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AS2856

British Telecommunications Limited
Announced prefixes
543
Upstreams
4
Peers
83
Downstreams
150

Adjacent ASNs

UpstreamDownstreamAS5400AS5400AS25180AS25180AS56595AS56595AS215638AS215638AS72AS72AS2134AS2134AS2535AS2535AS3738AS3738AS5091AS5091AS6871AS6871AS7358AS7358AS8336AS8336+142 more+142 more83 peer ASNs (exchange traffic as equals, not a hierarchy)Peers ×83AS2856

Neighbor nodes aren't clickable. To look up an ASN, use the ASN lookup page

All Neighbor ASNs

Upstream4

Buys transit from them

  • AS5400
  • AS25180
  • AS56595
  • AS215638

Peer83

Settlement-free traffic exchange

  • AS249
  • AS702
  • AS786
  • AS1267
  • AS1828
  • AS2119
  • AS2686
  • AS3170
  • AS3303
  • AS4455
  • AS4766
  • AS5089
  • AS5405
  • AS5413
  • AS6206
  • AS6424
  • AS6461
  • AS6667
  • AS6908
  • AS7979
  • AS8220
  • AS8359
  • AS8426
  • AS8607
  • AS8657
  • AS8757
  • AS8966
  • AS9002
  • AS9009
  • AS9505
  • AS12200
  • AS12713
  • AS13009
  • AS13030
  • AS13213
  • AS13237
  • AS15557
  • AS15692
  • AS15830
  • AS16265
  • AS16276
  • AS17639
  • AS20253
  • AS20860
  • AS25198
  • AS25369
  • AS25577
  • AS30058
  • AS30740
  • AS30844
  • AS31727
  • AS31898
  • AS32590
  • AS33353
  • AS35266
  • AS39122
  • AS41107
  • AS41354
  • AS41811
  • AS42473
  • AS42689
  • AS43519
  • AS44444
  • AS47480
  • AS48070
  • AS48185
  • AS49544
  • AS50245
  • AS50300
  • AS50304
  • AS51185
  • AS57356
  • AS60068
  • AS60439
  • AS61049
  • AS61323
  • AS62044
  • AS62240
  • AS137409
  • AS199524
  • AS201126
  • AS212655
  • AS396356

Downstream150

Buys transit from this AS

  • AS72
  • AS2134
  • AS2535
  • AS3738
  • AS5091
  • AS6871
  • AS7358
  • AS8336
  • AS8435
  • AS8698
  • AS9011
  • AS11031
  • AS11528
  • AS11939
  • AS12222
  • AS12440
  • AS13205
  • AS13458
  • AS14630
  • AS14766
  • AS14931
  • AS15141
  • AS15248
  • AS15499
  • AS15865
  • AS16477
  • AS16525
  • AS16839
  • AS17274
  • AS17903
  • AS19239
  • AS19305
  • AS19428
  • AS19812
  • AS20163
  • AS20464
  • AS20705
  • AS21054
  • AS21110
  • AS21218
  • AS21296
  • AS21301
  • AS21369
  • AS21464
  • AS21470
  • AS21758
  • AS22775
  • AS24775
  • AS25049
  • AS25050
  • AS25343
  • AS25421
  • AS28690
  • AS28863
  • AS29033
  • AS29888
  • AS31003
  • AS33001
  • AS33127
  • AS33442
  • AS33680
  • AS33981
  • AS35350
  • AS35707
  • AS36224
  • AS38191
  • AS38936
  • AS39550
  • AS39552
  • AS39957
  • AS41373
  • AS41380
  • AS41570
  • AS41839
  • AS41988
  • AS42536
  • AS43259
  • AS44268
  • AS44371
  • AS44480
  • AS44617
  • AS47113
  • AS47534
  • AS48549
  • AS48688
  • AS49318
  • AS50203
  • AS50826
  • AS50948
  • AS51953
  • AS53926
  • AS54113
  • AS55290
  • AS56644
  • AS56745
  • AS57002
  • AS59345
  • AS59445
  • AS59451
  • AS60339
  • AS60925
  • AS60962
  • AS63112
  • AS63399
  • AS131993
  • AS197409
  • AS198032
  • AS198386
  • AS199262
  • AS199675
  • AS200961
  • AS201528
  • AS201529
  • AS201536
  • AS202206
  • AS202275
  • AS202466
  • AS202907
  • AS203133
  • AS203171
  • AS204322
  • AS204550
  • AS205114
  • AS205693
  • AS206051
  • AS206146
  • AS206166
  • AS206237
  • AS206467
  • AS206686
  • AS207087
  • AS207273
  • AS207552
  • AS209258
  • AS209761
  • AS209997
  • AS210988
  • AS211015
  • AS211077
  • AS211303
  • AS211389
  • AS212329
  • AS212565
  • AS213786
  • AS213867
  • AS213885
  • AS393414
  • AS394265
  • AS394731
  • AS395959

Recent Prefix Changes

latest 50

IP prefixes this ASN started or stopped announcing (derived by diffing successive data syncs).

  • Announced78.105.151.0/242026-08-26
  • Announced78.105.175.0/242026-08-26
  • Announced78.105.179.0/242026-08-26
  • Announced78.105.188.0/242026-08-26
  • Announced78.105.191.0/242026-08-26
  • Announced78.105.194.0/242026-08-26
  • Announced78.105.198.0/242026-08-26
  • Announced78.105.200.0/242026-08-26
  • Announced78.105.202.0/242026-08-26
  • Announced188.220.122.0/242026-08-26
  • Announced188.220.151.0/242026-08-26
  • Announced188.220.157.0/242026-08-26
  • Announced188.220.167.0/242026-08-26
  • Announced188.220.194.0/242026-08-26
  • Announced188.220.212.0/242026-08-26
  • Announced188.220.229.0/242026-08-26
  • Announced188.221.168.0/242026-08-26
  • Announced188.221.177.0/242026-08-26
  • Announced188.221.184.0/242026-08-26
  • Announced188.221.188.0/242026-08-26
  • Announced188.221.210.0/242026-08-26
  • Withdrawn78.105.151.0/242026-08-26
  • Withdrawn78.105.175.0/242026-08-26
  • Withdrawn78.105.179.0/242026-08-26
  • Withdrawn78.105.188.0/242026-08-26
  • Withdrawn78.105.191.0/242026-08-26
  • Withdrawn78.105.194.0/242026-08-26
  • Withdrawn78.105.198.0/242026-08-26
  • Withdrawn78.105.200.0/242026-08-26
  • Withdrawn78.105.202.0/242026-08-26
  • Withdrawn188.220.122.0/242026-08-26
  • Withdrawn188.220.151.0/242026-08-26
  • Withdrawn188.220.157.0/242026-08-26
  • Withdrawn188.220.167.0/242026-08-26
  • Withdrawn188.220.194.0/242026-08-26
  • Withdrawn188.220.212.0/242026-08-26
  • Withdrawn188.220.229.0/242026-08-26
  • Withdrawn188.221.168.0/242026-08-26
  • Withdrawn188.221.177.0/242026-08-26
  • Withdrawn188.221.184.0/242026-08-26
  • Withdrawn188.221.188.0/242026-08-26
  • Withdrawn188.221.210.0/242026-08-26
  • Announced78.105.151.0/242026-08-26
  • Announced78.105.175.0/242026-08-26
  • Announced78.105.179.0/242026-08-26
  • Announced78.105.188.0/242026-08-26
  • Announced78.105.191.0/242026-08-26
  • Announced78.105.194.0/242026-08-26
  • Announced78.105.198.0/242026-08-26
  • Announced78.105.200.0/242026-08-26

Data: local · Updated 2026-09-07 00:57:41