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Data as of Nov 7, 2026

66.240.0.0/18

No anonymizer space · no proxy exits in 30 days

Comcast Cable Communications, LLC

Announcement
this exact prefix
RPKI valid
Announced by
AS7922
Type
Residential
60% of it

Announcements

More specific

Announcements inside

PrefixOriginTypeHolderRPKI
66.240.58.0/24
since Oct 2015
AS33491UnknownComcast Cable Communications, LLC

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
66.240.0.0/1816,384CTI-3TELComcast Cable Communications, LLC (CCCS) · USDirect AllocationFeb 21, 2002abuse@comcast.net
└ 66.240.0.0/2664CMA1-PDPGROUP-1unknown———
└ 66.240.0.96/2816CMA1-NEEDLESC-1unknown———
└ 66.240.0.112/2816CMA1-LAMONTDI-1unknown———
└ 66.240.0.176/2816CMA1-VERMEERS-1unknown———
└ 66.240.1.32/298CMA1-WORCESTE-2unknown———
└ 66.240.1.96/2816CMA1-LEISUREW-1unknown———
└ 66.240.1.112/2816CMA1-FACILITY-1unknown———
└ 66.240.1.128/2732CMA1-FOURSEAS-4unknown———
└ 66.240.1.160/2816CMA1-WORCESTE-1unknown———
└ 66.240.1.208/2816CMA1-RIPKENBA-4unknown———
└ 66.240.1.224/298CMA1-RIPKENBA-1unknown———
└ 66.240.1.232/298CMA1-RIPKENBA-2unknown———
└ 66.240.2.0/24256CMA1-SAILOR-1unknown———
└ 66.240.3.0/24256CMA1-AMERICAN-2unknown———
└ 66.240.5.0/24256CMA1-NTACHEAD-1unknown———
└ 66.240.6.112/2816CMA1-OPTICALC-1unknown———
└ 66.240.6.128/2664CMA1-CITYOFAL-1unknown———
└ 66.240.6.192/2664CMA1-ORBITALT-1unknown———
└ 66.240.8.0/2816CMA1-ATLANTIC-1unknown———
└ 66.240.8.32/298CMA1-NEEDLESC-1unknown———
└ 66.240.8.40/298CMA1-FIRSTSER-1unknown———
└ 66.240.8.48/2816CMA1-RIPKENBA-3unknown———
└ 66.240.8.64/2816HARFORDB-1unknown———
└ 66.240.8.80/2816CMA1-AAICORPO-2unknown———
└ 66.240.8.96/2816CMA1-WILLIAMSS-1unknown———
└ 66.240.8.112/298CMA1-ANNARUND-2unknown———
└ 66.240.8.120/298CMA1-ANNARUND-3unknown———
└ 66.240.8.128/298CMA1-ANNARUND-4unknown———
└ 66.240.8.136/298CMA1-ANNARUND-5unknown———
└ 66.240.8.144/2816CMA1-LIFEBRID-3unknown———
└ 66.240.8.160/2816CMA1-CALVINBT-1unknown———
└ 66.240.8.176/2816CMA1-HOWARDCO-1unknown———
└ 66.240.8.192/298CMA1-PERFERMA-2unknown———
└ 66.240.8.200/298CMA1-ANNARUND-6unknown———
└ 66.240.8.208/2816CMA1-SIDUS-1unknown———
└ 66.240.8.224/2732CMA1-CONTINENTAL-1unknown———
└ 66.240.9.0/2816CMA1-ECS-1unknown———
└ 66.240.10.0/24256CMA1-GOUCHERC-1unknown———
└ 66.240.11.0/25128CMA1-TENABLES-3unknown———
└ 66.240.11.128/25128CMA1-FOURSEAS-3unknown———
└ 66.240.12.0/24256CMA1-AAICORPO-1unknown———
└ 66.240.13.0/24256CMA1-ANNEARUN-2unknown———
└ 66.240.14.0/24256CMA1-ANNEARUN-1unknown———
└ 66.240.15.0/24256CMA1-CONTREALTY-1unknown———
└ 66.240.17.0/2816CMA1-DENVERSC-1unknown———
└ 66.240.17.16/2816CMA1-BRONCOSI-1unknown———
└ 66.240.20.0/2664CMA1-CUNNINGH-1unknown———
└ 66.240.20.64/2816CMA1-CALDWELL-1unknown———
└ 66.240.20.96/2816CMA1-ROSELLEP-1unknown———
└ 66.240.20.112/2816CMA1-INFRAGIS-1unknown———
└ 66.240.20.128/25128CMA1-TMAINC-2unknown———
└ 66.240.21.80/2816CMA1-UNIONTWP-1unknown———
└ 66.240.22.0/24256CMA1-STBARNAB-1unknown———
└ 66.240.23.0/2816CMA1-BLOOMFIE-1unknown———
└ 66.240.24.0/221,024CMA1-SANJOSES-1unknown———
└ 66.240.28.0/23512CMA1-ACKLINKI-1unknown———
└ 66.240.30.224/2732CMA1-SJHS-3unknown———
└ 66.240.31.0/298CMA1-BUENAREG-1unknown———
└ 66.240.31.8/298CMA1-LARCHMONT-1unknown———
└ 66.240.31.16/2816CMA1-SOUTHJER1-1unknown———
└ 66.240.31.96/298CMA1-EGGHARBO-2unknown———
└ 66.240.31.112/2816CMA1-RESORTS-1unknown———
└ 66.240.31.192/2816CMA1-DIAGNOST-1unknown———
└ 66.240.31.208/298CMA1-DIAGNOST-1unknown———
└ 66.240.31.216/298CMA1-COMCASTDA-1unknown———
└ 66.240.33.0/2816CMA1-DELSEARE-1unknown———
└ 66.240.33.16/2816CMA1-ATLANTIC-2unknown———
└ 66.240.33.32/2732ATLANTIC-1unknown———
└ 66.240.33.64/2816CMA1-TRUMPENT-1unknown———
└ 66.240.33.80/2816CMA1-TABERNAC-1unknown———
└ 66.240.33.128/2664CMA1-TRUMPENT-2unknown———
└ 66.240.33.192/2664CMA1-COMCASTNS-1unknown———
└ 66.240.34.0/24256CMA1-BUCKSCOU-1unknown———
└ 66.240.35.0/2816CMA1-UPPERPER-1unknown———
└ 66.240.35.24/298CMA1-PACABLEN-1unknown———
└ 66.240.35.48/2816CMA1-UPPERMER-1unknown———
└ 66.240.35.64/298CMA1-DOUBLETR-1unknown———
└ 66.240.35.80/2816CMA1-CITIZENS-1unknown———
└ 66.240.35.96/2732CMA1-UNIVESTC-1unknown———
└ 66.240.35.128/2664CMA1-NORTHPEN-1unknown———
└ 66.240.35.192/2664CMA1-UNIVILLA1-1unknown———
└ 66.240.38.0/2732CMA1-LANCASTE-2unknown———
└ 66.240.38.32/2732DAVIDSBR-1unknown———
└ 66.240.38.64/2664FOURSEAS-1unknown———
└ 66.240.38.128/2732CMA1-UPPERPER-2unknown———
└ 66.240.38.176/2816CMA1-CITIZENS-2unknown———
└ 66.240.38.192/2816CMA1-NORTHPEN-2unknown———
└ 66.240.39.160/2816CMA1-STJOSEPH-1unknown———
└ 66.240.40.0/212,048CMA1-BUCKSCOU-2unknown———
└ 66.240.49.0/25128CMA1-CHABOTSP-1unknown———
└ 66.240.49.128/25128CMA1-MULPITAS-1unknown———
└ 66.240.50.0/24256CMA1-SPARTANS-1unknown———
└ 66.240.51.64/298CMA1-FRYSNETW-1unknown———
└ 66.240.51.80/2816CMA1-XSTRATAR-1unknown———
└ 66.240.51.96/2732CMA1-KNTCPAPP-1unknown———
└ 66.240.51.128/2816CMA1-24HOUR-1unknown———
└ 66.240.52.0/24256CMA1-HACKERSC-1unknown———
└ 66.240.53.0/24256CMA1-FRYSELEC-2unknown———
└ 66.240.55.0/25128CMA1-AURORA-1unknown———
└ 66.240.57.0/2732CMA1-OCEAMERI1-1unknown———
└ 66.240.57.32/2732CMA1-ARLINGTO-1unknown———
└ 66.240.57.64/298CMA1-OCEAMERI-2unknown———
└ 66.240.57.80/2816CMA1-LAKECOMM-1unknown———
└ 66.240.57.96/2732CMA1-MCENERYE-1unknown———
└ 66.240.57.128/25128MISHAWAK-1unknown———
└ 66.240.58.0/24256CMA1-PARCELIN-1Parcelink Systems Inc (C01052128) · USReassignedMar 31, 2005abuse@comcast.net
via CTI-3TEL
└ 66.240.59.0/24256CMA1-CONCORDI-1unknown———
└ 66.240.60.0/2732CMA1-WINDOWTO-1unknown———
└ 66.240.60.32/2816CMA1-DOWNERSG-1unknown———
└ 66.240.60.48/2816CMA1-HAMMONDP-1unknown———
└ 66.240.60.64/2732CMA1-VILLAGEO-1unknown———
└ 66.240.60.112/298CMA1-MCHENRYH-1unknown———
└ 66.240.60.128/2664CMA1-GLENBROO-1unknown———
└ 66.240.60.208/2816CMA1-DUPAGE-1unknown———
└ 66.240.60.224/2816CMA1-CSLBE-1unknown———
└ 66.240.60.240/2816CMA1-ZION-1unknown———
└ 66.240.61.0/24256CMA1-PENNHARR-1unknown———
└ 66.240.62.64/2816CMA1-FERRARA-1unknown———
└ 66.240.62.128/2816CMA1-BEACON-1unknown———
└ 66.240.62.144/2816CMA1-CHSD218-1unknown———
└ 66.240.62.176/2816CMA1-SD218-1unknown———
└ 66.240.62.192/2732CMA1-CCSD-1unknown———
└ 66.240.62.240/2816CMA1-VOR-1unknown———
└ 66.240.63.0/24256CMA1-SUI-1unknown———

A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.

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
Residential9,87260%19
Business6,25638%143
Unknown2561.6%1

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Origin network

AS7922

US
Name
Comcast Cable Communications, LLC
Type
Internet provider
Registered
Feb 14, 1997
Domain
comcast.com
Website
corporate.comcast.com/
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed