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Gridlode
Rank #1,944Updated November 10, 2026

comcast.net

Xfinity - Internet, WiFi, Mobile, TV and Streaming

comcast.net is registered with CSC Corporate Domains, Inc. since September 25, 1997 (29.1 years). The registration expires on September 24, 2027. The site runs on Akamai, Swiper, Akamai Bot Manager and 1 other technologies. Its email security grade is B. Its SSL certificate is issued by Sectigo Limited and is valid for 60 more days.

Domain age
29.1 yrs
Technologies
4
Email security
B
SSL days left
60

Registration

RegistrarCSC Corporate Domains, Inc.
IANA ID299
RegisteredSeptember 25, 1997
ExpiresSeptember 24, 2027
UpdatedSeptember 20, 2026
Statusclient transfer prohibited, server delete prohibited, server transfer prohibited, server update prohibited
Name serversdns101.comcast.net, dns102.comcast.net, dns103.comcast.net, dns104.comcast.net, dns105.comcast.net
DNSSECSigned

DNS records

TypeValueTTL
A96.99.240.16725
MXmx1.mxge.comcast.net 527
MXmx2.mxge.comcast.net 527
MXmx1a1.comcast.net 5027
MXmx1c1.comcast.net 5027
MXmx1h1.comcast.net 5027
MXmx2a1.comcast.net 5027
MXmx2c1.comcast.net 5027
MXmx2h1.comcast.net 5027
NSdns101.comcast.net7200
NSdns102.comcast.net7200
NSdns103.comcast.net7200
NSdns104.comcast.net7200
NSdns105.comcast.net7200
CAAissue 0 amazonaws.com7200
CAAissue 0 sectigo.com7200
TXTyahoo-verification-key=t0ftaXXV8MB1pon3jzauB3Fz5ezusB2l9jy3GVNPQRw=7200
TXTgoogle-site-verification=g7KA0NF2z-1XIBz7vWW88zvVYlJeiG56UPOYHF2tqY07200
TXTgoogle-site-verification=gxiEHT6grgMJE52lhl4OYIt5Q3XpA5qt-8Okrxq-mcE7200
TXTv=spf1 ip4:96.103.146.48/28 ip4:96.102.19.32/28 ip4:96.102.200.0/28 include:_spfv6.comcast.net include:_spf.mdp.comcast.net include:_ipspf.yahoo.com ~all7200
AAAA2001:558:feed:dc:96:99:240:16796

Technology stack

CDN
Akamai
JavaScript library
Swiper
Security
Akamai Bot ManagerHSTS

SSL certificate

ValidValid
IssuerGB, Sectigo Public Server Authentication CA OV R36, Sectigo Limited
ExpiresJanuary 9, 2027
Days remaining60
ProtocolTLSv1.2
Namescomcast.net

Email security

BScore 81/100 across SPF, DMARC, DKIM, MTA-STS and BIMI.
  • warnNo DKIM key found at common selectors (google, selector1, selector2, default, k1, k2, s1, s2, ...). DKIM may still use a custom selector we cannot guess.
  • warnNo BIMI record (optional: shows your logo next to your emails in supporting inboxes).
  • goodSPF record found.
  • goodSPF ends with ~all: servers you have not listed are marked as suspicious (soft fail).
  • goodDMARC policy is reject: mail that fails authentication is blocked.
  • goodDMARC aggregate reports are sent to mailto:[email protected].
  • good8 MX record(s) found.
  • goodMTA-STS is enforced: other servers must use verified TLS when sending you mail.
  • goodTLS-RPT is set up: you receive reports about failed encrypted deliveries.

Homepage metadata

TitleXfinity - Internet, WiFi, Mobile, TV and Streaming
DescriptionSave on high speed internet, mobile phone plans and cable TV services with Xfinity. Enjoy entertainment your way with great deals on Xfinity by Comcast.
Languageen
Canonicalhttps://www.xfinity.com/
IndexableYes
Word count537

About comcast.net

Who is the registrar of comcast.net?

comcast.net is registered with CSC Corporate Domains, Inc. (IANA ID 299).

When does comcast.net expire?

The current registration of comcast.net expires on September 24, 2027. It was first registered on September 25, 1997.

What technology does comcast.net use?

We detected 4 technologies on comcast.net, including Akamai, Swiper, Akamai Bot Manager, HSTS.

Does comcast.net protect its email with SPF and DMARC?

comcast.net scores 81/100 (grade B) for email security. No DKIM key found at common selectors (google, selector1, selector2, default, k1, k2, s1, s2, ...). DKIM may still use a custom selector we cannot guess. No BIMI record (optional: shows your logo next to your emails in supporting inboxes).

What are the name servers of comcast.net?

comcast.net uses dns101.comcast.net, dns102.comcast.net, dns103.comcast.net, dns104.comcast.net, dns105.comcast.net.