sereth.dk DNS records

🖥️ Nameservers2 records 47ms

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 Records1 records 77ms

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 Records5 records 62ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	3600s	aspmx.l.google.com	173.194.221.26 2a00:1450:4010:c01::1a 2a00:1450:4010:c01::1a	lm-in-f26.1e100.net lh-in-x1a.1e100.net lh-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
5	3600s	alt1.aspmx.l.google.com	192.178.158.27 2404:6800:4013:813::1b	lcdels-in-f27.1e100.net lcdels-in-f27.1e100.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::1b	yukulwh-in-f26.1e100.net mad01s14-in-f26.1e100.net yukulwh-in-f27.1e100.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::1a	so-in-f27.1e100.net so-in-f26.1e100.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 Records1 records 209ms

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

🔏 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)

🔐 DNSSEC131ms

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

🏷️ SOA0ms

Field	Value
Serial	2026081401
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 — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

47ms

A

77ms

MX

62ms

AAAA

79ms

TXT

209ms

CAA

59ms

HTTPS

73ms

TLSA

111ms

SOA

0ms

MTA-STS

130ms

DNSSEC

131ms

SRV

89ms

Total

911ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 23:43:07	911ms	2 NS 1 A 5 MX	🔒 Secure	View
2026-08-26 23:07:39	833ms	2 NS 1 A 5 MX	🔒 Secure	View
2026-08-15 08:00:04	2472ms	2 NS 1 A 5 MX	🔒 Secure	View
2026-07-17 21:49:41	1165ms	2 NS 1 A 5 MX	🔒 Secure	View
2026-06-27 22:09:10	1108ms	2 NS 1 A 5 MX	🔒 Secure	View
2026-06-17 13:39:37	2460ms	2 NS 1 A 5 MX	🔒 Secure	View