sfeefterskole.dk DNS records

🖥️ Nameservers2 records 34ms

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 26ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
3.125.228.140	600s	ec2-3-125-228-140.eu-central-1.compute.amazonaws.com	AS16509	Amazon.com, Inc.	3.96.0.0/11	🇩🇪 Germany	Frankfurt am Main

📧 MX Records5 records 51ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	3600s	aspmx.l.google.com	2a00:1450:4010:c20::1a 64.233.164.27	yulppbn-in-f26.1e100.net lf-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	3600s	alt1.aspmx.l.google.com	192.178.158.26 2404:6800:4013:813::1b	lcdels-in-f26.1e100.net lcdels-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	3600s	alt2.aspmx.l.google.com	173.194.41.27 173.194.41.27 2404:6800:4001:c01::1a	mad01s14-in-f27.1e100.net yukulwh-in-f27.1e100.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

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records2 records 185ms

TXT Record
google-site-verification=oY-6IIv9r5wIWgbOdHzItTFvySA7VZZ0DokauQRbIMw
v=spf1 include:_spf.google.com ~all

✉️ SPF

Policy	Record (sfeefterskole.dk)
~all (soft fail)	v=spf1 include:_spf.google.com ~all

📨 DMARC

Policy	Record (_dmarc.sfeefterskole.dk)
p=none (monitor only)	v=DMARC1; p=none

📬 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

🔗 TLSA / DANE

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

🔐 DNSSEC114ms

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

🏷️ SOA0ms

Field	Value
Serial	2026081201
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

34ms

A

26ms

MX

51ms

AAAA

43ms

TXT

185ms

CAA

47ms

HTTPS

42ms

TLSA

93ms

SOA

0ms

MTA-STS

104ms

DNSSEC

114ms

SRV

92ms

Total

914ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 10:29:53	914ms	2 NS 1 A 5 MX	🔒 Secure	View
2026-08-13 02:19:59	1475ms	2 NS 1 A 5 MX	🔒 Secure	View
2026-07-18 13:45:27	5034ms	2 NS 1 A 5 MX	🔒 Secure	View
2026-07-16 08:35:58	3301ms	2 NS 1 A 5 MX	🔒 Secure	View
2026-06-25 19:38:16	4167ms	2 NS 1 A 5 MX	🔒 Secure	View
2026-06-21 00:37:11	1112ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-18 04:25:09	898ms	2 NS 1 A 5 MX	🔒 Secure	View