Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
firstco.com
Yes
✓ Yes
Barracuda
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-30 21:34:44 UTC · ↺ Refresh
MX Hostnames
- d258425a.ess.barracudanetworks.com
- d258425b.ess.barracudanetworks.com
MX Priorities
- d258425b.ess.barracudanetworks.com: 20
- d258425a.ess.barracudanetworks.com: 10
A / AAAA Records
- 141.193.213.20 (no PTR)
- 141.193.213.21 (no PTR)
Mail Server IPs
- 209.222.82.252 ↩ mail.ess.barracuda.com
- 209.222.82.253 ↩ mail.ess.barracuda.com
- 209.222.82.255 ↩ mail.ess.barracuda.com
SOA Record
Raw SOA
ns53.worldnic.com namehost.worldnic.com 126021615 10800 3600 604800 3600
Primary NS (mname)
ns53.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
126021615
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns53.worldnic.com
ns54.worldnic.com
SPF Record
✓ Soft Fail (~all)
v=spf1 a mx ip4:209.39.20.0/24 include:spf.mandrillapp.com ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate 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
mail._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: mail
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
8 records- 5pkmj8pvsva5thacbvabsvvlic
- brevo-code:7566ceb91341e4bc8867f56e0764e238
- 6341phnmk40n6dddamn16euiag
- MS=ms59163664
- SPFv=spf1 a mx ip4:209.39.20.0/24 include:spf.mandrillapp.com ~all
- 5pkmj8pva5thacbvabsvvlic
- anthropic-domain-verification-axtn5r=gq8ddZtAs09heccZZYDWUSSu7
- s75og02lhpm59tcc91p1gd0c08
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