tecsup.edu.pe

Valid Email Server
Domain Lookup › tecsup.edu.pe

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
tecsup.edu.pe
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-24 00:27:14 UTC · ↺ Refresh

MX Hostnames

  • ventas
  • alt1.aspmx.l.google.com
  • aspmx.l.google.com
  • alt2.aspmx.l.google.com
  • alt4.aspmx.l.google.com
  • alt3.aspmx.l.google.com

MX Priorities

  • alt4.aspmx.l.google.com: 10
  • ventas: 20
  • aspmx.l.google.com: 1
  • alt1.aspmx.l.google.com: 5
  • alt2.aspmx.l.google.com: 5
  • alt3.aspmx.l.google.com: 10

A / AAAA Records

  • 45.236.45.189 ↩ tecsup.edu.pe

Mail Server IPs

  • 173.194.76.27 ↩ ws-in-f27.1e100.net
  • 2a00:1450:400c:c00::1b ↩ ws-in-f27.1e100.net
  • 172.253.122.26 ↩ bh-in-f26.1e100.net
  • 2607:f8b0:4004:c1b::1b ↩ wv-in-f27.1e100.net
  • 108.177.123.27 ↩ lcscld-in-f27.1e100.net
  • 2800:3f0:4003:c0f::1a (no PTR)
  • 172.253.116.27 ↩ dj-in-f27.1e100.net
  • 2a00:1450:400b:c02::1b ↩ dj-in-f27.1e100.net

SOA Record

Raw SOA ns1.opticalip.com.pe hostmaster.opticalip.com.pe 2026031600 43200 3600 604800 3600
Primary NS (mname)
ns1.opticalip.com.pe
Admin Email (rname)
hostmaster@opticalip.com.pe
Serial
2026031600
Refresh
43200s
Retry
3600s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

ns1.opticalip.com.pe
ns2.opticalip.com.pe

SPF Record

✓ Soft Fail (~all)
v=spf1 include:_spf.google.com include:sendgrid.net include:one.zoho.com ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ Missing

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

DKIM Selectors

✓ 3 found
google._domainkey
s1._domainkey
s2._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

8 records
  • facebook-domain-verification=4mf94ovh9zsfouoyplw606a9hku7xg
  • twilio-domain-verification=10b69b90521238ecb9759ebe385044e4
  • pardot_337821_*=b33d983a475a1bb54876845ab1440760b026bef44a41e6278b62f50511a30def
  • SPFv=spf1 include:_spf.google.com include:sendgrid.net include:one.zoho.com ~all
  • google-site-verification=kp-wOrDQou3QU3vvpO_42YTeuqWOOy5WZ3iv57VlBHI
  • MS=ms38339598
  • cisco-ci-domain-verification=313ba01e2ac5c5e8e98ee3d47a41d3fc78df6f53dae9778f451bc220f24e2993
  • google-site-verification=RLE7CiRMq_8j7LSy7jWse5-mHrIRM4kfvAhSEDsyXx4
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 tecsup.edu.pe

SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.

No credit card required
Get 1,000 Free Credits