sentryline.dk

📜 Historical scan 2026-06-17 12:21:05 · ← Latest scan

sentryline.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 12 December 2023 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by sentryline-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

3 records 57ms

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

🌍 A Records

🌍

No A records found

📧 MX Records

1 records 77ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	—	sentryline-dk.mail.protection.outlook.com	2a01:111:f403:ca04::2 2a01:111:f403:ca04::6 2a01:111:f403:ca09::1 2a01:111:f403:ca09::d 52.101.68.15 52.101.68.39 52.101.73.153 52.101.73.22	mail-du2pr03cu00102.inbound.protection.outlook.com mail-db4pr02cu00406.inbound.protection.outlook.com mail-as9pr07cu00301.inbound.protection.outlook.com mail-as9pr05cu01305.inbound.protection.outlook.com mail-db6pr03cu00107.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-as8pr05cu00401.inbound.protection.outlook.com mail-am7pr05cu00106.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

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records

2 records 436ms

TXT Record
MS=ms47847536
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF

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

📨 DMARC

Policy	Record (_dmarc.sentryline.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 19:15:09

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

🔎 SPF check

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE

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

🔐 DNSSEC

184ms

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

🏷️ SOA

52ms

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

WHOIS fetched 2026-10-02 19:44:52

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2023-12-12
Expires	2026-12-11 (69d)

📋 WHOIS

⏱️ Lookup Timing

57ms

67ms

77ms

AAAA

80ms

TXT

436ms

CAA

61ms

HTTPS

59ms

TLSA

194ms

SOA

52ms

MTA-STS

77ms

DNSSEC

184ms

SRV

0ms

Total

3633ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-10-02 19:15:09	1049ms	3 NS 0 A 1 MX	🔒 Secure
2026-09-25 18:13:09	1180ms	3 NS 0 A 1 MX	🔒 Secure
2026-08-27 09:19:46	976ms	3 NS 0 A 1 MX	🔒 Secure
2026-07-02 16:27:34	2048ms	3 NS 0 A 1 MX	🔒 Secure
2026-06-21 13:44:42	695ms	3 NS 0 A 1 MX	🔒 Secure
2026-06-21 10:20:56	1168ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-17 12:21:05 shown	3633ms	3 NS 0 A 1 MX	🔒 Secure