Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
frontiertanklines.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-26 06:06:15 UTC · ↺ Refresh
MX Hostnames
- frontiertanklines-com.mx2.arsmtp.com
- frontiertanklines-com.mx1.arsmtp.com
MX Priorities
- frontiertanklines-com.mx2.arsmtp.com: 20
- frontiertanklines-com.mx1.arsmtp.com: 10
A / AAAA Records
- 74.208.236.201 ↩ 74-208-236-201.elastic-ssl.ui-r.com
- 2607:f1c0:100f:f000::2e0 ↩ 2607-f1c0-100f-f000-0000-0000-0000-02e0.elastic-ssl.ui-r.com
Mail Server IPs
- 8.19.118.200 ↩ server287.appriver.com
- 8.31.233.168 ↩ server286.appriver.com
SOA Record
Raw SOA
ns1068.ui-dns.biz hostmaster.1and1.com 2017080220 28800 7200 604800 300
Primary NS (mname)
ns1068.ui-dns.biz
Admin Email (rname)
hostmaster@1and1.com
Serial
2017080220
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
ns1068.ui-dns.biz
ns1068.ui-dns.com
ns1068.ui-dns.org
ns1068.ui-dns.de
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.messagelabs.com include:spf.protection.outlook.com ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; sp=quarantine; adkim=s; aspf=s; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1; ri=86400
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
↳ Subdomain policy: quarantine
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 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
2 records- FusionValidate
- SPFv=spf1 include:spf.messagelabs.com include:spf.protection.outlook.com ~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 frontiertanklines.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits