Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
undostres.com.mx
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-04 16:21:45 UTC · ↺ Refresh
MX Hostnames
- alt1.aspmx.l.google.com
- aspmx.l.google.com
- alt4.aspmx.l.google.com
- alt3.aspmx.l.google.com
- alt2.aspmx.l.google.com
MX Priorities
- alt4.aspmx.l.google.com: 10
- aspmx.l.google.com: 2
- alt1.aspmx.l.google.com: 5
- alt2.aspmx.l.google.com: 5
- alt3.aspmx.l.google.com: 10
A / AAAA Records
- 172.66.144.118
- 104.20.16.164
Mail Server IPs
- 173.194.76.27 ↩ ws-in-f27.1e100.net
- 2a00:1450:400c:c00::1a ↩ ws-in-x1a.1e100.net
- 142.251.16.27 ↩ bl-in-f27.1e100.net
- 2607:f8b0:4004:c21::1b ↩ pe-in-f27.1e100.net
- 108.177.123.27 ↩ lcscld-in-f27.1e100.net
- 2800:3f0:4003:c0f::1a (no PTR)
- 172.253.116.26 ↩ dj-in-f26.1e100.net
- 2a00:1450:400b:c02::1b ↩ dj-in-f27.1e100.net
- 192.178.223.27 ↩ yulhrs-in-f27.1e100.net
- 2a00:1450:4009:c0f::1a ↩ yulhrs-in-f26.1e100.net
SOA Record
Raw SOA
adelaide.ns.cloudflare.com dns.cloudflare.com 2400512544 10000 2400 604800 1800
Primary NS (mname)
adelaide.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2400512544
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
adelaide.ns.cloudflare.com
alfred.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 mx a ip4:13.52.11.183 include:_spf.google.com ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: s1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
7 records- google-site-verification=X_85BHHv-p4ZNG-ZaVwjRKlwTkNIA3r7eDUFiLTo9Ww
- google-site-verification=YiBCCCsHtWhZinhD9-08V7sYkJrCyA7B7ZJL1w-dc7o
- google-site-verification=h2FrW4LM-1aKvUz7TUjS_MTqJKscFZiIpHB63uH5lmM
- SPFv=spf1 mx a ip4:13.52.11.183 include:_spf.google.com ~all
- $MISCKEY
- google-site-verification=C2T1FwqjxPKC0ycZD3GqUTdZnmRfyJ03j9Qdkc8JrzY
- google-site-verification=R-Rc2wMcrnBbFxvQhmpRO75XpB8nkognfVsOdMBaReE
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for undostres.com.mx
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits