constructor.dk

Valid Email Server
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
constructor.dk
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-09-04 14:35:55 UTC · ↺ Refresh

Add email validation to your forms — free

Add our free script to block 10,000+ disposable domains + perform other checks. No signup, unlimited checks.

MX validation Disposable detection Role accounts
Add to your signup form
<script src="https://check.verifyswift.com/"></script>
One line · No registration · See full docs & demo → · Customize →

MX Hostnames

  • constructor-dk.mail.protection.outlook.com

MX Priorities

  • constructor-dk.mail.protection.outlook.com: 10

A / AAAA Records

  • 158.174.42.88 ↩ h-158-174-42-88.NA.cust.bahnhof.se

Mail Server IPs

  • 52.101.73.6 ↩ mail-am6pr04cu00306.inbound.protection.outlook.com
  • 52.101.73.11 ↩ mail-am1pr04cu00103.inbound.protection.outlook.com
  • 52.101.185.21 ↩ mail-zrxpr05cu00105.inbound.protection.outlook.com
  • 52.101.68.0 ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::c ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
  • 2a01:111:f403:ca09:: ↩ mail-am3pr04cu00500.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::20 ↩ mail-as8pr05cu00400.inbound.protection.outlook.com
  • 2a01:111:f403:ca3c::a ↩ mail-zrxpr07cu00102.inbound.protection.outlook.com

SOA Record

Raw SOA ns1.gonvarri.com hostmaster.gonvarri.com 216 900 600 604800 3600
Primary NS (mname)
ns1.gonvarri.com
Admin Email (rname)
hostmaster@gonvarri.com
Serial
216
Refresh
900s
Retry
600s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

ns1.gonvarri.com
ns2.evolutio.es
ns1.evolutio.es

SPF Record

✓ Strict (-all)
v=spf1 include:spf01.gonvarri.com include:spf.eu.signature365.net -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; sp=reject; fo=1;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject

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

6 records
  • SPFv=spf1 include:spf01.gonvarri.com include:spf.eu.signature365.net -all
  • MS=ms83215107
  • m1yywQZm19/FgSXDdDcsy5A+m3r8Y7t6UfTG06jtm8QaKmHKdUfVY6XOuykVVoSTgwQF3wTSpJ4/UPwk80RwGg==
  • facebook-domain-verification=vaczyqtap5g7e0n998915ery1iwv58
  • d365mktkey=BLgQV6NuvyofJgAxY5uAwOI8haVN9NmHbequD4CYnIEx
  • v=spf2.0/pra,mfrom include:spf01.gonvarri.com include:spf.eu.signature365.net -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 · Customize →
See demo & docs
Deep verification
Full email verification for constructor.dk

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

No credit card required
Get 1,000 Free Credits