Is comcast.net a valid email domain?
comcast.net has working mail routing: 8 MX records pointing, led by mx2.mxge.comcast.net.
It is a free, public mailbox provider, and it is not on our disposable list.
SPF is published and ends with ~all. DMARC is set to reject.
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MX records
| Priority | Mail server | Resolves to |
|---|---|---|
| 5 | mx2.mxge.comcast.net | 96.102.18.147 |
| 5 | mx1.mxge.comcast.net | 96.102.157.180 |
| 50 | mx1a1.comcast.net | 96.103.145.163 |
| 50 | mx2a1.comcast.net | 96.103.145.162 |
| 50 | mx1c1.comcast.net | 96.102.18.147 |
| 50 | mx2c1.comcast.net | 96.102.18.146 |
| 50 | mx1h1.comcast.net | 96.102.157.181 |
| 50 | mx2h1.comcast.net | 96.102.157.180 |
SPF
Record published
v=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 ~all
DMARC
Policy: reject
v=DMARC1;p=reject;sp=reject;rua=mailto:dmarc-rua@dmarctest.comcast.net
Disposable?
No, not on our disposable list.
Free provider?
Yes, a free public mailbox provider.
What this means for your email list
Is a free-provider address a problem?
No: plenty of genuine customers use comcast.net. For business-to-business sales a free address can mean a personal contact instead of a work one, so segment these separately if that matters to you. The address itself still needs checking for typos and dead mailboxes.
Sender authentication
comcast.net has a strict DMARC policy (reject): mail that fails authentication is refused, which protects its brand from spoofing and means anyone sending as comcast.net must have SPF and DKIM set up correctly.
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Sign up to get a report summary →Frequently asked questions
- Is comcast.net a valid email domain?
- Yes. comcast.net publishes 8 MX records and can receive email. Whether a particular mailbox exists is a separate question that only a mailbox check can answer.
- Is comcast.net a disposable email domain?
- No. comcast.net is not on our disposable list, but it is a free public provider. The list is updated regularly, and new throwaway domains appear all the time.
- What are the MX records for comcast.net?
- mx2.mxge.comcast.net (priority 5); mx1.mxge.comcast.net (priority 5); mx1a1.comcast.net (priority 50); mx2a1.comcast.net (priority 50); mx1c1.comcast.net (priority 50); mx2c1.comcast.net (priority 50); mx1h1.comcast.net (priority 50); mx2h1.comcast.net (priority 50).
- Does comcast.net have SPF and DMARC?
- SPF: yes, ending ~all. DMARC: yes, policy reject.