armstrongdev.com

Valid Email Server
Domain Lookup › armstrongdev.com

Domain Overview

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

Checked via [email protected] · 2026-03-18 13:11:31 UTC · ↺ Refresh

MX Hostnames

  • armstrongdev-com.mail.protection.outlook.com

MX Priorities

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

A / AAAA Records

  • 24.154.5.61 ↩ static-acs-24-154-5-61.zoominternet.net

Mail Server IPs

  • 52.101.10.18 ↩ mail-bn8pr05cu00302.inbound.protection.outlook.com
  • 52.101.41.54 ↩ mail-sj2pr05cu00506.inbound.protection.outlook.com
  • 52.101.41.56 ↩ mail-sj0pr21cu00100.inbound.protection.outlook.com
  • 52.101.9.12 ↩ mail-bl0pr05cu00504.inbound.protection.outlook.com
  • 2a01:111:f403:f804::2 ↩ mail-co1pr05cu00402.inbound.protection.outlook.com
  • 2a01:111:f403:f802:: ↩ mail-byapr05cu00400.inbound.protection.outlook.com
  • 2a01:111:f403:c946::4 ↩ mail-ch0pr04cu00504.inbound.protection.outlook.com
  • 2a01:111:f403:f90d::1 ↩ mail-sn1pr0501cu00301.inbound.protection.outlook.com

SOA Record

Raw SOA ns1.agoc.com dnsadmin.agoc.com 2016050236 3600 1800 1814400 900
Primary NS (mname)
ns1.agoc.com
Admin Email (rname)
dnsadmin@agoc.com
Serial
2016050236
Refresh
3600s
Retry
1800s
Expire
1814400s
Minimum TTL
900s

Nameservers (NS)

ns6.dnsmadeeasy.com
ns5.dnsmadeeasy.com
ns1.agoc.com
ns7.dnsmadeeasy.com

SPF Record

✓ Strict (-all)
v=spf1 ip4:24.154.0.21 ip4:72.23.146.21 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

4 records
  • _un8vtjrtco1wqbxrfzl0ie5jd188v75
  • 1crf/g6i76q7296cqrS8fhOBRkf3RcHWKtjY2iSZwHCfelTu4BQGGJd5rQpDdwUJLzQy8JivIDySGFkKkvo9bw==
  • SPFv=spf1 ip4:24.154.0.21 ip4:72.23.146.21 include:spf.protection.outlook.com -all
  • ms=ms53653702
Full email verification for armstrongdev.com

Run SMTP check, SPF/DKIM/DMARC and catch-all detection.

SPF / DKIM / DMARC Get 1,000 Free Credits