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Data as of Nov 5, 2026

205.245.0.0/18

No anonymizer space · no proxy exits in 30 days

CenturyLink Communications, LLC · space held by Cogent Communications, LLC

Announcement
this exact prefix
No RPKI
Announced by
AS2379
Type
Residential
96% of it

Announcements

Less specific

Covering announcements

PrefixOriginTypeProxy exitsHolderRPKI
205.240.0.0/13AS174Internet provider34
3 always on
Cogent Communications, LLC
More specific

Announcements inside

PrefixOriginTypeHolderRPKI
205.245.2.0/24
since Oct 2015
AS209ResidentialCogent Communications, LLC
via Sprint DSL Network
205.245.41.0/24
since Apr 2015
AS209ResidentialCogent Communications, LLC
via Sprint-United Telephone of Florida
205.245.44.0/24
since May 2005
AS2379ResidentialCogent Communications, LLC
via Sprint-United Telephone of Florida

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
205.240.0.0/13524,288COGENT-205-240-0Cogent Communications, LLC (COGC) · USDirect AllocationApr 24, 1995abuse@cogentco.com
└ 205.245.0.0/1816,384SPRINT-CDF500-7Sprint-United Telephone of Florida (UTOF) · USReallocatedApr 19, 1999—
└ 205.245.0.0/24256205-245-0SSRESORTSunknown———
└ 205.245.2.0/24256DSL-NET007-FLSprint DSL Network (SDSL) · USReallocatedJan 8, 2002—
└ 205.245.3.0/24256205-245-3WATERBCunknown———
└ 205.245.6.0/23512205CCCYBERSTunknown———
└ 205.245.8.0/24256205-245-8ASGunknown———
└ 205.245.9.0/24256205CCOSUSAunknown———
└ 205.245.10.0/24256205-245-10FLREALTORunknown———
└ 205.245.11.0/24256205-245-11IFRAMENETunknown———
└ 205.245.14.32/2732205CCDAPunknown———
└ 205.245.14.64/2664205CCFOSunknown———
└ 205.245.14.128/2732205CCPSRunknown———
└ 205.245.17.0/24256205-245-17HTNETunknown———
└ 205.245.19.0/24256205CCWEISCOunknown———
└ 205.245.20.0/24256205-245-20CHSunknown———
└ 205.245.21.0/24256205-245-21GULFACCunknown———
└ 205.245.22.0/24256205-245-22FLREATORunknown———
└ 205.245.25.0 - 205.245.26.255512205CCNSSunknown———
└ 205.245.27.0/2664205CC800PARTYunknown———
└ 205.245.27.64/2664205-245-27-64FTSINTLunknown———
└ 205.245.28.0/24256205-245-28NCHOSPunknown———
└ 205.245.29.0/24256205-245-29CCCCunknown———
└ 205.245.30.0/24256205-245-30SSRESORTSunknown———
└ 205.245.31.0 - 205.245.38.2552,048IAG-204-245-31-38unknown———
└ 205.245.31.32/2732HALE-CDF51F20unknown———
└ 205.245.31.64/2732PEGASUS-CDF51F40unknown———
└ 205.245.34.0/24256SEO-CDF52200unknown———
└ 205.245.35.0/24256SEO-CDF52300unknown———
└ 205.245.37.0/24256MJKSW-CDF52500unknown———
└ 205.245.38.0/24256DUDA-CDF52600unknown———
└ 205.245.39.0/24256IAG-39-0Aunknown———
└ 205.245.40.0/24256SPRINT-CDF500-7unknown———
└ 205.245.41.0/24256205IRDG1IRDG, Inc. (IRDGIN) · USReassignedNov 16, 1999—
└ 205.245.42.0/24256GOCO205-245-42unknown———
└ 205.245.44.0/24256205-245-44VERTVertiquest / Leadmaster (VERTIQ) · USReassignedJun 28, 2002ronm@vertiquest.com
└ 205.245.45.0/24256205CCTNTONLINEunknown———
└ 205.245.47.0 - 205.245.48.255512205-245-48NCHOSPunknown———
└ 205.245.50.0/24256205-245-50HALLIDAYunknown———
└ 205.245.51.0/24256205-245-51K2unknown———
└ 205.245.52.128/2664205-245-52AMERIVESTunknown———
└ 205.245.53.0 - 205.245.54.255512204ZOOMPH1unknown———
└ 205.245.55.0/24256205CFLC1unknown———
└ 205.245.56.0/24256MTC1unknown———
└ 205.245.59.0/24256205-245-59OCPRAunknown———
└ 205.245.60.0/24256SPRINT-D002A8-6unknown———
└ 205.245.61.0/24256205-245-21CRYWINDunknown———
└ 205.245.62.0/24256205-245-62ARROWunknown———
└ 205.245.62.128/2732HENDRY-RMC-NET-1unknown———
└ 205.245.62.160/2732FIRSTBANK-IND-NET-1unknown———
└ 205.245.62.192/2732STUART-PROP-NET-1unknown———
└ 205.245.63.0/2732205SISIunknown———
└ 205.245.63.32/2732205CLTF1unknown———
└ 205.245.63.96/2732205CCSBHCunknown———
└ 205.245.63.128/2732205CCTGRunknown———
└ 205.245.63.192/2664205CCGESunknown———

Composition

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

Announced space

Address share

Announced space

Types across the prefix

16,384 addresses
TypeAddressesShareRanges
Residential15,77696%14
Business6083.7%15

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
IPv4 market

Holder

Holder in the market →
Organization
Cogent Communications, LLC
Handle
COGC
Range
205.240.0.0/13
Registration type
Direct Allocation
Record created
Apr 24, 1995
Legacy
yes
Reallocated to
Sprint-United Telephone of Florida (UTOF)
Reallocated range
205.245.0.0/18
Reallocated
Apr 19, 1999
Origin network

AS2379

US
Name
CenturyLink Communications, LLC
Type
Internet provider
Registered
Feb 3, 1993
Domain
centurylink.com
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed