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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:      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:        abuse@comcast.net
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:        CNIPEO-Ip-registration@cable.comcast.com
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 2001:559:c28f::/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
200.215.43.144	AS8167 V tal	`6.47ms` from Curitiba, BR
77.239.101.0	AS213877 U1 DIGITAL SERVICES LTD	`0.16ms` from Frankfurt am Main, DE
133.18.137.144	AS24282 KAGOYA JAPAN Inc.	`1.10ms` from Osaka, JP
45.169.173.0	AS268701 VIVALINK INTERNET LTDA	`1.80ms` from Rio de Janeiro, BR
119.149.4.0	AS38091 LG HelloVision Corp.	`0.90ms` from Seoul, KR
222.110.14.96	AS4766 Korea Telecom	`1.25ms` from Seoul, KR
116.88.79.144	AS55430 Starhub Ltd	`2.61ms` from Singapore, SG
154.241.74.208	AS36947 Telecom Algeria	`9.25ms` from Valencia, ES
129.132.89.192	AS559 SWITCH	`0.49ms` from Zuerich, CH
214.79.50.224	AS5972 United States Department of Defense (DoD)	`4.60ms` from Ashburn, US
120.52.81.64	AS133119 China Unicom IP network	`3.95ms` from Beijing, CN
104.97.27.224	AS16625 Akamai Technologies, Inc.	`0.21ms` from Chennai, IN
104.181.125.112	AS7018 AT&T Enterprises, LLC	`3.59ms` from Chicago, US
23.119.116.144	AS7018 AT&T Enterprises, LLC	`19.47ms` from Chicago, US
92.79.130.96	AS3209 Vodafone GmbH	`5.84ms` from Duesseldorf, DE
23.242.152.0	AS20001 Charter Communications Inc	`4.76ms` from Los Angeles, US
154.70.22.176	AS15399 Wananchi Group (Kenya) Limited	`2.74ms` from Nairobi, KE
37.194.53.48	AS31200 Novotelecom Ltd	`1.17ms` from Novosibirsk, RU
37.120.169.16	AS197540 netcup GmbH	`0.33ms` from Nuernberg, DE
87.25.150.0	AS3269 Telecom Italia S.p.A.	`9.97ms` from Rome, IT
159.138.90.240	AS136907 HUAWEI CLOUDS	`0.66ms` from Singapore, SG
222.164.18.128	AS55430 Starhub Ltd	`2.21ms` from Singapore, SG
191.32.231.48	AS18881 TELEFÔNICA BRASIL S.A	`2.21ms` from São Paulo, BR
1.160.84.112	AS3462 Data Communication Business Group	`0.91ms` from Taipei, TW
34.102.252.64	AS396982 Google LLC	`0.07ms` from Turin, IT

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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