guestresearch.com

Valid Email Server
Domain Lookup › guestresearch.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
guestresearch.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-19 04:19:21 UTC · ↺ Refresh

MX Hostnames

  • rainstorm.hannahnetworks.com
  • hailstorm.hannahnetworks.com

MX Priorities

  • rainstorm.hannahnetworks.com: 0
  • hailstorm.hannahnetworks.com: 50

A / AAAA Records

  • 205.209.58.75 (no PTR)

Mail Server IPs

  • 205.209.58.120 ↩ rainstorm.hannahnetworks.com
  • 205.209.58.122 ↩ hailstorm.hannahnetworks.com

SOA Record

Raw SOA ns1.guestresearch.net hostmaster.guestresearch.com 2022021175 3600 300 1814400 3600
Primary NS (mname)
ns1.guestresearch.net
Admin Email (rname)
hostmaster@guestresearch.com
Serial
2022021175
Refresh
3600s
Retry
300s
Expire
1814400s
Minimum TTL
3600s

Nameservers (NS)

ns1.guestresearch.net
ns2.guestresearch.net

SPF Record

✓ Strict (-all)
v=spf1 mx ip4:205.209.58.120 ip4:205.209.58.122 -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1;
✓ 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

3 records
  • yahoo-verification-key=PWauTqXHeD1Tt58cCn++dVifZCJc47wRr+wDcNKNq0M=
  • SPFv=spf1 mx ip4:205.209.58.120 ip4:205.209.58.122 -all
  • google-site-verification=eGT6OV1zuNU084C-hDAH_K6fwx0pUJG4nQyuIGT0-Rc
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 guestresearch.com

SMTP handshake, catch-all detection, SPF/DKIM/DMARC analysis, and Yahoo/Outlook verification.

Get 1,000 Free Credits