Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
aceroyconcreto.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-27 04:16:18 UTC · ↺ Refresh
MX Hostnames
- mail.aceroyconcreto.com
MX Priorities
- mail.aceroyconcreto.com: 0
A / AAAA Records
- 143.255.28.56 ↩ www.aceroyconcreto.com
Mail Server IPs
- 143.255.28.56 ↩ www.aceroyconcreto.com
SOA Record
Raw SOA
ns1.itocr.com hostmaster 2026032301 7200 3600 1209600 86400
Primary NS (mname)
ns1.itocr.com
Admin Email (rname)
hostmaster
Serial
2026032301
Refresh
7200s
Retry
3600s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns2.itocr.com
ns1.itocr.com
SPF Record
✓ Strict (-all)
v=spf1 mx a ip4:143.255.28.56 -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- SPFv=spf1 mx a ip4:143.255.28.56 -all
- MS=ms86050839
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 aceroyconcreto.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits