dtdv.dk

📜 Historical scan 2026-09-26 02:04:22 · ← Latest scan

dtdv.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by dtdv-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers

4 records 30ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	2a02:2339:1:15c::4562:4562 91.197.248.78	ns1.simply.com ns1.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.simply.com	185.25.141.15 2a02:2339:4006:101::4562:4562	ns2.simply.com ns2.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns3.simply.com	91.197.248.79	ns3.simply.com	AS48854 team.blue Denmark A/S
ns4.simply.com	91.197.248.80	ns4.simply.com	AS48854 team.blue Denmark A/S

🌍 A Records

🌍

No A records found

📧 MX Records

1 records 44ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	dtdv-dk.mail.protection.outlook.com	2a01:111:f403:c967::c 2a01:111:f403:ca09::26 2a01:111:f403:ca09::a 2a01:111:f403:ca48::8 52.101.103.137 52.101.68.15 52.101.68.21 52.101.73.120	mail-cpjpr05cu00204.inbound.protection.outlook.com mail-am8pr83cu00106.inbound.protection.outlook.com mail-am7pr02cu00202.inbound.protection.outlook.com mail-miypr02cu00100.inbound.protection.outlook.com mail-miypr02cu00101.inbound.protection.outlook.com mail-db6pr03cu00107.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-am7pr02cu00300.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.56
🔶 Autoconfig	maildiscover.simply.com → 94.231.108.222

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records

2 records 49ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	10	10	443	maildiscover.simply.com
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records

1 records 130ms

TXT Record
v=spf1 include:outlook.com include:spf.simply.com -all

✉️ SPF

Policy	Record (dtdv.dk)
-all (hard fail)	v=spf1 include:outlook.com include:spf.simply.com -all

📨 DMARC

Policy	Record (_dmarc.dtdv.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:dmarc@robot.simply.com; ruf=mailto:dmarc@robot.simply.com;

📬 MTA-STS

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records

✗ No CAA records — any CA may issue certificates

🧩 Web & zone

latest probe, not this scan · checked 2026-10-02 03:21:10

www	NXDOMAIN
Wildcard	No
Denial of existence	NSEC zone can be walked (all names enumerable)
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

✍️ DKIM keys

4 found

Selector	CNAME	Key
k1	dkim.mcsv.net	RSA · ~1024 bit below 2048 bit
s1	s1.domainkey.u17474789.wl040.sendgrid.net	RSA · ~2048 bit
s2	s2.domainkey.u17474789.wl040.sendgrid.net	RSA · ~1024 bit below 2048 bit
selector1	selector1-dtdv-dk._domainkey.dtdv.onmicrosoft.com	RSA · ~1024 bit below 2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check

zone-wide SPF report

DNS lookups: 3/10 · policy: -all

No problems found

🔗 TLSA / DANE

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC

71ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	resolution failed: ncache nxrrset

🏷️ SOA

0ms

Field	Value
Serial	2025042300
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

30ms

29ms

44ms

AAAA

29ms

TXT

130ms

CAA

26ms

HTTPS

42ms

TLSA

656ms

SOA

0ms

MTA-STS

53ms

DNSSEC

71ms

SRV

49ms

Total

1180ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-10-02 03:21:10	1274ms	4 NS 0 A 1 MX	🔒 Secure
2026-09-26 02:04:22 shown	1180ms	4 NS 0 A 1 MX	🔒 Secure
2026-09-13 10:56:36	735ms	4 NS 0 A 1 MX	🔒 Secure
2026-09-10 09:05:40	1475ms	4 NS 0 A 1 MX	🔒 Secure
2026-08-27 16:46:12	1351ms	4 NS 0 A 1 MX	🔒 Secure
2026-06-27 06:46:19	959ms	4 NS 0 A 1 MX	🔒 Secure
2026-06-24 08:02:25	1543ms	4 NS 0 A 1 MX	⚠️ Bogus
2026-06-24 02:25:37	1173ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-17 04:50:04	1815ms	4 NS 0 A 1 MX	🔒 Secure