sirenstrategy.co

Valid Email Server
Domain Lookup › sirenstrategy.co

Domain Overview

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

Checked via [email protected] · 2026-03-19 02:55:08 UTC · ↺ Refresh

MX Hostnames

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

MX Priorities

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

A / AAAA Records

  • 3.137.76.75 ↩ ec2-3-137-76-75.us-east-2.compute.amazonaws.com

Mail Server IPs

  • 52.101.41.3 ↩ mail-sj2pr05cu00103.inbound.protection.outlook.com
  • 52.101.9.20 ↩ mail-bl0pr02cu00604.inbound.protection.outlook.com
  • 52.101.41.54 ↩ mail-sj2pr05cu00506.inbound.protection.outlook.com
  • 52.101.42.16 ↩ mail-co1pr05cu00300.inbound.protection.outlook.com
  • 2a01:111:f403:c802:: ↩ mail-cy4pr03cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:f802::3 ↩ mail-sj0pr03cu01403.inbound.protection.outlook.com
  • 2a01:111:f403:c801:: ↩ mail-sa9pr02cu00200.inbound.protection.outlook.com
  • 2a01:111:f403:f804::3 ↩ mail-co1pr03cu00403.inbound.protection.outlook.com

SOA Record

Raw SOA ns57.domaincontrol.com dns.jomax.net 2024080701 28800 7200 604800 600
Primary NS (mname)
ns57.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2024080701
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s

Nameservers (NS)

ns58.domaincontrol.com
ns57.domaincontrol.com

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:email.prnewswire.com include:relay.mailchannels.net ip4:3.137.76.75 -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict 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

3 records
  • _acme-challenge.www.sirenstrategy.co
  • SPFv=spf1 include:spf.protection.outlook.com include:email.prnewswire.com include:relay.mailchannels.net ip4:3.137.76.75 -all
  • google-site-verification=6UvFVlGdqTwS7LyCjgu5ENi9_757nf4Vgj-84AC-auY
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