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Data as of Nov 10, 2026

208.39.128.0/18

No anonymizer space · no proxy exits in 30 days

Comcast Cable Communications, LLC

Announcement
this exact prefix
RPKI valid
Announced by
AS7922
Type
Residential
75% 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
208.39.128.0/1816,384CTI-2TELComcast Cable Communications, LLC (CCCS) · USDirect AllocationNov 13, 2000abuse@comcast.net
└ 208.39.129.32/2816NEWCASTL-2unknown———
└ 208.39.129.128/25128CMA1-NEWCASTL-1unknown———
└ 208.39.131.0/24256CMA1-MORRISNI-1unknown———
└ 208.39.134.16/2816CMA1-MISSABAY-1unknown———
└ 208.39.134.40/298CMA1-TMAINC-1unknown———
└ 208.39.136.128/2664CMA1-CPS-1unknown———
└ 208.39.137.0/24256CMA1-CHERRYHILLSD-1unknown———
└ 208.39.138.160/2732CMA1-HENSCHEL-1unknown———
└ 208.39.141.0/2816CMA1-CORMANCO-2unknown———
└ 208.39.141.16/298CMA1-CARROLLC-1unknown———
└ 208.39.141.80/2816CMA1-UCHSBELA-1unknown———
└ 208.39.141.160/2816CMA1-ATLANTIC-1unknown———
└ 208.39.141.176/2816CMA1-CALVERTH-1unknown———
└ 208.39.142.0/25128CMA1-HOWARDCO-2unknown———
└ 208.39.146.0/24256CMA1-ATLANTIC-1unknown———
└ 208.39.147.128/2732CMA1-BALLY-2unknown———
└ 208.39.147.160/2732CMA1-CAESAR-2unknown———
└ 208.39.160.128/2664CMA1-LBOE-3unknown———
└ 208.39.161.16/298CMA1-COOPERLE-1unknown———
└ 208.39.161.32/2732CMA1-ACCOUNTR-2unknown———
└ 208.39.161.64/2816CMA1-BORDENTO-1unknown———
└ 208.39.161.80/298CMA1-SOUTHJER-1unknown———
└ 208.39.161.112/2816CMA1-SOMERSPO-1unknown———
└ 208.39.161.128/2732CMA1-SOUTHJER-2unknown———
└ 208.39.161.160/2816CMA1-RESORTSN-1unknown———
└ 208.39.161.176/2816CMA1-ATLANTIC-1unknown———
└ 208.39.164.16/2816CMA1-LANCASTE-1unknown———
└ 208.39.164.48/2816CMA1-LANCASTE-3unknown———
└ 208.39.164.72/298CMA1-ANSWERTH-1unknown———
└ 208.39.164.80/2816FOOTLOCK-1unknown———
└ 208.39.164.112/298CMA1-GOLDEYBE-1unknown———
└ 208.39.164.120/298CMA1-COMCASTCO-1unknown———
└ 208.39.164.128/2664CMA1-SOUDERTO-1unknown———
└ 208.39.165.0/24256CMA1-SCRANTON-1unknown———
└ 208.39.169.0/2816CMA1-EPRIZECO-1unknown———
└ 208.39.169.16/298CMA1-PHNSINCO-1unknown———
└ 208.39.169.32/2816CMA1-SMARTBUY-1unknown———
└ 208.39.169.48/298CMA1-HOLCIMIN-1unknown———
└ 208.39.169.56/298CMA1-LASERDES-1unknown———
└ 208.39.169.64/2732CMA1-CITYOFAN-1unknown———
└ 208.39.169.96/2732CMA1-WAYNECOU-2unknown———
└ 208.39.169.128/298CMA1-RMSSERV-1unknown———
└ 208.39.169.136/298CMA1-WAYNECOU-3unknown———
└ 208.39.169.144/298CMA1-CITYOFRO-1unknown———
└ 208.39.169.152/298CMA1-NEWVOLUN-1unknown———
└ 208.39.169.168/298CMA1-PRIVATET-1unknown———
└ 208.39.169.192/298CMA1-NATIONAL-1unknown———
└ 208.39.169.200/298CMA1-MEASUREM-1unknown———
└ 208.39.169.208/2816CMA1-CHELSEAH-1unknown———
└ 208.39.169.224/2816CMA1-MACOMBCO-1unknown———
└ 208.39.169.240/298CMA1-INTERNAT-1unknown———
└ 208.39.171.0/2664CMA1-CITYOFTA-1unknown———
└ 208.39.171.64/2732CMA1-CHARTERT-1unknown———
└ 208.39.171.96/2732CMA1-BLOOMFIE-1unknown———
└ 208.39.171.128/2732CMA1-SOAVE-1unknown———
└ 208.39.171.160/2816CMA1-DIAMOND-1unknown———
└ 208.39.171.176/2816CMA1-DOMINO-1unknown———
└ 208.39.171.192/2664CMA1-TORCA-1unknown———
└ 208.39.173.0/2816CMA1-METROCAS-1unknown———
└ 208.39.173.32/2732CMA1-BALTIMOR-1unknown———
└ 208.39.173.96/2816CMA1-UNIVERSI-1unknown———
└ 208.39.173.112/2816CMA1-BALLYSFI-1unknown———
└ 208.39.173.128/2816CMA1-CUSTOMDI-1unknown———
└ 208.39.173.144/2816CMA1-FERRISBA-1unknown———
└ 208.39.173.160/2816CMA1-BALTIMOR-1unknown———
└ 208.39.173.176/2816CMA1-WICOMICO-1unknown———
└ 208.39.174.0/24256CMA1-FOURSEAS-4unknown———
└ 208.39.180.0/23512CMA1-ELIZABET-2unknown———
└ 208.39.182.0/23512CMA1-ELIZABET-1unknown———

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
Residential12,28875%30
Business4,09625%77

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