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 10, 2013

[bgp-stats] Routing Table Report - Washington view

* BGP Routing Table Analysis Reports *
Routing Table Report 09:00 +10GMT Wed 11 Dec, 2013

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

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

BGP routing table entries examined: 467588
Prefixes after maximum aggregation: 188655
Deaggregation factor: 2.48
Unique aggregates announced to Internet: 235292
Total ASes present in the Internet Routing Table: 45526
Prefixes per ASN: 10.27
Origin-only ASes present in the Internet Routing Table: 35441
Origin ASes announcing only one prefix: 16280
Transit ASes present in the Internet Routing Table: 5817
Transit-only ASes present in the Internet Routing Table: 150
Average AS path length visible in the Internet Routing Table: 3.9
Max AS path length visible: 37
Max AS path prepend of ASN ( 55644) 31
Prefixes from unregistered ASNs in the Routing Table: 1003
Unregistered ASNs in the Routing Table: 263
Number of 32-bit ASNs allocated by the RIRs: 5480
Number of 32-bit ASNs visible in the Routing Table: 4268
Prefixes from 32-bit ASNs in the Routing Table: 13353
Number of bogon 32-bit ASNs visible in the Routing Table: 1
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 1348
Number of addresses announced to Internet: 2654549088
Equivalent to 158 /8s, 57 /16s and 52 /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: 163160

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

Prefixes being announced by APNIC Region ASes: 108237
Total APNIC prefixes after maximum aggregation: 33528
APNIC Deaggregation factor: 3.23
Prefixes being announced from the APNIC address blocks: 110487
Unique aggregates announced from the APNIC address blocks: 47890
APNIC Region origin ASes present in the Internet Routing Table: 4840
APNIC Prefixes per ASN: 22.83
APNIC Region origin ASes announcing only one prefix: 1223
APNIC Region transit ASes present in the Internet Routing Table: 819
Average APNIC Region AS path length visible: 4.2
Max APNIC Region AS path length visible: 37
Number of APNIC region 32-bit ASNs visible in the Routing Table: 779
Number of APNIC addresses announced to Internet: 726767616
Equivalent to 43 /8s, 81 /16s and 152 /24s
Percentage of available APNIC address space announced: 84.9

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: 161797
Total ARIN prefixes after maximum aggregation: 81358
ARIN Deaggregation factor: 1.99
Prefixes being announced from the ARIN address blocks: 162551
Unique aggregates announced from the ARIN address blocks: 75665
ARIN Region origin ASes present in the Internet Routing Table: 15876
ARIN Prefixes per ASN: 10.24
ARIN Region origin ASes announcing only one prefix: 6001
ARIN Region transit ASes present in the Internet Routing Table: 1619
Average ARIN Region AS path length visible: 3.5
Max ARIN Region AS path length visible: 22
Number of ARIN region 32-bit ASNs visible in the Routing Table: 45
Number of ARIN addresses announced to Internet: 1072657664
Equivalent to 63 /8s, 239 /16s and 117 /24s
Percentage of available ARIN address space announced: 56.7

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: 119116
Total RIPE prefixes after maximum aggregation: 61133
RIPE Deaggregation factor: 1.95
Prefixes being announced from the RIPE address blocks: 122941
Unique aggregates announced from the RIPE address blocks: 79121
RIPE Region origin ASes present in the Internet Routing Table: 17532
RIPE Prefixes per ASN: 7.01
RIPE Region origin ASes announcing only one prefix: 8294
RIPE Region transit ASes present in the Internet Routing Table: 2785
Average RIPE Region AS path length visible: 4.1
Max RIPE Region AS path length visible: 25
Number of RIPE region 32-bit ASNs visible in the Routing Table: 2516
Number of RIPE addresses announced to Internet: 655801184
Equivalent to 39 /8s, 22 /16s and 187 /24s
Percentage of available RIPE address space announced: 95.3

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: 52610
Total LACNIC prefixes after maximum aggregation: 9814
LACNIC Deaggregation factor: 5.36
Prefixes being announced from the LACNIC address blocks: 57843
Unique aggregates announced from the LACNIC address blocks: 27398
LACNIC Region origin ASes present in the Internet Routing Table: 2041
LACNIC Prefixes per ASN: 28.34
LACNIC Region origin ASes announcing only one prefix: 556
LACNIC Region transit ASes present in the Internet Routing Table: 387
Average LACNIC Region AS path length visible: 4.1
Max LACNIC Region AS path length visible: 27
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 920
Number of LACNIC addresses announced to Internet: 146285568
Equivalent to 8 /8s, 184 /16s and 36 /24s
Percentage of available LACNIC address space announced: 87.2

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: 11771
Total AfriNIC prefixes after maximum aggregation: 2591
AfriNIC Deaggregation factor: 4.54
Prefixes being announced from the AfriNIC address blocks: 12418
Unique aggregates announced from the AfriNIC address blocks: 4160
AfriNIC Region origin ASes present in the Internet Routing Table: 693
AfriNIC Prefixes per ASN: 17.92
AfriNIC Region origin ASes announcing only one prefix: 206
AfriNIC Region transit ASes present in the Internet Routing Table: 137
Average AfriNIC Region AS path length visible: 4.0
Max AfriNIC Region AS path length visible: 24
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 8
Number of AfriNIC addresses announced to Internet: 48537344
Equivalent to 2 /8s, 228 /16s and 159 /24s
Percentage of available AfriNIC address space announced: 48.2

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 2724 902 88 PT TELEKOMUNIKASI INDONESIA
4766 2156 11550 652 Korea Telecom (KIX)
7545 2098 319 109 TPG Internet Pty Ltd
4755 1780 391 189 TATA Communications formerly
9829 1554 1248 47 BSNL National Internet Backbo
9583 1418 113 570 Sify Limited
9498 1219 309 72 BHARTI Airtel Ltd.
7552 1171 1080 13 Vietel Corporation
24560 1099 382 167 Bharti Airtel Ltd., Telemedia
4808 1081 2022 310 CNCGROUP IP network: China169

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

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

ASN No of nets /20 equiv MaxAgg Description
6389 3038 3688 53 BellSouth.net Inc.
22773 2303 2939 139 Cox Communications, Inc.
18566 2053 379 178 MegaPath Corporation
1785 2048 686 132 PaeTec Communications, Inc.
20115 1682 1658 597 Charter Communications
4323 1644 1097 416 Time Warner Telecom
701 1506 11144 777 MCI Communications Services,
30036 1381 311 576 Mediacom Communications Corp
7018 1331 17797 871 AT&T WorldNet Services
6983 1293 771 579 ITC^Deltacom

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

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

ASN No of nets /20 equiv MaxAgg Description
8402 1890 544 16 OJSC "Vimpelcom"
34984 1366 244 224 TELLCOM ILETISIM HIZMETLERI A
20940 1173 444 880 Akamai Technologies European
31148 1010 45 20 FreeNet ISP
13188 898 99 42 TOV "Bank-Inform"
6849 843 363 39 JSC UKRTELECOM,
8551 794 370 41 Bezeq International
6830 773 2328 426 UPC Distribution Services
12479 679 798 53 Uni2 Autonomous System
35228 548 246 16 Avatar Broadband Limited

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

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

ASN No of nets /20 equiv MaxAgg Description
28573 3432 1829 94 NET Servicos de Comunicao S.A
10620 2693 436 200 Telmex Colombia S.A.
7303 1736 1161 231 Telecom Argentina Stet-France
18881 1721 908 20 Global Village Telecom
8151 1355 2852 418 UniNet S.A. de C.V.
11830 869 364 15 Instituto Costarricense de El
27947 823 94 90 Telconet S.A
6147 789 373 27 Telefonica Del Peru
7738 780 1498 36 Telecomunicacoes da Bahia S.A
6503 772 434 61 AVANTEL, S.A.

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

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

ASN No of nets /20 equiv MaxAgg Description
36998 1854 112 5 Sudanese Mobile Telephone (ZA
24863 872 338 26 LINKdotNET AS number
6713 554 633 26 Itissalat Al-MAGHRIB
8452 413 956 9 TEDATA
24835 298 144 9 RAYA Telecom - Egypt
29571 249 21 13 Ci Telecom Autonomous system
3741 247 921 209 The Internet Solution
36992 246 525 29 Etisalat MISR
15706 219 32 6 Sudatel Internet Exchange Aut
29975 192 668 21 Vodacom

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

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

ASN No of nets /20 equiv MaxAgg Description
28573 3432 1829 94 NET Servicos de Comunicao S.A
6389 3038 3688 53 BellSouth.net Inc.
17974 2724 902 88 PT TELEKOMUNIKASI INDONESIA
10620 2693 436 200 Telmex Colombia S.A.
22773 2303 2939 139 Cox Communications, Inc.
4766 2156 11550 652 Korea Telecom (KIX)
7545 2098 319 109 TPG Internet Pty Ltd
18566 2053 379 178 MegaPath Corporation
1785 2048 686 132 PaeTec Communications, Inc.
8402 1890 544 16 OJSC "Vimpelcom"

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

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

ASN No of nets Net Savings Description
6389 3038 2985 BellSouth.net Inc.
17974 2724 2636 PT TELEKOMUNIKASI INDONESIA
10620 2693 2493 Telmex Colombia S.A.
22773 2303 2164 Cox Communications, Inc.
7545 2098 1989 TPG Internet Pty Ltd
1785 2048 1916 PaeTec Communications, Inc.
18566 2053 1875 MegaPath Corporation
8402 1890 1874 OJSC "Vimpelcom"
36998 1854 1849 Sudanese Mobile Telephone (ZA
18881 1721 1701 Global Village Telecom

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

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

Bad AS Designation Network Transit AS Description
62828 UNALLOCATED 8.21.130.0/24 4323 Time Warner Telecom
62850 UNALLOCATED 8.25.147.0/24 3356 Level 3 Communicatio
62734 UNALLOCATED 8.31.128.0/24 3356 Level 3 Communicatio
62773 UNALLOCATED 8.35.180.0/22 3356 Level 3 Communicatio
15132 UNALLOCATED 12.9.150.0/24 7018 AT&T WorldNet Servic
62719 UNALLOCATED 12.27.130.0/24 4323 Time Warner Telecom
62861 UNALLOCATED 12.37.197.0/24 7018 AT&T WorldNet Servic
13317 UNALLOCATED 12.44.10.0/24 7018 AT&T WorldNet Servic
23502 UNALLOCATED 12.44.44.0/24 7018 AT&T WorldNet Servic
17300 UNALLOCATED 12.45.103.0/24 7018 AT&T WorldNet Servic

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

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.
23.91.120.0/21 36351 SoftLayer Technologies Inc.
23.91.160.0/19 36493 3757277 Canada Inc. (oa 295.c

Complete listing at http://thyme.rand.apnic.net/us/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
/13:470 /14:921 /15:1616 /16:12786 /17:6688 /18:11087
/19:22879 /20:32797 /21:35417 /22:49691 /23:43527 /24:249179
/25:42 /26:32 /27:17 /28:18 /29:7 /30:2
/31:0 /32:9

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

ASN No of nets Total ann. Description
18566 2008 2053 MegaPath Corporation
36998 1819 1854 Sudanese Mobile Telephone (ZA
6389 1700 3038 BellSouth.net Inc.
8402 1594 1890 OJSC "Vimpelcom"
22773 1554 2303 Cox Communications, Inc.
30036 1221 1381 Mediacom Communications Corp
11492 1184 1225 Cable One
1785 1088 2048 PaeTec Communications, Inc.
6983 1034 1293 ITC^Deltacom
22561 965 1241 Digital Teleport, Inc

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

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

1:925 2:840 3:3 4:16 5:813 6:21
8:612 12:1882 13:3 14:872 15:11 16:3
17:19 18:19 20:36 23:613 24:1757 27:1701
31:1525 32:43 33:2 34:5 36:101 37:1943
38:912 39:5 40:181 41:3275 42:230 44:13
46:2080 47:10 49:696 50:861 52:12 54:44
55:6 56:4 57:25 58:1081 59:579 60:367
61:1469 62:1234 63:1972 64:4377 65:2330 66:4152
67:2121 68:1094 69:3279 70:906 71:509 72:2016
74:2570 75:324 76:293 77:1208 78:1010 79:670
80:1286 81:1044 82:630 83:756 84:585 85:1256
86:382 87:1033 88:522 89:1570 90:151 91:5722
92:619 93:1612 94:2111 95:1536 96:515 97:349
98:1075 99:41 100:33 101:444 103:3775 105:531
106:144 107:241 108:516 109:2006 110:969 111:1124
112:575 113:798 114:733 115:1003 116:997 117:799
118:1216 119:1270 120:331 121:734 122:1783 123:1242
124:1349 125:1434 128:604 129:217 130:338 131:642
132:348 133:158 134:296 135:72 136:275 137:264
138:351 139:165 140:156 141:330 142:538 143:408
144:499 145:90 146:546 147:434 148:724 149:368
150:149 151:484 152:414 153:207 154:45 155:514
156:307 157:367 158:284 159:696 160:360 161:453
162:909 163:205 164:629 165:573 166:276 167:637
168:1034 169:119 170:1128 171:185 172:11 173:1625
174:661 175:523 176:1322 177:2543 178:1877 179:311
180:1584 181:884 182:1406 183:470 184:619 185:1109
186:2647 187:1433 188:1963 189:1257 190:7262 192:7004
193:5471 194:4028 195:3379 196:1336 197:1062 198:4701
199:5482 200:6039 201:2529 202:8785 203:8831 204:4463
205:2619 206:2798 207:2740 208:3958 209:3657 210:2945
211:1602 212:2176 213:1997 214:889 215:84 216:5403
217:1725 218:627 219:311 220:1265 221:586 222:330
223:530

End of report
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