Data as of Nov 3, 2026

209.28.0.0/16

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

91% of it

Announcements

More specific

Announcements inside

Prefix	Origin	Type	Holder	RPKI
209.28.174.0/24 since Aug 2006	AS3300	Residential	INFONET Services Corporation

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.

Range	Addresses	Netname	Holder	Type	Created	Abuse contact
209.28.0.0/16	65,536	BT-CNF-1	INFONET Services Corporation (INFO) · US	Direct Allocation	Jan 28, 1997	[email protected]
└ 209.28.6.32/27	32	WARTSILA-DIESEL5	unknown	—	—	—
└ 209.28.6.128/25	128	SITHE1	unknown	—	—	—
└ 209.28.7.0/24	256	WARTSILA2	unknown	—	—	—
└ 209.28.8.0/25	128	TECNOMATIX1	unknown	—	—	—
└ 209.28.9.0/27	32	DAEWOOBO	unknown	—	—	—
└ 209.28.9.128/26	64	SREMEX3	unknown	—	—	—
└ 209.28.10.0/24	256	MOLEX2	unknown	—	—	—
└ 209.28.11.0/24	256	PHARMACIA44	unknown	—	—	—
└ 209.28.12.0/24	256	AVIRNEX1	unknown	—	—	—
└ 209.28.13.0/24	256	LGGROUP26	unknown	—	—	—
└ 209.28.14.0/24	256	LGGROUP27	unknown	—	—	—
└ 209.28.16.32/29	8	NYPRO-202	unknown	—	—	—
└ 209.28.16.96/27	32	KOREAEXCHANGEBA-202	unknown	—	—	—
└ 209.28.16.160/28	16	COOPOWER1	unknown	—	—	—
└ 209.28.16.240/28	16	WARTSILA19	unknown	—	—	—
└ 209.28.17.0/24	256	LEADINGHOTELS1	unknown	—	—	—
└ 209.28.18.0/24	256	LIZCLAIBORNE1	unknown	—	—	—
└ 209.28.19.0/24	256	FINEMBNEWYORKCIY1	unknown	—	—	—
└ 209.28.20.0/24	256	BUNGE1	unknown	—	—	—
└ 209.28.21.0/24	256	FINEMB13	unknown	—	—	—
└ 209.28.22.0/24	256	ASMAZ1	unknown	—	—	—
└ 209.28.23.0/24	256	HOECHST2	unknown	—	—	—
└ 209.28.24.0/24	256	SUNMICROSYSTEMS45	unknown	—	—	—
└ 209.28.26.0/24	256	JMHI1	unknown	—	—	—
└ 209.28.27.0/24	256	GULLIVERSTRAVEL13	unknown	—	—	—
└ 209.28.28.0/24	256	JMHI2	unknown	—	—	—
└ 209.28.29.0/24	256	KNOWLESELECTRONICS3	unknown	—	—	—
└ 209.28.30.0/24	256	FINEMB12	unknown	—	—	—
└ 209.28.31.0/24	256	DAERYUNG1	unknown	—	—	—
└ 209.28.32.0/24	256	DAERYUNG2	unknown	—	—	—
└ 209.28.33.0/24	256	PHARMACIA58	unknown	—	—	—
└ 209.28.34.192/26	64	MARLINK27	unknown	—	—	—
└ 209.28.35.0/24	256	MIDEM2	unknown	—	—	—
└ 209.28.36.224/27	32	RICHELECTRO10	unknown	—	—	—
└ 209.28.37.0/24	256	BENTLEYSYSTEMS5	unknown	—	—	—
└ 209.28.38.0/29	8	IBMKOREA-202	unknown	—	—	—
└ 209.28.39.0/24	256	WARNACO2	unknown	—	—	—
└ 209.28.41.0/24	256	TDBANK4	unknown	—	—	—
└ 209.28.42.0/24	256	HITACHI4	unknown	—	—	—
└ 209.28.43.0/24	256	HITACHI5	unknown	—	—	—
└ 209.28.44.0/24	256	BUNGE2	unknown	—	—	—
└ 209.28.45.0/26	64	TELEGROUP9	unknown	—	—	—
└ 209.28.46.0/26	64	RICHARDELECTRO7	unknown	—	—	—
└ 209.28.46.192/27	32	MODO25	unknown	—	—	—
└ 209.28.49.128/27	32	CCNCSI1	unknown	—	—	—
└ 209.28.49.192/26	64	SASOL4	unknown	—	—	—
└ 209.28.50.0/26	64	SSAB7	unknown	—	—	—
└ 209.28.50.128/27	32	VANOMMEREN1	unknown	—	—	—
└ 209.28.51.0/24	256	MODO24	unknown	—	—	—
└ 209.28.52.0/24	256	TELEGROUP11	unknown	—	—	—
└ 209.28.53.128/28	16	TERUMO9	unknown	—	—	—
└ 209.28.53.192/28	16	WARTSILA11	unknown	—	—	—
└ 209.28.53.224/27	32	WARTSILA14	unknown	—	—	—
└ 209.28.54.0/26	64	WARNERLAMBERT4	unknown	—	—	—
└ 209.28.54.80/29	8	FAGIBB18	unknown	—	—	—
└ 209.28.54.128/26	64	FINEMBHK1	unknown	—	—	—
└ 209.28.55.0/27	32	MARLINK2	unknown	—	—	—
└ 209.28.55.64/26	64	LIBERTY-ATT2	unknown	—	—	—
└ 209.28.58.0/25	128	BAANJAYA1	unknown	—	—	—
└ 209.28.58.128/25	128	PHARMACIA73	unknown	—	—	—
└ 209.28.59.0/24	256	HENKELOS1	unknown	—	—	—
└ 209.28.62.0/24	256	PHARMACIA59	unknown	—	—	—
└ 209.28.63.0/26	64	NORITSU8	unknown	—	—	—
└ 209.28.63.128/26	64	GEARBULK3	unknown	—	—	—
└ 209.28.64.0/24	256	IPCINFORMSYSTEMS11	unknown	—	—	—
└ 209.28.65.32/28	16	TECNOMATIX8	unknown	—	—	—
└ 209.28.66.0/24	256	BENTLEYSYSTEMS6	unknown	—	—	—
└ 209.28.67.0/24	256	BIOTECH3	unknown	—	—	—
└ 209.28.68.0/24	256	BIOTECH4	unknown	—	—	—
└ 209.28.69.32/27	32	ABCMEXCITY1	unknown	—	—	—
└ 209.28.69.80/28	16	TV-GLOBO1	unknown	—	—	—
└ 209.28.69.112/28	16	TV-GLOBO5	unknown	—	—	—
└ 209.28.69.192/27	32	SREMEX4	unknown	—	—	—
└ 209.28.70.192/26	64	BOBST-209	unknown	—	—	—
└ 209.28.71.0/24	256	VAISALA1	unknown	—	—	—
└ 209.28.72.0/24	256	TELSTRAUK1	unknown	—	—	—
└ 209.28.73.0/24	256	TELSTRAUK2	unknown	—	—	—
└ 209.28.74.0/24	256	TELSTRAUK3	unknown	—	—	—
└ 209.28.75.64/27	32	INFONETCHILE1	unknown	—	—	—
└ 209.28.76.0/24	256	TRANSAMERICA1	unknown	—	—	—
└ 209.28.77.0/24	256	TELSTRAUK4	unknown	—	—	—
└ 209.28.78.0/24	256	SPILLERS12	unknown	—	—	—
└ 209.28.79.0/24	256	TELSTRAUK5	unknown	—	—	—
└ 209.28.80.0/24	256	TELSTRAUK6	unknown	—	—	—
└ 209.28.81.0/24	256	TELSTRAUK7	unknown	—	—	—
└ 209.28.82.128/26	64	KOMBV4-200	unknown	—	—	—
└ 209.28.83.0/24	256	ATT9	unknown	—	—	—
└ 209.28.84.0/24	256	ATT10	unknown	—	—	—
└ 209.28.85.0/24	256	ATT11	unknown	—	—	—
└ 209.28.87.16/28	16	CIA-UNIAO-SAO1	unknown	—	—	—
└ 209.28.87.32/27	32	DUERKOPP1	unknown	—	—	—
└ 209.28.87.64/27	32	MODO29	unknown	—	—	—
└ 209.28.87.128/26	64	BENTSYS8	unknown	—	—	—
└ 209.28.87.192/28	16	BMF24	unknown	—	—	—
└ 209.28.87.224/27	32	SARA-LEE1	unknown	—	—	—
└ 209.28.88.0/24	256	NTC1	unknown	—	—	—
└ 209.28.89.64/28	16	ZILLO-LORENZETTI1	unknown	—	—	—
└ 209.28.89.128/27	32	BOEHLER11	unknown	—	—	—
└ 209.28.89.160/27	32	WARTSILA-DIESEL6	unknown	—	—	—
└ 209.28.89.192/26	64	PERSTORP26	unknown	—	—	—
└ 209.28.90.0/25	128	EDA1	unknown	—	—	—
└ 209.28.91.0/27	32	BENTLEYSYSTEMS7	unknown	—	—	—
└ 209.28.91.32/28	16	VERLIPACK4	unknown	—	—	—
└ 209.28.91.96/28	16	SAAB2	unknown	—	—	—
└ 209.28.91.112/29	8	EVEREST2	unknown	—	—	—
└ 209.28.91.224/27	32	SYQUEST7	unknown	—	—	—
└ 209.28.92.0/26	64	VOLVO10	unknown	—	—	—
└ 209.28.92.128/25	128	MODO27	unknown	—	—	—
└ 209.28.93.0/24	256	TELSTRA2	unknown	—	—	—
└ 209.28.94.0/25	128	NEXSTAR3	unknown	—	—	—
└ 209.28.94.128/26	64	NEXSTAR4	unknown	—	—	—
└ 209.28.94.192/26	64	ENGELHARD7	unknown	—	—	—
└ 209.28.95.0/24	256	TELSTRAUK10	unknown	—	—	—
└ 209.28.96.0/26	64	TELEGROUP10	unknown	—	—	—
└ 209.28.97.64/27	32	SSAB9	unknown	—	—	—
└ 209.28.97.128/27	32	CCNCSI6	unknown	—	—	—
└ 209.28.97.160/28	16	HERMES4	unknown	—	—	—
└ 209.28.97.224/28	16	BMF16	unknown	—	—	—
└ 209.28.98.0/24	256	TELSTRA1	unknown	—	—	—
└ 209.28.99.0/26	64	FERRING8	unknown	—	—	—
└ 209.28.99.128/27	32	CCNCSI4	unknown	—	—	—
└ 209.28.99.192/26	64	MASSIVE4	unknown	—	—	—
└ 209.28.100.0/24	256	SANSABAR5	unknown	—	—	—
└ 209.28.101.0/24	256	SANSABAR6	unknown	—	—	—
└ 209.28.102.0/24	256	SANSABAR7	unknown	—	—	—
└ 209.28.103.128/27	32	POLARELECTRO1	unknown	—	—	—
└ 209.28.104.0/24	256	BIOTECH6	unknown	—	—	—
└ 209.28.105.0/24	256	TELSTRA3	unknown	—	—	—
└ 209.28.108.64/28	16	SOPERCEL2	unknown	—	—	—
└ 209.28.108.96/28	16	BELGOLAISE2	unknown	—	—	—
└ 209.28.111.64/27	32	TELEGROUP12	unknown	—	—	—
└ 209.28.112.0/25	128	PHARMACIA68	unknown	—	—	—
└ 209.28.112.128/27	32	TELEGROUP13	unknown	—	—	—
└ 209.28.112.160/28	16	WARTSILA12	unknown	—	—	—
└ 209.28.113.0/27	32	SSAB10	unknown	—	—	—
└ 209.28.113.128/28	16	PERSTORP23	unknown	—	—	—
└ 209.28.113.160/28	16	TECNOMATIX6	unknown	—	—	—
└ 209.28.114.0/25	128	WARTSILA8	unknown	—	—	—
└ 209.28.114.128/26	64	ABCGOSS1	unknown	—	—	—
└ 209.28.115.32/27	32	GEFANUC2	unknown	—	—	—
└ 209.28.115.64/27	32	WALLENIUS2	unknown	—	—	—
└ 209.28.118.0/27	32	BELGOLAISE1	unknown	—	—	—
└ 209.28.118.64/28	16	VERLIPACK1	unknown	—	—	—
└ 209.28.118.96/28	16	VERLIPACK2	unknown	—	—	—
└ 209.28.118.128/26	64	ABCMAD1	unknown	—	—	—
└ 209.28.119.0/24	256	KNUERR2	unknown	—	—	—
└ 209.28.120.0/27	32	MARLINK26	unknown	—	—	—
└ 209.28.120.32/27	32	WARTSILA15	unknown	—	—	—
└ 209.28.120.64 - 209.28.120.78	15	WARTSILA16	unknown	—	—	—
└ 209.28.120.80/28	16	COLSEGUROS1	unknown	—	—	—
└ 209.28.120.96/28	16	ESTERLINE-TECH5	unknown	—	—	—
└ 209.28.120.112/28	16	FORMILINE1	unknown	—	—	—
└ 209.28.121.0/24	256	CEDEX3	unknown	—	—	—
└ 209.28.122.0/24	256	KNUERR5	unknown	—	—	—
└ 209.28.123.0/26	64	LIBERTY-ATT3	unknown	—	—	—
└ 209.28.124.32/28	16	TECNOMATIX7	unknown	—	—	—
└ 209.28.125.0/26	64	PERSTORP22	unknown	—	—	—
└ 209.28.125.96/28	16	HERMES13	unknown	—	—	—
└ 209.28.126.0/24	256	COTY1	unknown	—	—	—
└ 209.28.127.64/27	32	TEXTRON1	unknown	—	—	—
└ 209.28.127.128/27	32	BAAN25	unknown	—	—	—
└ 209.28.127.192/28	16	VERLIPACK5	unknown	—	—	—
└ 209.28.128.0/24	256	COTY2	unknown	—	—	—
└ 209.28.132.0/24	256	BENTLEY1	unknown	—	—	—
└ 209.28.133.0/24	256	COTY3	unknown	—	—	—
└ 209.28.135.0/24	256	HENKELROCK	unknown	—	—	—
└ 209.28.136.0/25	128	JCREW3	unknown	—	—	—
└ 209.28.136.128/26	64	WARTSILA10	unknown	—	—	—
└ 209.28.137.0/28	16	UOP4	unknown	—	—	—
└ 209.28.137.16/28	16	MOLEX3	unknown	—	—	—
└ 209.28.137.64/27	32	UNITOR4	unknown	—	—	—
└ 209.28.140.0/24	256	NIB4	unknown	—	—	—
└ 209.28.141.0/24	256	FERRING3	unknown	—	—	—
└ 209.28.142.0/24	256	FERRING4	unknown	—	—	—
└ 209.28.143.0/24	256	FERRING5	unknown	—	—	—
└ 209.28.144.0/24	256	FERRING6	unknown	—	—	—
└ 209.28.145.0/24	256	FERRING7	unknown	—	—	—
└ 209.28.146.0/24	256	BENCKISER4	unknown	—	—	—
└ 209.28.147.0/24	256	FAGIBB7	unknown	—	—	—
└ 209.28.148.0/24	256	FAGIBB8	unknown	—	—	—
└ 209.28.149.0/24	256	PHARMACIA45	unknown	—	—	—
└ 209.28.150.0/24	256	PHARMACIA46	unknown	—	—	—
└ 209.28.151.160/28	16	SAPDEMO1	unknown	—	—	—
└ 209.28.152.0/24	256	PERSTORP21	unknown	—	—	—
└ 209.28.153.0/24	256	FINEMBBERN1	unknown	—	—	—
└ 209.28.154.0/28	16	GRIFOLS2	unknown	—	—	—
└ 209.28.155.0/24	256	FINEMB-BERLIN1	unknown	—	—	—
└ 209.28.156.0/24	256	FINEMB-HAMBURG1	unknown	—	—	—
└ 209.28.157.0/24	256	IDCOM1	unknown	—	—	—
└ 209.28.158.0/24	256	SSAB1A	unknown	—	—	—
└ 209.28.159.0/24	256	SSAB2	unknown	—	—	—
└ 209.28.160.0/24	256	SPILLERS10	unknown	—	—	—
└ 209.28.162.0/24	256	FAGIBB15	unknown	—	—	—
└ 209.28.163.32/28	16	NALCO16	unknown	—	—	—
└ 209.28.163.64/28	16	SODRACELL1	unknown	—	—	—
└ 209.28.163.80/28	16	WARTSILA13	unknown	—	—	—
└ 209.28.164.0/24	256	FAGIBB9	unknown	—	—	—
└ 209.28.166.0/24	256	VIRGIN5	unknown	—	—	—
└ 209.28.168.0/24	256	PHARMACIA47	unknown	—	—	—
└ 209.28.169.0/24	256	MODO17	unknown	—	—	—

← Previous1–200 of 298 · page 1 of 2Next →

Composition

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

Announced space

Address share

Announced space

Types across the prefix

65,536 addresses

Type	Addresses	Share	Ranges
Residential	59,321	91%	108
Business	6,215	9.5%	137

Network & registry

Announcement Routing history RPKI & IRR Whois & abuse

Origin network

AS3300

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

RPKI

Route origin authorizations

ROA prefix	ASN	Max len	Anchor	Verdict
209.28.0.0/16	AS3300	/24	ARIN	RPKI valid

IRR

Route objects on the exact prefix

Origin	Registry	Description	Maintainer	Modified
AS3300	REACH	REACH (Customer Route)	MAINT-REACH-NOC	Feb 10, 2017
AS3300	ALTDB	Proxy registration to prevent harm from ARIN-NONAUTH shutdown	MAINT-AS7034	Apr 4, 2022
AS3300	ARIN	BT-GIIB	MNT-INFO	Aug 1, 2025

IRR inside

Route objects inside

Prefix	Origin	Registry	Description	Maintainer	Modified
209.28.0.0/22	AS3300	ARIN	BT-GIIB	MNT-INFO	Aug 1, 2025
209.28.0.0/22	AS3300	NTTCOM	BT CNF	MAINT-BT	Mar 29, 2022
209.28.34.0/24	AS3300	REACH	REACH (Customer Route)	MAINT-REACH-NOC	Aug 3, 2007
209.28.44.0/24	AS3300	REACH	REACH (Customer Route)	MAINT-REACH-NOC	May 12, 2004
209.28.172.0/22	AS3300	NTTCOM	BT CNF	MAINT-BT	Mar 29, 2022

209.28.0.0/16

Announcements

Announcements inside

Registrations in this block

Composition

Address share

Types across the prefix

Network & registry

AS3300

Who has announced this prefix

Routing history

Route origin authorizations

Route objects on the exact prefix

Route objects inside

Registration for this announcement

Abuse contact