geostone.com

Valid Email Server
Domain Lookup › geostone.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
geostone.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-26 07:43:54 UTC · ↺ Refresh

MX Hostnames

  • geostone-com.mail.protection.outlook.com

MX Priorities

  • geostone-com.mail.protection.outlook.com: 0

A / AAAA Records

  • 198.49.23.145 (no PTR)
  • 198.185.159.144 (no PTR)
  • 198.185.159.145
  • 198.49.23.144

Mail Server IPs

  • 52.101.9.2 ↩ mail-mn2pr02cu00202.inbound.protection.outlook.com
  • 52.101.41.183 ↩ mail-byapr04cu00307.inbound.protection.outlook.com
  • 52.101.8.46 ↩ mail-dm6pr05cu00406.inbound.protection.outlook.com
  • 52.101.11.17 ↩ mail-sn1pr0501cu00301.inbound.protection.outlook.com
  • 2a01:111:f403:c946::4 ↩ mail-ch0pr04cu00504.inbound.protection.outlook.com
  • 2a01:111:f403:c922:: ↩ mail-bl0pr03cu00200.inbound.protection.outlook.com
  • 2a01:111:f403:c801::1 ↩ mail-sn1pr0501cu00101.inbound.protection.outlook.com
  • 2a01:111:f403:c901::1 ↩ mail-bl2pr04cu00201.inbound.protection.outlook.com

SOA Record

Raw SOA dns1.p01.nsone.net hostmaster.nsone.net 1753206186 43200 7200 1209600 3600
Primary NS (mname)
dns1.p01.nsone.net
Admin Email (rname)
hostmaster@nsone.net
Serial
1753206186
Refresh
43200s
Retry
7200s
Expire
1209600s
Minimum TTL
3600s

Nameservers (NS)

dns4.p09.nsone.net
dns1.p09.nsone.net
dns2.p09.nsone.net
dns3.p09.nsone.net

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ 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
  • 6789969
  • SPFv=spf1 include:spf.protection.outlook.com -all
  • nktuo6fuqmnc0a35grja3v0ia1
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