underslæb.dk xn--underslb-p0a.dk

📜 Historical scan 2026-10-05 21:12:47 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

underslæb.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 16 March 2017 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 5.103.15.206 is hosted by FIBIA P/S (AS44869) in Denmark. Mail is handled by .. The zone is DNSSEC-signed and validates, has no 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 163ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records#

1 records 158ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
5.103.15.206	3600s	5.103.15.206.static.fibianet.dk	AS44869	FIBIA P/S	5.103.0.0/16	🇩🇰 Denmark	Odense

📧 MX Records#

1 records 136ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	. 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#

📝

No TXT records found

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 DMARC#

✗ No DMARC record — mail spoofing not restricted

📬 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 2026-10-11 06:04:50

www CNAME	xn--underslb-p0a.dk (all on xn--underslb-p0a.dk) → 5.103.15.206 (AS44869)
www vs bare domain	Same network underslæb.dk: 5.103.15.206 (AS44869) www.underslæb.dk: 5.103.15.206 (AS44869)
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔗 TLSA / DANE#

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

🔐 DNSSEC#

479ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	ncache nxdomain overridden by dig AD

🏷️ SOA#

213ms

Field	Value
Serial	2026100501
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

WHOIS fetched 2026-10-05 21:18:50

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2017-03-16
Expires	2027-03-31 (159d)

📋 WHOIS#

⏱️ Lookup Timing#

163ms

158ms

136ms

AAAA

205ms

TXT

611ms

CAA

168ms

HTTPS

114ms

TLSA

682ms

SOA

213ms

MTA-STS

154ms

DNSSEC

479ms

SRV

207ms

Total

2923ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-11 06:04:50	468ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-05 21:12:47 shown	2923ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-21 18:45:14	746ms	2 NS 1 A 4 MX	🔒 Secure
2026-08-27 21:46:43	673ms	2 NS 1 A 4 MX	🔒 Secure
2026-08-18 10:14:08	5000ms	2 NS 1 A 4 MX	🔒 Secure
2026-06-17 17:33:30	723ms	2 NS 1 A 4 MX	🔒 Secure