persq.org

Valid Email Server
Domain Lookup › persq.org

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
persq.org
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-18 17:23:51 UTC · ↺ Refresh

MX Hostnames

  • us-smtp-inbound-1.mimecast.com
  • us-smtp-inbound-2.mimecast.com

MX Priorities

  • us-smtp-inbound-1.mimecast.com: 10
  • us-smtp-inbound-2.mimecast.com: 10

A / AAAA Records

  • 23.185.0.4 (no PTR)

Mail Server IPs

  • 170.10.128.242 ↩ us-smtp-inbound-2.mimecast.com
  • 170.10.128.221 ↩ us-smtp-inbound-2.mimecast.com
  • 170.10.132.221 ↩ us-smtp-inbound-1.mimecast.com
  • 170.10.128.141 ↩ us-smtp-inbound-1.mimecast.com
  • 170.10.132.242 ↩ us-smtp-inbound-2.mimecast.com
  • 170.10.132.141 ↩ us-smtp-inbound-1.mimecast.com

SOA Record

Raw SOA dns1.cscdns.net hostmaster.cscdns.net 2011072931 28800 7200 604800 600
Primary NS (mname)
dns1.cscdns.net
Admin Email (rname)
hostmaster@cscdns.net
Serial
2011072931
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s

Nameservers (NS)

dns2.cscdns.net
dns1.cscdns.net

SPF Record

✓ Soft Fail (~all)
v=spf1 ip4:66.151.197.0/24 include:spf.protection.outlook.com include:_netblocks.mimecast.com ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

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

7 records
  • cisco-ci-domain-verification=37729d0530e52b34098597556ef9bed61e3ba78a595c0a8e106dfe7380956322
  • SPFv=spf1 ip4:66.151.197.0/24 include:spf.protection.outlook.com include:_netblocks.mimecast.com ~all
  • MS=ms67987373
  • 0ed1fe018aa9b8d72a9e6845c2811ef5178e6af522
  • openai-domain-verification=dv-aTIsI3DBLlkqPDjfCaPMu3b5
  • knowbe4-site-verification=de0f5e3bcb0aaab28f03ed5c4a62cdf9
  • anthropic-domain-verification-h65s1r=K6dm0lsfakTSfxprZbjd08p1P
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 persq.org

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

No credit card required
Get 1,000 Free Credits