sereth.dk

📜 Historical scan 2026-09-30 23:52:33 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

sereth.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 35.214.221.100 is hosted by Google Ireland Limited (AS43515) in The Netherlands. 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 32ms

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 49ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
35.214.221.100	3600s	100.221.214.35.bc.googleusercontent.com	AS43515	Google Ireland Limited	35.214.128.0/17	🇳🇱 The Netherlands	Groningen

📧 MX Records#

5 records 51ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	3600s	aspmx.l.google.com	2a00:1450:4010:c0f::1b 2a00:1450:4010:c0f::1b 74.125.131.26	lt-in-f27.1e100.net lt-in-x1b.1e100.net lu-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
5	3600s	alt1.aspmx.l.google.com	192.178.158.26 2404:6800:4013:813::1a	lcdels-in-f26.1e100.net lcdels-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	3600s	alt2.aspmx.l.google.com	173.194.41.26 173.194.41.26 2404:6800:4001:c01::1a	yukulwh-in-f26.1e100.net mad01s14-in-f26.1e100.net yukulwh-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
10	3600s	alt3.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	alt4.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

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	sereth.dk → 35.214.221.100
🔶 Autoconfig	sereth.dk → 35.214.221.100

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 155ms

TXT Record
v=spf1 +a +mx +a:ns1.es50.siteground.eu include:_spf.mailspamprotection.com ~all

✉️ SPF#

Policy	Record (sereth.dk)
~all (soft fail)	v=spf1 +a +mx +a:ns1.es50.siteground.eu include:_spf.mailspamprotection.com ~all

📨 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 2026-10-15 12:44:44

www	35.214.221.100 (AS15169) (address records, no CNAME)
www vs bare domain	Same network sereth.dk: 35.214.221.100 (AS15169) www.sereth.dk: 35.214.221.100 (AS15169)
Wildcard	Yes: any name under the zone resolves
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 4/10 · policy: ~all

No problems found

🔏 ACME Challenge#

Type	Name	Value
CNAME	_acme-challenge.sereth.dk	sereth.dk

🔗 TLSA / DANE#

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

🔐 DNSSEC#

76ms

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

🏷️ SOA#

34ms

Field	Value
Serial	2026091301
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

32ms

49ms

51ms

AAAA

34ms

TXT

155ms

CAA

45ms

HTTPS

51ms

TLSA

141ms

SOA

34ms

MTA-STS

56ms

DNSSEC

76ms

SRV

66ms

Total

742ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-15 12:44:44	545ms	2 NS 1 A 5 MX	🔒 Secure
2026-09-30 23:52:33 shown	742ms	2 NS 1 A 5 MX	🔒 Secure
2026-09-14 23:55:55	2152ms	2 NS 1 A 5 MX	🔒 Secure
2026-08-27 23:43:07	911ms	2 NS 1 A 5 MX	🔒 Secure
2026-08-26 23:07:39	833ms	2 NS 1 A 5 MX	🔒 Secure
2026-08-15 08:00:04	2472ms	2 NS 1 A 5 MX	🔒 Secure
2026-07-17 21:49:41	1165ms	2 NS 1 A 5 MX	🔒 Secure
2026-06-27 22:09:10	1108ms	2 NS 1 A 5 MX	🔒 Secure
2026-06-17 13:39:37	2460ms	2 NS 1 A 5 MX	🔒 Secure