serono.dk

📜 Historical scan 2026-06-22 23:33:39 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

serono.dk is a .dk domain served by 5 nameservers (ns1.brandshelter.com, ns2.brandshelter.de, ns3.brandshelter.info and 2 more). It was registered on 14 July 1997 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by .. 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#

5 records 42ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.brandshelter.com	193.227.117.9 2a04:2b00:14cc::9	ns1.brandshelter.com —	AS1921 ipcom GmbH AS1921 ipcom GmbH
ns2.brandshelter.de	194.50.187.11 2a04:2b00:14dd::11	ns2.brandshelter.de ns11.j.centralnic-dns.com	AS207021 ipcom GmbH AS1921 ipcom GmbH
ns3.brandshelter.info	194.0.182.12 2a04:2b00:14ee::12	ns3.brandshelter.info ns12.k.centralnic-dns.com	AS1921 ipcom GmbH AS1921 ipcom GmbH
ns4.brandshelter.net	193.227.117.10 2a04:2b00:14cc::10	ns4.brandshelter.net ns10.i.centralnic-dns.com	AS1921 ipcom GmbH AS1921 ipcom GmbH
ns5.brandshelter.us	194.50.187.14 2a04:2b00:14dd::14	ns5.brandshelter.us ns14.j.centralnic-dns.com	AS207021 ipcom GmbH AS1921 ipcom GmbH

🌍 A Records#

🌍

No A records found

📧 MX Records#

1 records 65ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	600s	. Null MX — domain accepts no email (RFC 7505)

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 350ms

TXT Record
v=spf1 -all

✉️ SPF#

Policy	Record (serono.dk)
-all (hard fail)	v=spf1 -all

📨 DMARC#

Policy	Record (_dmarc.serono.dk)
p=reject	v=DMARC1;p=reject;sp=reject;pct=100;rua=mailto:dmarcrpt@merckgroup.com;ruf=mailto:dmarcrpt@merckgroup.com;ri=86400;aspf=s;adkim=s;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 2026-10-14 02:17:39

www	Exists, no address
www vs bare domain	Neither resolves serono.dk: no address www.serono.dk: no address
Wildcard	No

🔎 SPF check#

zone-wide SPF report

DNS lookups: 0/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

88ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	resolution failed: ncache nxrrset

🏷️ SOA#

84ms

Field	Value
Serial	2026060901
Primary NS (MNAME)	ns1.brandshelter.com
Responsible (RNAME)	tech@brandshelter.com
Refresh	10800s
Retry	3600s
Expire	604800s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-26 15:17:02

Field	Value
Registrar	Key-Systems GmbH
Registered	1997-07-14
Expires	2027-09-30 (337d)

🔗 Same registrant#

0 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

No other domain with this registrant in our WHOIS data yet

📋 WHOIS#

⏱️ Lookup Timing#

42ms

65ms

AAAA

47ms

TXT

350ms

CAA

77ms

HTTPS

67ms

TLSA

51ms

SOA

84ms

MTA-STS

58ms

DNSSEC

88ms

SRV

102ms

Total

843ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-24 08:04:27	645ms	5 NS 0 A 1 MX	🔓 Insecure
2026-08-27 00:28:13	669ms	5 NS 0 A 1 MX	🔓 Insecure
2026-07-25 13:45:48	2652ms	5 NS 0 A 1 MX	🔓 Insecure
2026-06-25 21:00:33	738ms	5 NS 0 A 1 MX	🔓 Insecure
2026-06-24 04:20:30	1182ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-22 23:33:39 shown	843ms	5 NS 0 A 1 MX	🔓 Insecure
2026-06-18 11:21:55	598ms	5 NS 0 A 1 MX	🔓 Insecure
2026-06-18 11:21:15	959ms	5 NS 0 A 1 MX	🔓 Insecure