mattressfirm.com

Valid Email Server
Domain Lookup › mattressfirm.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
mattressfirm.com
Yes
✓ Yes
Proofpoint
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-30 02:29:13 UTC · ↺ Refresh

MX Hostnames

  • mxb-008fda01.gslb.pphosted.com
  • mxa-008fda01.gslb.pphosted.com

MX Priorities

  • mxa-008fda01.gslb.pphosted.com: 10
  • mxb-008fda01.gslb.pphosted.com: 10

A / AAAA Records

  • 104.18.0.220 (no PTR)
  • 104.18.1.220 (no PTR)
  • 2606:4700::6812:dc (no PTR)
  • 2606:4700::6812:1dc (no PTR)

Mail Server IPs

  • 205.220.161.132 ↩ mx0a-008fda01.pphosted.com
  • 205.220.173.132 ↩ mx0b-008fda01.pphosted.com

SOA Record

Raw SOA ns1.dnspark.net hostmaster.dnspark.net 2013102921 14400 7200 1209600 7200
Primary NS (mname)
ns1.dnspark.net
Admin Email (rname)
hostmaster@dnspark.net
Serial
2013102921
Refresh
14400s
Retry
7200s
Expire
1209600s
Minimum TTL
7200s

Nameservers (NS)

udns1.ultradns.net
udns2.ultradns.net

SPF Record

✓ Strict (-all)
v=spf1 ip4:104.193.84.0/24 ip4:128.121.15.128/25 ip4:198.107.199.0/25 include:us._netblocks.mimecast.com include:_spf.salesforce.com include:spf.mandrillapp.com ip4:205.220.161.132 ip4:205.220.173.132 -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected],mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected]; sp=reject; fo=1;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected],mailto:[email protected]
↳ Subdomain policy: reject

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

21 records
  • _vhfi22aof8dlfj2v49rlqvadkan0109
  • MS=ms91088721
  • NfnOOU0l3ihtdhMnaoal7LwBUhrhFbv8fZR2WpoGFZ3qSuGwQnWXwqRjAVs+g0aT4rc8fND9bafs2hL8ZNvapg==
  • _ae64ohntb9ju765qeqqzqeu0s7skpug
  • webexdomainverification.4C675B8B30FFB136E053AB06FC0A3F65=9c644c65-b840-4d6e-9648-850018408e44
  • VuVYzKf/hjc5uOMO7FAtIhvU5o9kereH21CzestHfFrO7hCPhCp7wZsaTkkuYf4fZFRsS9CqJdNBAij4hRJRrw==
  • crv6cpm5bhjdhd6c9qzzf0xbb8ssbd8s
  • SPFv=spf1 ip4:104.193.84.0/24 ip4:128.121.15.128/25 ip4:198.107.199.0/25 include:us._netblocks.mimecast.com include:_spf.salesforce.com include:spf.mandrillapp.com ip4:205.220.161.132 ip4:205.220.173.132 -all
  • _bl3e61spd21ch1pscipqhyorrglqchx
  • google-site-verification=zg5zLzzlA2ahTQEzyIY5JVVr3K_k4s-xwz7Lw39o3a4
  • google-site-verification=b2jdkxILx3JKfmz9OpfeRGtK5l0aQ8Jj96hSubMFnuk
  • google-site-verification=e01YL714O6WqrgH0v3vE8WRrEQi0GSGDQu_gmzGyw2s
  • 5xd220sq6nl1cvz0lpmzlklgjpxtgvr9
  • atlassian-domain-verification=+16tErbWXnbjWX2K6ji7bwArXGa8nAzb7kUmXSfxe1DrkmJhPPQJ45OAVTCf3kyL
  • 61f672acf08e4335a2a1f91279e39e65
  • docusign=a5f02361-2be6-4c56-8e88-73e721be50d0
  • MS=ms35092318
  • _yc4zwkgjt0okkj8qkvqkbm72bybj5py
  • google-site-verification=_TgHabbSEdfGEeZDR2aUI9oUOj9NHQqg1-Ux4gpMYG4
  • MS=ms23533152
  • atlassian-domain-verification=8A9yOqDsjRWTEwo7nzc7wkTUaOx+h9zDGlyC+USX0MnzR9m/CplPXsN7C4jzI7kE
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 mattressfirm.com

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

No credit card required
Get 1,000 Free Credits