grandclass.es

Valid Email Server
Domain Lookup › grandclass.es

Domain Overview

DNS: ✓ just now Checker: ✓ just now
grandclass.es
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-09-23 02:27:18 UTC · ↺ Refresh

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MX Hostnames

  • grandclass-es.mail.protection.outlook.com

MX Priorities

  • grandclass-es.mail.protection.outlook.com: 1

A / AAAA Records

  • 176.28.120.64 (no PTR)

Mail Server IPs

  • 52.101.91.159 ↩ mail-matpr04cu00207.inbound.protection.outlook.com
  • 52.101.185.21 ↩ mail-zrxpr05cu00105.inbound.protection.outlook.com
  • 52.101.103.143 ↩ mail-miypr03cu00107.inbound.protection.outlook.com
  • 52.101.73.145 ↩ mail-am6pr02cu00301.inbound.protection.outlook.com
  • 2a01:111:f403:ca21::a ↩ mail-maspr04cu00102.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::b ↩ mail-dbbpr03cu00103.inbound.protection.outlook.com
  • 2a01:111:f403:ca3c::8 ↩ mail-zrxpr05cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:ca48::a ↩ mail-miypr02cu00202.inbound.protection.outlook.com

SOA Record

Raw SOA ns1.dominioabsoluto.com hostmaster.ns1.dominioabsoluto.com 1790130438 14400 3600 604800 86400
Primary NS (mname)
ns1.dominioabsoluto.com
Admin Email (rname)
hostmaster@ns1.dominioabsoluto.com
Serial
1790130438
Refresh
14400s
Retry
3600s
Expire
604800s
Minimum TTL
86400s

Nameservers (NS)

ns2.dominioabsoluto.com
ns1.dominioabsoluto.com

SPF Record

✓ Strict (-all)
v=spf1 +a +mx ip4:217.116.2.40/29 include:spf.protection.outlook.com -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

8 records
  • SPFv=spf1 +a +mx ip4:217.116.2.40/29 include:spf.protection.outlook.com -all
  • _e50z0s9du55dzthmqommjis5hcfyl0h
  • MS=ms51572717
  • _65go0ifcvhpqo8vc74fbj1gr6h95nsd
  • _o1myfifraa30rvnvij3uny2o7y7hqb3
  • s94pk7kl2qpzrc6t2frkyjl527vwdnvq
  • g32995cl484vr690sygdvw7ds7fpdh13
  • _gubwkuekakimem12kliwsuudo0gkmow
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