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AS21508

Comcast Cable Communications, LLC

AS21508 is Comcast Cable Communications, LLC (comcast.com). It announces 70,400 IPv4 addresses in 17 prefixes, and 61 IPv6 prefixes.

United States· ARIN· allocated 2001-05-16· isp

70,400
IPv4 addresses announced
17
IPv4 prefixes
61
IPv6 prefixes
91.03%
of its routes RPKI-valid
70,400
of its IPv4 geolocated
1
country

Where its space is

The IPv4 it announces that IP Geolocation places, by country. A /24 counts for the AS announcing most of it.

  1. United States70,400 · 100.00%

Registry record

Its ASN Whois record, as the registry publishes it.

handle
COMCAST-21508
name
Comcast Cable Communications, LLC
org
CCCS
org name
Comcast Cable Communications, LLC
org address
1800 Bishops Gate Blvd, Mt Laurel, NJ, 08054
org city
Mt Laurel
org country
US
country
US
source
arin
created
2001-05-16
updated
2021-01-25
abuse name
Network Abuse and Policy Observance
abuse email
abuse@comcast.net
abuse phone
+1-888-565-4329
abuse kind
role
abuse city
Mount Laurel
abuse country
US
admin name
Comcast Cable Communications Inc
admin email
CNIPEO-Ip-registration@cable.comcast.com
admin phone
+1-856-792-2300
admin kind
role
admin city
Mount Laurel
admin country
US
tech name
Comcast Cable Communications Inc
tech email
CNIPEO-Ip-registration@cable.comcast.com
tech phone
+1-856-792-2300
tech kind
role
tech city
Mount Laurel
tech country
US

What the databases see

Addresses each address-keyed database holds in the IPv4 it announces, as a share of that space, with its largest providers. Counts overlap.

IPv4 prefixes

Every IPv4 prefix BGP Route saw it announce. A prefix another AS also announces says so.

17 prefixes
PREFIXCOUNTRYRPKIPEERSFIRST SEEN
50.204.101.0/24United Statesvalid172026-10-02
50.205.217.0/24United Statesvalid172026-10-02
50.216.229.0/24United Statesvalid172026-10-02
50.217.1.0/24United Statesvalid172026-10-02
50.217.207.0/24United Statesvalid172026-10-02
50.218.47.0/24United Statesvalid172026-10-02
50.228.113.0/24United Statesvalid172026-10-02
50.229.113.0/24United Statesvalid172026-10-02
50.229.114.0/24United Statesvalid172026-10-02
50.235.34.0/24United Statesvalid172026-10-02
141.104.0.0/16United Statesnot found172026-10-02
157.240.147.0/24United Statesnot found172026-10-02
157.240.148.0/24United Statesnot found172026-10-02
173.242.174.0/24United Statesnot found172026-10-02
198.90.112.0/22United Statesnot found172026-10-02
204.194.47.0/24United Statesnot found172026-10-02
205.223.19.0/24United Statesnot found172026-10-02

IPv6 prefixes

Every IPv6 prefix BGP Route saw it announce.

61 prefixes
PREFIXCOUNTRYRPKIPEERSFIRST SEEN
2001:559:8a::/48United Statesvalid202026-10-02
2001:559:c0::/48United Statesvalid202026-10-02
2001:559:f7::/48United Statesvalid202026-10-02
2001:559:220::/48United Statesvalid202026-10-02
2001:559:243::/48United Statesvalid202026-10-02
2001:559:280::/48United Statesvalid202026-10-02
2001:559:37d::/48United Statesvalid202026-10-02
2001:559:3ac::/48United Statesvalid202026-10-02
2001:559:3b9::/48United Statesvalid202026-10-02
2001:559:3c8::/48United Statesvalid202026-10-02
2001:559:40a::/48United Statesvalid202026-10-02
2001:559:49a::/48United Statesvalid202026-10-02
2001:559:49b::/48United Statesvalid202026-10-02
2001:559:53c::/48United Statesvalid202026-10-02
2001:559:5c9::/48United Statesvalid202026-10-02
2001:559:5db::/48United Statesvalid202026-10-02
2001:559:72b::/48United Statesvalid202026-10-02
2001:559:73c::/48United Statesvalid202026-10-02
2001:559:788::/48United Statesvalid202026-10-02
2001:559:78a::/48United Statesvalid202026-10-02
2001:559:79d::/48United Statesvalid202026-10-02
2001:559:79e::/48United Statesvalid202026-10-02
2001:559:7a7::/48United Statesvalid202026-10-02
2001:559:7db::/48United Statesvalid202026-10-02
2001:559:804c::/48United Statesvalid202026-10-02
2001:559:81bf::/48United Statesvalid202026-10-02
2001:559:81d7::/48United Statesvalid202026-10-02
2001:559:81d8::/48United Statesvalid202026-10-02
2001:559:8201::/48United Statesvalid202026-10-02
2001:559:82fd::/48United Statesvalid202026-10-02
2001:559:833e::/48United Statesvalid202026-10-02
2001:559:8416::/48United Statesvalid202026-10-02
2001:559:841c::/48United Statesvalid202026-10-02
2001:559:8445::/48United Statesvalid202026-10-02
2001:559:8535::/48United Statesvalid202026-10-02
2001:559:85c1::/48United Statesvalid202026-10-02
2001:559:85ff::/48United Statesvalid202026-10-02
2001:559:8604::/48United Statesvalid202026-10-02
2001:559:871a::/48United Statesvalid202026-10-02
2001:559:875f::/48United Statesvalid202026-10-02
2001:559:8773::/48United Statesvalid202026-10-02
2001:559:87b2::/48United Statesvalid202026-10-02
2001:559:c071::/48United Statesvalid202026-10-02
2001:559:c0f6::/48United Statesvalid202026-10-02
2001:559:c0f7::/48United Statesvalid202026-10-02
2001:559:c10a::/48United Statesvalid202026-10-02
2001:559:c174::/48United Statesvalid202026-10-02
2001:559:c1a5::/48United Statesvalid202026-10-02
2001:559:c1ca::/48United Statesvalid202026-10-02
2001:559:c28f::/48United Statesvalid202026-10-02
2001:559:c290::/48United Statesvalid202026-10-02
2001:559:c2a7::/48United Statesvalid202026-10-02
2001:559:c344::/48United Statesvalid202026-10-02
2001:559:c3e9::/48United Statesvalid202026-10-02
2001:559:c458::/48United Statesvalid202026-10-02
2001:559:c45f::/48United Statesvalid202026-10-02
2001:559:c460::/48United Statesvalid202026-10-02
2001:559:c4db::/48United Statesvalid202026-10-02
2001:559:c4f6::/48United Statesvalid202026-10-02
2001:559:c515::/48United Statesvalid202026-10-02
2001:559:c538::/48United Statesvalid202026-10-02
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