tno.nl

Valid Email Server
Domain Lookup › tno.nl

Domain Overview

DNS: ✓ 5d ago Checker: ✓ 5d ago
tno.nl
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-08-24 13:21:32 UTC · ↺ Refresh

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MX Hostnames

  • tno-nl.a-v1.mx.microsoft

MX Priorities

  • tno-nl.a-v1.mx.microsoft: 0

A / AAAA Records

  • 185.38.232.132 (no PTR)
  • 2a02:720:9:8::132 (no PTR)

Mail Server IPs

  • 52.101.68.36 ↩ mail-db5pr02cu00104.inbound.protection.outlook.com
  • 52.101.68.21 ↩ mail-db4pr02cu00205.inbound.protection.outlook.com
  • 52.101.68.5 ↩ mail-du2pr03cu00105.inbound.protection.outlook.com
  • 52.101.73.30 ↩ mail-am7pr05cu00306.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::5 ↩ mail-am1pr04cu00105.inbound.protection.outlook.com
  • 2a01:111:f403:ca04:: ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::e ↩ mail-am7pr05cu00206.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::a ↩ mail-du0pr03cu00102.inbound.protection.outlook.com

SOA Record

Raw SOA app-dns01.tno.nl beheer-tno-netwerk.tno.nl 2020033827 10800 1080 2419200 900
Primary NS (mname)
app-dns01.tno.nl
Admin Email (rname)
beheer-tno-netwerk@tno.nl
Serial
2020033827
Refresh
10800s
Retry
1080s
Expire
2419200s
Minimum TTL
900s

Nameservers (NS)

ns1.surfnet.nl
app-dns01.tno.nl
app-dns02.tno.nl

SPF Record

✓ Strict (-all)
v=spf1 ip4:134.221.1.0/24 ip4:46.31.48.0/21 ip4:84.241.159.211 ip6:2001:1690:23:332:10:77:32:16 include:spf.protection.outlook.com include:_spf.iprox.nl include:_spf-dc55.sapsf.eu include:_spf.emply.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

~ Quarantine
v=DMARC1;p=quarantine;sp=none;fo=1;rua=mailto:[email protected];ruf=mailto:[email protected];
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none

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

12 records
  • apple-domain-verification=v8VSiA3iMAB6KQn8
  • google-site-verification=hFByZyehxslzfa1Yupu_NxxzCgZgYOkPsU1hL0WGU9w
  • z2jvTv6Cy5+WSeZKyaObruGU1eXGdI/GpmyJyAv+S2voAHgo2+cv363rgaDoQNolJmZCK5FRRiBOC0sh78s9TA==
  • atlassian-domain-verification=UrlzMKwSK3LT205ZfQtOTggDQySX1vtD7sSaNShd9MzLpEjX/12tz/LaruchZc6o
  • mailerlite-domain-verification=d89ffcafc5215adf55d0348e0d2b0f665f67e011
  • successfactors-site-verification=Y2EzYmM4NGExMDVjYjNlZjI4OWU4ODk3ZjczODEwN2NhY2M3NGYxNmExNTZkNmZkZjhjODg2NWVlN2ViM2Y0Zg==
  • msfpkey=lrhg46wbj7sx27x8cxhzo6q
  • HARICA-pWkRIos9RdWyFzVpQdh
  • SPFv=spf1 ip4:134.221.1.0/24 ip4:46.31.48.0/21 ip4:84.241.159.211 ip6:2001:1690:23:332:10:77:32:16 include:spf.protection.outlook.com include:_spf.iprox.nl include:_spf-dc55.sapsf.eu include:_spf.emply.com -all
  • MS=ms21821455
  • MS=ms18810256
  • d9cd26988af347cb93c4d161db489f91
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