optimizeit.co

Valid Email Server
Domain Lookup › optimizeit.co

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
optimizeit.co
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-04-04 17:46:20 UTC · ↺ Refresh

MX Hostnames

  • optimizeit-co.mail.protection.outlook.com

MX Priorities

  • optimizeit-co.mail.protection.outlook.com: 0

A / AAAA Records

  • 172.67.162.80 (no PTR)
  • 104.21.58.173 (no PTR)
  • 2606:4700:3034::ac43:a250
  • 2606:4700:3035::6815:3aad

Mail Server IPs

  • 52.101.10.6 ↩ mail-bn1pr21cu00106.inbound.protection.outlook.com
  • 40.93.192.4 ↩ mail-dm2pr04cu00404.inbound.protection.outlook.com
  • 52.101.9.21 ↩ mail-bl2pr04cu00205.inbound.protection.outlook.com
  • 52.101.11.3 ↩ mail-sn1pr0501cu00103.inbound.protection.outlook.com
  • 2a01:111:f403:c922:: ↩ mail-bl0pr03cu00200.inbound.protection.outlook.com
  • 2a01:111:f403:f905::4 ↩ mail-dm2pr04cu00404.inbound.protection.outlook.com
  • 2a01:111:f403:f802::1 ↩ mail-sj2pr05cu00101.inbound.protection.outlook.com
  • 2a01:111:f403:f912:: ↩ mail-cy5pr03cu00200.inbound.protection.outlook.com

SOA Record

Raw SOA lamar.ns.cloudflare.com dns.cloudflare.com 2399871308 10000 2400 604800 1800
Primary NS (mname)
lamar.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399871308
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

luciana.ns.cloudflare.com
lamar.ns.cloudflare.com

SPF Record

✓ Strict (-all)
v=spf1 ip4:5.9.79.107 include:relay.mailchannels.net include:spf.protection.outlook.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

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

DKIM Selectors

✓ 1 found
default._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: default

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

All TXT Records

4 records
  • google-site-verification=Fequcevu5BDUWmwc1W3E9D7bL4bqL-uMW7TMN_GuwuU
  • SPFv=spf1 ip4:5.9.79.107 include:relay.mailchannels.net include:spf.protection.outlook.com -all
  • MS=AC5369A4135006E74AEFFDAF387C5F525197223A
  • apple-domain-verification=CPSkKKU8UswIhGxJ
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 optimizeit.co

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

No credit card required
Get 1,000 Free Credits