Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
compucalcalibrations.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-20 23:02:49 UTC · ↺ Refresh
MX Hostnames
- mx0101.titan.email
- mx0102.titan.email
MX Priorities
- mx0101.titan.email: 10
- mx0102.titan.email: 20
A / AAAA Records
- 185.2.67.30 ↩ 67-30.colo.sta.blacknight.ie
Mail Server IPs
- 52.59.38.182 ↩ ec2-52-59-38-182.eu-central-1.compute.amazonaws.com
- 18.159.184.97 ↩ ec2-18-159-184-97.eu-central-1.compute.amazonaws.com
SOA Record
Raw SOA
ns1.blacknight.com hostmaster.blacknight.com 1276097858 14400 7200 2419200 3600
Primary NS (mname)
ns1.blacknight.com
Admin Email (rname)
hostmaster@blacknight.com
Serial
1276097858
Refresh
14400s
Retry
7200s
Expire
2419200s
Minimum TTL
3600s
Nameservers (NS)
ns2.blacknight.com
ns1.blacknight.com
SPF Record
✓ Soft Fail (~all)
v=spf1 a ip4:46.22.135.24 include:spf.blacknight.ie ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
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- google-site-verification=6sBfv3XyldGdA26CXbh2kTTb2m6-UdzHaquPDVj76qs
- SPFv=spf1 a ip4:46.22.135.24 include:spf.blacknight.ie ~all
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 compucalcalibrations.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits