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Data as of Nov 3, 2026

205.248.0.0/16

No anonymizer space · no proxy exits in 30 days

British Telecommunications Limited · space held by INFONET Services Corporation

Announcement
this exact prefix
RPKI valid
Announced by
AS3300
Type
Residential
>99% of it

Registrations in this block

The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
205.248.0.0/1665,536BT-IP-ICG-GIIB-BLK14INFONET Services Corporation (INFO) · USDirect AllocationApr 28, 1995[email protected]
└ 205.248.0.0 - 205.248.5.2551,536RESERVED-FOR-KYMMENE1unknown———
└ 205.248.6.0/23512BENTLEY-SYSTEMS2unknown———
└ 205.248.8.0/24256DATASTREAM9-Aunknown———
└ 205.248.9.0/24256GUIDANT6unknown———
└ 205.248.10.0 - 205.248.15.2551,536MICROSOFT29unknown———
└ 205.248.16.0/23512INFORMIX30-Aunknown———
└ 205.248.18.0/24256IVARANS3unknown———
└ 205.248.24.0/23512SPILLERS3-Aunknown———
└ 205.248.26.0/24256SPILLERS4-Aunknown———
└ 205.248.28.0/24256MOULINEX1unknown———
└ 205.248.36.0/24256GUIDANT7unknown———
└ 205.248.37.0/24256SPENCER6unknown———
└ 205.248.38.0/24256LG-ELECTRONunknown———
└ 205.248.39.0/24256EUROKOM2unknown———
└ 205.248.40.0/24256LG-ELECTRON-GOLDSTARunknown———
└ 205.248.41.0 - 205.248.43.255768MICROSOFT30unknown———
└ 205.248.44.0/23512PERSTORP2unknown———
└ 205.248.46.0/24256RESERVED-RTRunknown———
└ 205.248.47.0/24256HAMBURG-SUED2unknown———
└ 205.248.48.0/24256CDPC1unknown———
└ 205.248.49.0/24256SPENCER7unknown———
└ 205.248.50.0/23512MICROSOFT31unknown———
└ 205.248.52.0/24256FASTECH1unknown———
└ 205.248.53.0/24256PERSTORP3unknown———
└ 205.248.54.0/23512REINSURANCE1unknown———
└ 205.248.56.0/24256SUN-MICROSYSTEMS34unknown———
└ 205.248.59.0/24256PERSTORP4unknown———
└ 205.248.60.0/24256BUSINESS-ENGINEERING1unknown———
└ 205.248.61.0 - 205.248.63.255768MICROSOFT32unknown———
└ 205.248.64.0/24256PICTURETEL5unknown———
└ 205.248.65.0/24256DYNO3unknown———
└ 205.248.66.0/24256CEDEX1unknown———
└ 205.248.67.0/24256CUSHMAN-WAKEFIELD3unknown———
└ 205.248.68.0/23512HERBALIFE6-Aunknown———
└ 205.248.70.0/23512GUIDANT8unknown———
└ 205.248.72.0/24256MICROSOFT34unknown———
└ 205.248.73.0/24256HEIDELBERG6unknown———
└ 205.248.74.0/24256SYQUEST2unknown———
└ 205.248.75.0 - 205.248.76.255512PIGGYBACK-NALCO-EXX1unknown———
└ 205.248.77.0/24256DYNO4unknown———
└ 205.248.78.0/23512PIGGYBACK-NALCO-EXX2unknown———
└ 205.248.130.0 - 205.248.132.255768MARION-MERRELL13unknown———
└ 205.248.133.0/24256PHIBRO1unknown———
└ 205.248.134.0/24256PERSTORP5unknown———
└ 205.248.137.0 - 205.248.143.2551,792DATASTREAM10unknown———
└ 205.248.144.64/2816UNITOR8unknown———
└ 205.248.144.192/2664PRIDE-INTERNATIONAL5unknown———
└ 205.248.145.32/2732TRANSOCEAN12unknown———
└ 205.248.147.0/24256DATASTREAM11unknown———
└ 205.248.148.128/2664PRIDE-INTERNATIONAL6unknown———
└ 205.248.148.192/2664PRIDE-INTERNATIONAL7unknown———
└ 205.248.149.0/24256ENGELHARD1unknown———
└ 205.248.150.0/24256INFONET-S-W-SOLUTIONSunknown———
└ 205.248.151.0 - 205.248.153.255768ADT1-Aunknown———
└ 205.248.154.0/23512DAIICHI1unknown———
└ 205.248.156.0/23512INFORMIX32unknown———
└ 205.248.158.0 - 205.248.161.2551,024INTERNAL-LAN-GROUP1unknown———
└ 205.248.162.0/24256PRUDENTIAL1unknown———
└ 205.248.163.0/24256PIGGYBACK-FOR-MICROSOunknown———
└ 205.248.164.0/24256ACCESSION1unknown———
└ 205.248.165.0/24256NALCO7unknown———
└ 205.248.166.0/24256NORTHERN-TRUST-SAS-LAunknown———
└ 205.248.169.0/24256AUDIOVOX1unknown———
└ 205.248.172.0/24256AUDIO-BOX1unknown———
└ 205.248.173.0 - 205.248.176.2551,024CATS1unknown———
└ 205.248.177.0 - 205.248.179.255768COLOPLAST1unknown———
└ 205.248.180.0/24256PRUDENTIAL2unknown———
└ 205.248.181.0/24256INFORMIX33unknown———
└ 205.248.182.0 - 205.248.189.2552,048ENGELHARD2unknown———
└ 205.248.191.0/24256PRUDENTIAL3unknown———
└ 205.248.192.0 - 205.248.196.2551,280TETRA1-Aunknown———
└ 205.248.197.0/24256SUNGARD2-Aunknown———
└ 205.248.198.0/23512SCHOELLER2unknown———
└ 205.248.200.0/24256TERUMO3unknown———
└ 205.248.202.0/24256HAMBURG-SUED3unknown———
└ 205.248.203.0/24256DATASTREAM12unknown———
└ 205.248.204.0/221,024INFORMIX34unknown———
└ 205.248.209.0/24256PERSTORP6unknown———
└ 205.248.210.0/24256DORNIER1unknown———
└ 205.248.211.0/24256INFORMIX35unknown———
└ 205.248.212.0/221,024MICROSOFT35unknown———
└ 205.248.216.0/24256DORNIER2unknown———
└ 205.248.217.0 - 205.248.218.255512CHUBB1unknown———
└ 205.248.219.0/24256HOGANAS1unknown———
└ 205.248.220.0/23512PERSTORP7unknown———
└ 205.248.222.0/23512ENGELHARD3unknown———
└ 205.248.224.0/24256NOKIA7unknown———
└ 205.248.225.0/24256SAPPI12unknown———
└ 205.248.226.0/24256GENICOM1unknown———
└ 205.248.227.0/24256OSP1unknown———
└ 205.248.228.0/24256MICROSOFT36unknown———
└ 205.248.229.0/24256SPILLERS5unknown———
└ 205.248.230.0/24256GUIDANT9unknown———
└ 205.248.231.0/24256TETRA2-Aunknown———
└ 205.248.234.0/24256INTERNAL-PERSPEXION1unknown———
└ 205.248.235.0/24256MICROSOFT37unknown———
└ 205.248.237.0/24256TETRA3-Aunknown———
└ 205.248.241.0/24256AUDIOVOX2unknown———
└ 205.248.242.0/24256LG-GROUP-SEMICON1unknown———
└ 205.248.243.0 - 205.248.244.255512MICROSOFT44unknown———
└ 205.248.245.0 - 205.248.246.255512ATT-THISCO1unknown———
└ 205.248.247.0/24256DAIICHI2unknown———
└ 205.248.248.0/24256HEIDELBERG9unknown———
└ 205.248.249.0/24256PERSTORP12unknown———
└ 205.248.250.0/23512GUIDANT11unknown———
└ 205.248.252.0/24256DANFOSS1unknown———
└ 205.248.253.0/24256SUN-MICROSYSTEMS37unknown———
└ 205.248.254.0/24256ISL6unknown———
└ 205.248.255.0/24256MEGACHIP2unknown———

Composition

The types across the prefix's announced space, by addresses.

Announced space

Address share

Announced space

Types across the prefix

65,536 addresses
TypeAddressesShareRanges
Residential65,040>99%6
Business4960.76%6

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Origin network

AS3300

GB
Name
British Telecommunications Limited
Type
Internet provider
Registered
Oct 28, 1994
Domain
bt.net
Website
www.bt.net
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed