synref.dk

📜 Historical scan 2026-08-27 12:15:33 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

synref.dk is a .dk domain served by 2 nameservers (ns1.regsj.dk, ns2.regsj.dk). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 20.16.1.238 is hosted by Microsoft Corporation (AS8075) in The Netherlands. The zone is not DNSSEC-signed, 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#

2 records 41ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.regsj.dk	91.198.168.21	ns1.regsj.dk	AS43806 Region Sjaelland
ns2.regsj.dk	91.198.168.22	svsls200v002.regsj.intern	AS43806 Region Sjaelland

🌍 A Records#

1 records 43ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
20.16.1.238	28800s	—	AS8075	Microsoft Corporation	20.0.0.0/11	🇳🇱 The Netherlands	Amsterdam

📧 MX Records#

📧

No MX records found

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

3 records 345ms

TXT Record
_10sj1fv26zmfly9nqek8rtwmn32t2kx
_ua96pld72gzut5gfv3pdt40numie908
v=spf1 include:sparkpostmail.com -all

✉️ SPF#

Policy	Record (synref.dk)
-all (hard fail)	v=spf1 include:sparkpostmail.com -all

📨 DMARC#

Policy	Record (_dmarc.synref.dk)
p=reject	v=DMARC1;p=reject;sp=reject;rua=mailto:gadio9eh@ag.eu.dmarcadvisor.com;ruf=mailto:gadio9eh@fr.eu.dmarcadvisor.com;fo=1

📬 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 2026-10-12 03:14:31

www	20.16.1.238 (AS8075) (address records, no CNAME)
www vs bare domain	Same network synref.dk: 20.16.1.238 (AS8075) www.synref.dk: 20.16.1.238 (AS8075)
Wildcard	No

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

2072ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA#

0ms

Field	Value
Serial	2383
Primary NS (MNAME)	svrdc202v002.regsj.intern
Responsible (RNAME)	hostmaster@regsj.dk
Refresh	900s
Retry	90s
Expire	86400s
Minimum (neg-cache TTL)	3600s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

41ms

43ms

47ms

AAAA

52ms

TXT

345ms

CAA

34ms

HTTPS

55ms

TLSA

78ms

SOA

0ms

MTA-STS

113ms

DNSSEC

2072ms

SRV

112ms

Total

2449ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 19:22:53	898ms	2 NS 1 A 0 MX	🔓 Insecure
2026-09-29 19:23:39	666ms	2 NS 1 A 0 MX	🔓 Insecure
2026-09-25 04:40:21	587ms	2 NS 1 A 0 MX	🔓 Insecure
2026-08-27 12:15:33 shown	2449ms	2 NS 1 A 0 MX	🔓 Insecure
2026-06-18 03:02:46	2511ms	2 NS 1 A 0 MX	🔓 Insecure