sser.dk

📜 Historical scan 2026-06-24 04:46:03 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

sser.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 24 June 1998 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 20.40.202.37 is hosted by Microsoft Corporation (AS8075) in United States. Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 3 more. 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 243ms

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 240ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
20.40.202.37	600s	—	AS8075	Microsoft Corporation	20.40.0.0/14	🇺🇸 United States	Des Moines

📧 MX Records#

5 records 236ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	3600s	aspmx.l.google.com	142.250.147.27 2a00:1450:4025:c03::1a	rd-in-f27.1e100.net rc-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	3600s	alt1.aspmx.l.google.com	192.178.211.26 2404:6800:4000:1025::1b	lcbomp-in-f26.1e100.net lcbomp-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	3600s	alt2.aspmx.l.google.com	172.253.158.27 2404:6800:4003:c26::1b	so-in-f27.1e100.net so-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	3600s	alt3.aspmx.l.google.com	108.177.125.27 2404:6800:4008:c01::1b	tp-in-f27.1e100.net tp-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	3600s	alt4.aspmx.l.google.com	192.178.230.26 2404:6800:400b:c01b::1a	yunrtab-in-f26.1e100.net yunrtab-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC

🔷 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 10:33:08

www CNAME	sser.dk (all on sser.dk) → 20.40.202.37 (AS8075)
www vs bare domain	Same network sser.dk: 20.40.202.37 (AS8075) www.sser.dk: 20.40.202.37 (AS8075)
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#

304ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA#

224ms

Field	Value
Serial	2026061001
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 2026-10-11 08:03:54

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1998-06-24
Expires	2027-06-30 (252d)

📋 WHOIS#

⏱️ Lookup Timing#

243ms

240ms

236ms

AAAA

226ms

TXT

392ms

CAA

218ms

HTTPS

240ms

TLSA

339ms

SOA

224ms

MTA-STS

236ms

DNSSEC

304ms

SRV

233ms

Total

1367ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-11 10:33:08	794ms	2 NS 1 A 5 MX	🔒 Secure
2026-09-26 10:59:26	627ms	2 NS 1 A 5 MX	🔒 Secure
2026-09-12 15:37:27	1368ms	2 NS 1 A 5 MX	🔒 Secure
2026-09-05 14:49:44	687ms	2 NS 1 A 5 MX	🔒 Secure
2026-08-18 07:21:10	5321ms	2 NS 1 A 5 MX	🔒 Secure
2026-08-12 20:13:48	6483ms	2 NS 1 A 5 MX	🔒 Secure
2026-07-16 03:07:41	1194ms	2 NS 1 A 5 MX	🔒 Secure
2026-07-13 08:46:01	1179ms	2 NS 1 A 5 MX	🔒 Secure
2026-07-07 00:46:35	2193ms	2 NS 1 A 5 MX	🔒 Secure
2026-06-26 08:31:16	1727ms	2 NS 1 A 5 MX	🔒 Secure
2026-06-25 13:03:29	2135ms	2 NS 1 A 5 MX	🔒 Secure
2026-06-24 04:46:03 shown	1367ms	2 NS 1 A 5 MX	🔒 Secure
2026-06-23 18:43:13	922ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-17 13:18:38	2561ms	2 NS 1 A 5 MX	🔒 Secure