Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
1stnb.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 02:58:54 UTC · ↺ Refresh
MX Hostnames
- smtp01.fcserv.com
- smtp02.fcserv.com
MX Priorities
- smtp02.fcserv.com: 10
- smtp01.fcserv.com: 10
A / AAAA Records
- 66.225.237.24 (no PTR)
Mail Server IPs
- 65.156.191.207 ↩ smtp02.fcserv.com
- 65.124.74.24 ↩ smtp01.fcserv.com
SOA Record
Raw SOA
edns1.ultradns.com premiumdns.support.neustar 2019071912 10800 3600 1209600 38400
Primary NS (mname)
edns1.ultradns.com
Admin Email (rname)
premiumdns@support.neustar
Serial
2019071912
Refresh
10800s
Retry
3600s
Expire
1209600s
Minimum TTL
38400s
Nameservers (NS)
edns1.ultradns.biz
edns1.ultradns.com
edns1.ultradns.net
edns1.ultradns.org
SPF Record
✓ Soft Fail (~all)
v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected],mailto:[email protected]!10m; ruf=mailto:[email protected],mailto:[email protected]!10m; rf=afrf; pct=100; ri=86400; fo=1;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]!10m
DKIM Selectors
✓ 2 found
selector1._domainkey
mail._domainkey
✓ Public key: 244 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- SPFv=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com ~all
- apple-domain-verification=EDxd1jZKMD68kOdQ
- Sendinblue-code:c6f5f8c3b2d068ffcb145502efdc03b7
Full email verification for 1stnb.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
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