC Region origin ASes present in the Internet Routing Table: 2036
LACNIC Prefixes per ASN: 28.35
LACNIC Region origin ASes announcing only one prefix: 566
LACNIC Region transit ASes present in the Internet Routing Table: 380
Average LACNIC Region AS path length visible: 5.4
Max LACNIC Region AS path length visible: 29
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 896
Number of LACNIC addresses announced to Internet: 143327744
Equivalent to 8 /8s, 139 /16s and 2 /24s
Percentage of available LACNIC address space announced: 85.4

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: 11823
Total AfriNIC prefixes after maximum aggregation: 2596
AfriNIC Deaggregation factor: 4.55
Prefixes being announced from the AfriNIC address blocks: 12450
Unique aggregates announced from the AfriNIC address blocks: 4028
AfriNIC Region origin ASes present in the Internet Routing Table: 687
AfriNIC Prefixes per ASN: 18.12
AfriNIC Region origin ASes announcing only one prefix: 212
AfriNIC Region transit ASes present in the Internet Routing Table: 134
Average AfriNIC Region AS path length visible: 5.0
Max AfriNIC Region AS path length visible: 25
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 6
Number of AfriNIC addresses announced to Internet: 48055296
Equivalent to 2 /8s, 221 /16s and 68 /24s
Percentage of available AfriNIC address space announced: 47.7

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 2713 902 88 PT TELEKOMUNIKASI INDONESIA
4766 2135 11550 641 Korea Telecom (KIX)
7545 2109 319 111 TPG Internet Pty Ltd
4755 1792 392 190 TATA Communications formerly
9829 1544 1245 45 BSNL National Internet Backbo
9583 1246 95 509 Sify Limited
9498 1210 309 73 BHARTI Airtel Ltd.
7552 1163 1080 13 Vietel Corporation
24560 1096 380 163 Bharti Airtel Ltd., Telemedia
4808 1040 1945 301 CNCGROUP IP network: China169

Complete listing at http://thyme.rand.apnic.net/au/data-ASnet-APNIC

ARIN Region per AS prefix count summary
---------------------------------------

ASN No of nets /20 equiv MaxAgg Description
6389 3044 3688 53 BellSouth.net Inc.
22773 2205 2941 141 Cox Communications, Inc.
1785 2057 686 144 PaeTec Communications, Inc.
18566 2054 379 178 MegaPath Corporation
20115 1684 1655 599 Charter Communications
4323 1649 1114 420 Time Warner Telecom
701 1503 11162 780 MCI Communications Services,
30036 1384 312 581 Mediacom Communications Corp
7018 1333 17778 871 AT&T WorldNet Services
6983 1296 758 581 ITC^Deltacom

Complete listing at http://thyme.rand.apnic.net/au/data-ASnet-ARIN

RIPE Region per AS prefix count summary
---------------------------------------

ASN No of nets /20 equiv MaxAgg Description
8402 1928 544 16 OJSC "Vimpelcom"
34984 1367 244 223 TELLCOM ILETISIM HIZMETLERI A
20940 1147 427 869 Akamai Technologies European
31148 1009 45 19 FreeNet ISP
13188 894 99 48 TOV "Bank-Inform"
6849 870 363 39 JSC UKRTELECOM,
8551 785 370 41 Bezeq International
6830 778 2329 430 UPC Distribution Services
12479 679 797 57 Uni2 Autonomous System
35228 546 246 16 Avatar Broadband Limited

Complete listing at http://thyme.rand.apnic.net/au/data-ASnet-RIPE

LACNIC Region per AS prefix count summary
-----------------------------------------

ASN No of nets /20 equiv MaxAgg Description
28573 3369 1793 87 NET Servicos de Comunicao S.A
10620 2666 432 219 Telmex Colombia S.A.
7303 1728 1150 231 Telecom Argentina Stet-France
18881 1635 908 20 Global Village Telecom
8151 1345 2853 410 UniNet S.A. de C.V.
11830 865 364 15 Instituto Costarricense de El
27947 821 94 92 Telconet S.A
6147 812 373 27 Telefonica Del Peru
6503 789 434 63 AVANTEL, S.A.
7738 780 1498 36 Telecomunicacoes da Bahia S.A

Complete listing at http://thyme.rand.apnic.net/au/data-ASnet-LACNIC

AfriNIC Region per AS prefix count summary
------------------------------------------

ASN No of nets /20 equiv MaxAgg Description
36998 1864 112 5 Sudanese Mobile Telephone (ZA
24863 889 338 26 LINKdotNET AS number
6713 554 633 26 Itissalat Al-MAGHRIB
8452 408 956 9 TEDATA
24835 297 144 9 RAYA Telecom - Egypt
3741 256 921 214 The Internet Solution
36992 228 501 29 Etisalat MISR
29571 224 17 12 Ci Telecom Autonomous system
15706 221 32 6 Sudatel Internet Exchange Aut
29975 192 668 21 Vodacom

Complete listing at http://thyme.rand.apnic.net/au/data-ASnet-AFRINIC

Global Per AS prefix count summary
----------------------------------

ASN No of nets /20 equiv MaxAgg Description
28573 3369 1793 87 NET Servicos de Comunicao S.A
6389 3044 3688 53 BellSouth.net Inc.
17974 2713 902 88 PT TELEKOMUNIKASI INDONESIA
10620 2666 432 219 Telmex Colombia S.A.
22773 2205 2941 141 Cox Communications, Inc.
4766 2135 11550 641 Korea Telecom (KIX)
7545 2109 319 111 TPG Internet Pty Ltd
1785 2057 686 144 PaeTec Communications, Inc.
18566 2054 379 178 MegaPath Corporation
8402 1928 544 16 OJSC "Vimpelcom"

Complete listing at http://thyme.rand.apnic.net/au/data-ASnet

Global Per AS Maximum Aggr summary
----------------------------------

ASN No of nets Net Savings Description
6389 3044 2991 BellSouth.net Inc.
17974 2713 2625 PT TELEKOMUNIKASI INDONESIA
10620 2666 2447 Telmex Colombia S.A.
22773 2205 2064 Cox Communications, Inc.
7545 2109 1998 TPG Internet Pty Ltd
1785 2057 1913 PaeTec Communications, Inc.
8402 1928 1912 OJSC "Vimpelcom"
18566 2054 1876 MegaPath Corporation
36998 1864 1859 Sudanese Mobile Telephone (ZA
18881 1635 1615 Global Village Telecom

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

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

Bad AS Designation Network Transit AS Description
65010 PRIVATE 1.38.8.0/24 38266 Hutchison Essar Ltd.
65010 PRIVATE 1.38.9.0/24 38266 Hutchison Essar Ltd.
65010 PRIVATE 1.38.11.0/24 38266 Hutchison Essar Ltd.
65010 PRIVATE 1.38.32.0/19 38266 Hutchison Essar Ltd.
65010 PRIVATE 1.38.160.0/19 38266 Hutchison Essar Ltd.
65010 PRIVATE 1.38.192.0/20 38266 Hutchison Essar Ltd.
65010 PRIVATE 1.38.224.0/20 38266 Hutchison Essar Ltd.
65010 PRIVATE 1.38.240.0/21 38266 Hutchison Essar Ltd.
65514 PRIVATE 5.102.224.0/19 47956 XFONE COMMUNICATION
62828 UNALLOCATED 8.21.130.0/24 4323 Time Warner Telecom

Complete listing at http://thyme.rand.apnic.net/au/data-badAS

Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------

Prefix Origin AS Description
100.100.0.0/24 4847 China Networks Inter-Exchange

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

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

Network Origin AS Description
23.90.128.0/18 27418 OUTOFWALL INC.
23.91.0.0/19 40676 Psychz Networks
23.91.4.0/24 40676 Psychz Networks
23.91.14.0/24 40676 Psychz Networks
23.91.32.0/19 36315 Servpac Inc.
23.91.80.0/20 21560 Capital Technology Services G
23.91.96.0/20 37958 ChinaCache Networks ASN
23.91.112.0/21 32475 MidPhase Inc.
23.91.160.0/19 36493 3757277 Canada Inc. (oa 295.c
23.91.160.0/22 36493 3757277 Canada Inc. (oa 295.c

Complete listing at http://thyme.rand.apnic.net/au/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 /8:16 /9:11 /10:31 /11:92 /12:253
/13:474 /14:926 /15:1632 /16:12846 /17:6758 /18:11184
/19:23015 /20:32794 /21:35611 /22:49880 /23:43720 /24:249256
/25:44 /26:34 /27:51 /28:37 /29:28 /30:31
/31:0 /32:0

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

ASN No of nets Total ann. Description
18566 2008 2054 MegaPath Corporation
36998 1829 1864 Sudanese Mobile Telephone (ZA
6389 1701 3044 BellSouth.net Inc.
8402 1596 1928 OJSC "Vimpelcom"
22773 1462 2205 Cox Communications, Inc.
30036 1229 1384 Mediacom Communications Corp
11492 1195 1233 Cable One
1785 1095 2057 PaeTec Communications, Inc.
6983 1036 1296 ITC^Deltacom
22561 964 1241 Digital Teleport, Inc

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

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

1:898 2:843 3:3 4:17 5:1027 6:21
8:618 12:1880 13:3 14:880 15:11 16:3
17:18 18:19 20:21 23:564 24:1759 27:1638
31:1506 32:45 33:2 34:5 36:87 37:1929
38:912 39:5 40:182 41:3320 42:287 44:14
46:2023 47:10 49:692 50:844 52:12 54:44
55:7 56:4 57:26 58:1111 59:575 60:378
61:1462 62:1243 63:1987 64:4324 65:2344 66:4160
67:2111 68:1095 69:3285 70:872 71:487 72:2011
74:2573 75:325 76:307 77:1164 78:1064 79:661
80:1273 81:1048 82:650 83:675 84:588 85:1250
86:375 87:1020 88:557 89:1563 90:152 91:5677
92:612 93:1606 94:2066 95:1562 96:513 97:348
98:1025 99:41 100:32 101:406 103:3630 105:527
106:141 107:219 108:531 109:1980 110:971 111:1114
112:585 113:811 114:743 115:1045 116:1015 117:820
118:1185 119:1264 120:364 121:750 122:1835 123:1264
124:1360 125:1469 128:644 129:220 130:337 131:657
132:357 133:158 134:548 135:72 136:283 137:245
138:349 139:294 140:173 141:329 142:533 143:419
144:492 145:90 146:521 147:405 148:729 149:369
150:139 151:649 152:412 153:205 154:52 155:499
156:292 157:370 158:281 159:694 160:360 161:456
162:861 163:202 164:617 165:586 166:263 167:634
168:1038 169:124 170:1118 171:184 172:27 173:1586
174:690 175:525 176:1326 177:2446 178:1862 179:298
180:1616 181:876 182:1383 183:451 184:629 185:1048
186:2640 187:1481 188:1857 189:1263 190:7287 192:6991
193:5429 194:4034 195:3371 196:1327 197:1030 198:4708
199:5454 200:6033 201:2514 202:8873 203:8949 204:4467
205:2622 206:2730 207:2770 208:3982 209:3647 210:2959
211:1561 212:2150 213:1975 214:899 215:91 216:5401
217:1689 218:627 219:315 220:1274 221:585 222:326
223:542

End of report
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