Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
dtn.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-18 05:15:48 UTC · ↺ Refresh
MX Hostnames
- dtn-com.mail.protection.outlook.com
MX Priorities
- dtn-com.mail.protection.outlook.com: 0
A / AAAA Records
- 141.193.213.20 (no PTR)
- 141.193.213.21 (no PTR)
Mail Server IPs
- 52.101.9.20 ↩ mail-bl0pr02cu00604.inbound.protection.outlook.com
- 52.101.9.21 ↩ mail-bl2pr04cu00205.inbound.protection.outlook.com
- 52.101.11.2 ↩ mail-sn1pr03cu00102.inbound.protection.outlook.com
- 52.101.9.0 ↩ mail-bl2pr02cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
oma-ns.dtn.com dns.dtn.com 2026031103 3600 1800 1209600 300
Primary NS (mname)
oma-ns.dtn.com
Admin Email (rname)
dns@dtn.com
Serial
2026031103
Refresh
3600s
Retry
1800s
Expire
1209600s
Minimum TTL
300s
Nameservers (NS)
des-ns.dtn.com
oma-ns.dtn.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:spfb.dtn.com include:spfc.dtn.com include:spfd.dtn.com include:spfe.dtn.com include:spff.dtn.com include:spfg.dtn.com ip4:69.41.208.0/20 ip4:67.97.112.0/24 ip4:208.3.212.0/24 ip4:5.135.241.83 ip4:194.53.0.136/31 ip4:83.98.0.240 ip4:83.98.64.200 ip4:83.98.11.47 ip4:83.98.11.48 ip4:66.112.144.10 ip4:66.112.144.11 -all
📊 DNS lookups: 7/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; ruf=mailto:[email protected];
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 3 found
k1._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: k1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
20 records- docusign=52a448ef-6573-42de-9f42-141f330163fd
- status-page-domain-verification=mr2tj4jpj5vk
- atlassian-domain-verification=DPVpKkFOBsRMylzKiwmfgQ8KlUCQ221K061JnJDGWu9iH8hSUAmd7E/rbzRcVMVh
- pendo-domain-verification=dxAGBDtF16yRyqgeBoDbRF2FJgY
- segment-site-verification=irKY3qOaBsqMMdwnEULxesgJMvjFyQzr
- tWyUwZF+gAOtLG3qWvu0cpNO2SbYhjstntWayyy/rT+PFmLJQGWEY/qs5DLyxJgZH7VSlXh4sky9jaM9p+D+kA==
- miro-verification=eda00dcc7a98f0b1dbb62f42413ef0fe6a321497
- contractworksverify=mfNx1VvFYP3Xy
- google-site-verification=tQZ-dYS0V8mEAgpmSmLSILHGfZfAqW0UNNXMRrJMpn8
- atlassian-domain-verification=VgV88LIqh/mpykqM6JKGhfWlnf5We0JNrPTA6j39aXI7orQ7ExdocHQlZNJxJnSy
- amazonses:IYiAn6rnvlLE2ebW7kZ6oripRc91W161HLwLpobL8P4=
- amazonses:H8lQM1O+SHSZ/M1TijN3b1uNAkPdMjh9YfKLxGwqsfU=
- launchdarkly-domain-verification=c4d35307-e91d-40de-9f7c-ea985b5e30da
- smartsheet-site-validation=JfH0q6jk_VxOeWsSlAnpnyXeaoQs2Oji
- TAILSCALE-6U0NuVIUh5j96gxHjgWH
- apple-domain-verification=kFRThXFxFMlc2MZF
- amazonses:GqKuwSXPRA0X2FiLb/DC8raV473MK5W5pA7Vs8OOk3s=
- SPFv=spf1 include:spf.protection.outlook.com include:spfb.dtn.com include:spfc.dtn.com include:spfd.dtn.com include:spfe.dtn.com include:spff.dtn.com include:spfg.dtn.com ip4:69.41.208.0/20 ip4:67.97.112.0/24 ip4:208.3.212.0/24 ip4:5.135.241.83 ip4:194.53.0.136/31 ip4:83.98.0.240 ip4:83.98.64.200 ip4:83.98.11.47 ip4:83.98.11.48 ip4:66.112.144.10 ip4:66.112.144.11 -all
- hfp+q3ZTDSQ8Wbw50TQSmmDIOuvxHHdW/IGjs0pvBMdIrkCZnqKkwtn65euuRdVo/VHyF2wl4OMVgYkUvhP6Vw==
- 00D1N000002J3YS=1TBV50000000BQ5
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