Is duolingo.com a valid email domain?
duolingo.com can receive email. It publishes 7 mail servers, run by Google (Gmail or Google Workspace), and the first choice is aspmx.l.google.com.
It is not a free provider and is not on our disposable list, so addresses here usually belong to a company, school or other organisation.
SPF is published and ends with ~all. DMARC is set to reject.
Check an email address at duolingo.com
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MX records (Google (Gmail or Google Workspace))
| Priority | Mail server | Resolves to |
|---|---|---|
| 10 | aspmx.l.google.com | 142.251.127.26, 2a00:1450:4001:c21::1a |
| 20 | alt1.aspmx.l.google.com | 142.250.147.26, 2a00:1450:4025:c01::1b |
| 20 | alt2.aspmx.l.google.com | 172.253.152.27, 2a00:1450:4010:c22::1b |
| 30 | aspmx2.googlemail.com | 142.250.147.27, 2a00:1450:4025:c01::1b |
| 30 | aspmx3.googlemail.com | 172.253.152.27, 2a00:1450:4010:c22::1a |
| 30 | aspmx4.googlemail.com | 192.179.20.27, 2404:6800:4000:1027::1a |
| 30 | aspmx5.googlemail.com | 192.178.158.27, 2404:6800:4013:813::1b |
SPF
Record published
v=spf1 ip4:100.25.59.11 ip4:205.201.128.0/20 ip4:198.2.128.0/18 ip4:148.105.8.0/21 ip4:52.73.203.75 ip4:52.70.130.33 include:amazonses.com include:_spf.google.com include:_spf.salesforce.com include:mail.zendesk.com include:aspmx.pardot.com ~all
DMARC
Policy: reject
v=DMARC1; p=reject; sp=reject; fo=1; rua=mailto:re+lhqmqj57zra@DMARC.postmarkapp.com,mailto:re+xu5r3a1wrlo@inbound.dmarcdigests.com,mailto:dmarcreports@duolingo.com; ruf=mailto:dmarcreports@duolingo.com; adkim=r; aspf=r
Disposable?
No, not on our disposable list.
Free provider?
No, not a known free provider.
What this means for your email list
What this means for addresses at this domain
The domain accepts mail, but whether a given person's mailbox exists depends on that organisation. Company domains often have staff who left, role mailboxes like info@ and sales@, and sometimes catch-all rules that accept everything. Verify the individual address before you send.
Sender authentication
duolingo.com has a strict DMARC policy (reject): mail that fails authentication is refused, which protects its brand from spoofing and means anyone sending as duolingo.com must have SPF and DKIM set up correctly.
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Sign up to get a report summary →Frequently asked questions
- Is duolingo.com a valid email domain?
- Yes. duolingo.com publishes 7 MX records and can receive email. Whether a particular mailbox exists is a separate question that only a mailbox check can answer.
- Is duolingo.com a disposable email domain?
- No. duolingo.com is not on our disposable list. The list is updated regularly, and new throwaway domains appear all the time.
- What are the MX records for duolingo.com?
- aspmx.l.google.com (priority 10); alt1.aspmx.l.google.com (priority 20); alt2.aspmx.l.google.com (priority 20); aspmx2.googlemail.com (priority 30); aspmx3.googlemail.com (priority 30); aspmx4.googlemail.com (priority 30); aspmx5.googlemail.com (priority 30).
- Does duolingo.com have SPF and DMARC?
- SPF: yes, ending ~all. DMARC: yes, policy reject.