signull.com

Valid Email Server
Domain Lookup › signull.com
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
signull.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-05-21 09:32:37 UTC · ↺ Refresh

MX Hostnames

  • dc.furnituresuperstore.biz
  • mail.furnituresuperstore.biz

MX Priorities

No priority data.

A / AAAA Records

  • 172.101.24.153

Mail Server IPs

No IPs resolved.

SOA Record

No SOA record found.

Nameservers (NS)

ns15.worldnic.com
ns16.worldnic.com

SPF Record

✓ Strict (-all)
v=spf1 mx a:dc.furnituresuperstore.biz include:charter.net include:mail.zendesk.com include:spf.smtp2go.com ip4:50.56.72.228 ip4:210.48.71.198/30 ip4:50.57.187.177 ip4:209.225.8.0/24 ip4:209.225.28.0/24 ip4:209.225.29.51/32 ip4:64.210.232.0/24 ip4:216.33.127.0/24 ip4:64.209.227.0/24 ip4:68.114.188.0/22 ip4:47.43.20.0/24 ip4:47.43.19.0/24 ip4:47.43.18.0/24 ip4:47.43.17.0/24 ip4:47.43.16.0/23 ip4:172.101.24.153 -all
📊 DNS lookups: 5/10
✓ 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

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

2 records
  • zhrZkdAHsmF8xu+TVIUvNwPAiOJBZOeiwZVGva46SveAfTbRENhdVEJTa4akuXg7JihGf6v+h0HSprj+1ciAMA==
  • SPFv=spf1 mx a:dc.furnituresuperstore.biz include:charter.net include:mail.zendesk.com include:spf.smtp2go.com ip4:50.56.72.228 ip4:210.48.71.198/30 ip4:50.57.187.177 ip4:209.225.8.0/24 ip4:209.225.28.0/24 ip4:209.225.29.51/32 ip4:64.210.232.0/24 ip4:216.33.127.0/24 ip4:64.209.227.0/24 ip4:68.114.188.0/22 ip4:47.43.20.0/24 ip4:47.43.19.0/24 ip4:47.43.18.0/24 ip4:47.43.17.0/24 ip4:47.43.16.0/23 ip4:172.101.24.153 -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 signull.com

SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.

No credit card required
Get 1,000 Free Credits