usam.ac.cr

Valid Email Server
Domain Lookup › usam.ac.cr
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
usam.ac.cr
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-07-01 14:56:50 UTC · ↺ Refresh

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MX Hostnames

  • usam-ac-cr.mail.protection.outlook.com

MX Priorities

  • usam-ac-cr.mail.protection.outlook.com: 10

A / AAAA Records

  • 104.26.8.14 (no PTR)
  • 104.26.9.14 (no PTR)
  • 172.67.73.231
  • 2606:4700:20::ac43:49e7
  • 2606:4700:20::681a:90e
  • 2606:4700:20::681a:80e

Mail Server IPs

  • 52.101.41.56 ↩ mail-sj0pr21cu00100.inbound.protection.outlook.com
  • 52.101.9.12 ↩ mail-bl0pr05cu00504.inbound.protection.outlook.com
  • 40.93.192.1 ↩ mail-dm5pr02cu00201.inbound.protection.outlook.com
  • 52.101.9.14 ↩ mail-bl0pr03cu00206.inbound.protection.outlook.com
  • 2a01:111:f403:c902::5 ↩ mail-sj2pr05cu00505.inbound.protection.outlook.com
  • 2a01:111:f403:f90f:: ↩ mail-sa9pr04cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:f90a::1 ↩ mail-bn8pr03cu00201.inbound.protection.outlook.com
  • 2a01:111:f403:f802::3 ↩ mail-sj0pr03cu01403.inbound.protection.outlook.com

SOA Record

Raw SOA giancarlo.ns.cloudflare.com dns.cloudflare.com 2408294635 10000 2400 604800 1800
Primary NS (mname)
giancarlo.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2408294635
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

giancarlo.ns.cloudflare.com
mina.ns.cloudflare.com

SPF Record

✓ Soft Fail (~all)
v=spf1 ip4:52.1.255.42 ip4:201.195.253.82 ip4:201.193.183.162 ip4:23.143.96.90 ip4:23.143.96.1 include:spf.protection.outlook.com include:mktomail.com include:mail.zohoanalytics.com ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)

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

9 records
  • ciscocidomainverification=4109fbae2851c328c3afab002d41eaf09847d3c5b139ed1c75c1c16ec5698692
  • cubk2v66q1h70fr19bhlrbnj2d
  • facebook-domain-verification=x7j2tr2yrghu8aqc34lbnj5c8ia9qq
  • rhs1otjlbujtkot6r80hcb17ib
  • v=msv1 t=ea1eccc190e4ba9df9ab163dfdda36
  • SPFv=spf1 ip4:52.1.255.42 ip4:201.195.253.82 ip4:201.193.183.162 ip4:23.143.96.90 ip4:23.143.96.1 include:spf.protection.outlook.com include:mktomail.com include:mail.zohoanalytics.com ~all
  • zoho-verification=zb11201234.zmverify.zoho.com
  • _7i71xrnn0mbd16eo4vxnbc6f7jcgy3c
  • _wnj5r05p1t6ta6yoil4mzxp6mjwuncv
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