Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
gdcdesarrollos.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-31 06:35:38 UTC · ↺ Refresh
MX Hostnames
- gdcdesarrollos-com.mail.protection.outlook.com
MX Priorities
- gdcdesarrollos-com.mail.protection.outlook.com: 0
A / AAAA Records
- 20.230.167.148 (no PTR)
Mail Server IPs
- 52.101.194.13 ↩ mail-ch0pr04cu00605.inbound.protection.outlook.com
- 52.101.11.2 ↩ mail-sn1pr03cu00102.inbound.protection.outlook.com
- 52.101.41.183 ↩ mail-byapr04cu00307.inbound.protection.outlook.com
- 52.101.40.1 ↩ mail-cy4pr03cu00101.inbound.protection.outlook.com
- 2a01:111:f403:c946::2 ↩ mail-ch4pr04cu00102.inbound.protection.outlook.com
- 2a01:111:f403:c902::3 ↩ mail-sj0pr03cu01703.inbound.protection.outlook.com
- 2a01:111:f403:f90b:: ↩ mail-bn6pr04cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c903::3 ↩ mail-mw2pr02cu00503.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1-32.azure-dns.com azuredns-hostmaster.microsoft.com 1 3600 300 2419200 300
Primary NS (mname)
ns1-32.azure-dns.com
Admin Email (rname)
azuredns-hostmaster@microsoft.com
Serial
1
Refresh
3600s
Retry
300s
Expire
2419200s
Minimum TTL
300s
Nameservers (NS)
ns4-32.azure-dns.info
ns1-32.azure-dns.com
ns2-32.azure-dns.net
ns3-32.azure-dns.org
SPF Record
✓ Strict (-all)
v=spf1 a mx ip4:45.77.74.246/32 ip4:20.97.50.230/32 ip4:216.238.69.33/32 include:spf.protection.outlook.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 5 found
selector1._domainkey
selector2._domainkey
mail._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
4 records- google-site-verification=B7VW7HWoSeHUBiysjCagJJw0f1eFMCgugyYYqNnAqNY
- google-site-verification=UHk9K7uLkDr8EsrGsJqRAMJJ6iugomKpxkdwMlZ-43k
- google-site-verification=wh_5oapTCr7U3Ov3iVwWkbCwt8vgqTl7dO8weGVkAqc
- SPFv=spf1 a mx ip4:45.77.74.246/32 ip4:20.97.50.230/32 ip4:216.238.69.33/32 include:spf.protection.outlook.com -all
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for gdcdesarrollos.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits