usco.edu.co

Valid Email Server
Domain Lookup › usco.edu.co

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
usco.edu.co
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-04-04 13:51:42 UTC · ↺ Refresh

MX Hostnames

  • ALT2.ASPMX.L.GOOGLE.COM
  • ASPMX2.GOOGLEMAIL.COM
  • ASPMX4.GOOGLEMAIL.COM
  • ASPMX3.GOOGLEMAIL.COM
  • ALT1.ASPMX.L.GOOGLE.COM
  • 4338DDF8C1ABD91BBC9AA35B22D143F988A74FF9.msv1.invalid.usco.edu.co
  • ASPMX5.GOOGLEMAIL.COM
  • ASPMX.L.GOOGLE.COM

MX Priorities

  • alt2.aspmx.l.google.com: 20
  • aspmx2.googlemail.com: 30
  • aspmx3.googlemail.com: 40
  • aspmx4.googlemail.com: 50
  • aspmx5.googlemail.com: 60
  • 4338ddf8c1abd91bbc9aa35b22d143f988a74ff9.msv1.invalid.usco.edu.co: 32767
  • aspmx.l.google.com: 10
  • alt1.aspmx.l.google.com: 20

A / AAAA Records

  • 185.229.216.198 (no PTR)
  • 2801:159::1000:0:0:0:70

Mail Server IPs

  • 172.253.116.27 ↩ dj-in-f27.1e100.net
  • 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
  • 108.177.123.27 ↩ lcscld-in-f27.1e100.net
  • 2800:3f0:4003:c0f::1a (no PTR)
  • 2a00:1450:400b:c02::1b ↩ dj-in-f27.1e100.net
  • 192.178.223.26 ↩ yulhrs-in-f26.1e100.net
  • 2a00:1450:4009:c0f::1a ↩ yulhrs-in-f26.1e100.net
  • 173.194.76.26 ↩ ws-in-f26.1e100.net
  • 2a00:1450:400c:c00::1a ↩ ws-in-f26.1e100.net

SOA Record

Raw SOA opitaprueba.usco.edu.co admin.usco.edu.co 98998930 3600 7200 2419200 86400
Primary NS (mname)
opitaprueba.usco.edu.co
Admin Email (rname)
admin@usco.edu.co
Serial
98998930
Refresh
3600s
Retry
7200s
Expire
2419200s
Minimum TTL
86400s

Nameservers (NS)

opitaprueba.usco.edu.co

SPF Record

✓ Soft Fail (~all)
v=spf1 include:_spf.google.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✓ 1 found
google._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: google

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

2 records
  • SPFv=spf1 include:_spf.google.com ~all
  • globalsign-domain-verification=khgei7y1WVV9abkZNHm7VnyQ8BzQuLUJ1aZ2Ly_jOn
Full email verification for usco.edu.co

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

SPF / DKIM / DMARC Get 1,000 Free Credits