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Summary

Country	United States
Domain	comcast.com
ASN	AS21508
Registry	ARIN
ID	COMCAST6NET

WHOIS Details

V6NetHandle:    NET6-2001-558-1
OrgID:          CCCS
Parent:         NET6-2001-400-0
NetName:        COMCAST6NET
NetRange:       2001:558:: - 2001:55F:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF
NetType:        allocation
Comment:        CC1
Comment:        -----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
RegDate:        2003-01-06
Updated:        2025-11-06
Source:         ARIN


OrgID:          CCCS
OrgName:        Comcast Cable Communications, LLC
CanAllocate:    
Street:         1800 Bishops Gate Blvd
City:           Mt Laurel
State/Prov:     NJ
Country:        US
PostalCode:     08054
RegDate:        2001-09-18
Updated:        2020-11-18
OrgAdminHandle: IC161-ARIN
OrgTechHandle:  IC161-ARIN
OrgAbuseHandle: NAPO-ARIN
OrgRoutingHandle:   ROUTI25-ARIN
Source:         ARIN


POCHandle:      IC161-ARIN
IsRole:         Y
LastName:       Comcast Cable Communications Inc
FirstName:      
Street:         1800 Bishops Gate Blvd
City:           Mount Laurel
State/Prov:     NJ
Country:        US
PostalCode:     08054
RegDate:        2002-06-12
Updated:        2025-09-19
OfficePhone:    +1-856-792-2300
Mailbox:        [email protected]
Source:         ARIN


POCHandle:      NAPO-ARIN
IsRole:         Y
LastName:       Network Abuse and Policy Observance
FirstName:      
Street:         1800 Bishops Gate Blvd
City:           Mount Laurel
State/Prov:     NJ
Country:        US
PostalCode:     08054
RegDate:        2002-09-30
Updated:        2025-05-21
OfficePhone:    +1-888-565-4329
Mailbox:        [email protected]
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 2001:559:81bf::/48

No nearby ranges found.

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.

Useful for Cybersecurity

Read more

Pingable IPs

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address	ASN	Details
79.202.172.32	AS3320 Deutsche Telekom AG	`8.21ms` from Frankfurt am Main, DE
112.133.70.0	AS9946 KCTV JEJU BROADCASTING	`9.23ms` from Incheon, KR
2.57.204.192	AS197522 Kaluska informatsiyna merezha LLC	`8.03ms` from Kyiv, UA
192.248.171.224	AS20473 The Constant Company, LLC	`0.12ms` from London, GB
120.157.145.208	AS1221 Telstra Limited	`11.32ms` from Melbourne, AU
47.204.210.144	AS5650 Frontier Communications of America, Inc.	`5.71ms` from Miami, US
108.52.98.112	AS701 Verizon Business	`1.85ms` from Philadelphia, US
73.63.222.32	AS7922 Comcast Cable Communications, LLC	`5.44ms` from Santa Clara, US
211.45.237.32	AS3786 LG DACOM Corporation	`2.15ms` from Seoul, KR
4.147.155.64	AS8075 Microsoft Corporation	`0.73ms` from Sydney, AU
60.153.126.176	AS17676 SoftBank Corp.	`3.74ms` from Tokyo, JP
39.136.148.192	AS9808 China Mobile Communications Group Co., Ltd.	`2.49ms` from Wuhan, CN
73.8.239.160	AS7922 Comcast Cable Communications, LLC	`5.12ms` from Chicago, US
180.198.28.224	AS18126 Chubu Telecommunications Company, Inc.	`5.03ms` from Osaka, JP
67.171.165.32	AS7922 Comcast Cable Communications, LLC	`6.10ms` from Portland, US
3.236.211.240	AS14618 Amazon.com, Inc.	`0.40ms` from Reston, US
143.225.175.112	AS137 Consortium GARR	`6.36ms` from Rome, IT
52.9.145.224	AS16509 Amazon.com, Inc.	`0.13ms` from San Jose, US
187.235.242.96	AS8151 UNINET	`4.80ms` from Santiago de Queretaro, MX
36.224.166.64	AS3462 Data Communication Business Group	`1.29ms` from Taipei, TW
210.243.202.80	AS4780 Digital United Inc.	`1.27ms` from Taipei, TW
179.38.196.192	AS22927 Telefonica de Argentina	`2.43ms` from Buenos Aires, AR
64.92.44.0	AS6300 Fidium	`7.08ms` from Dallas, US
78.43.201.48	AS3209 Vodafone GmbH	`8.54ms` from Frankfurt am Main, DE
82.30.213.80	AS5089 Virgin Media Limited	`11.00ms` from Maidenhead, GB

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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