isager.dk DNS records

🖥️ Nameservers2 records 458ms

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 400ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
91.100.23.134	600s	91.100.23.134.generic-hostname.arrownet.dk	AS15516	DKTV A/S	91.100.0.0/15	🇩🇰 Denmark	Copenhagen

📧 MX Records2 records 365ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	600s	mail.protonmail.ch	176.119.200.128 185.205.70.128 185.70.42.128	mail.protonmail.ch mail.protonmail.ch mail.protonmail.ch	AS62371 Proton AG AS62371 Proton AG AS62371 Proton AG
20	600s	mailsec.protonmail.ch	176.119.200.129 185.205.70.129 185.70.42.129	mailsec.protonmail.ch mailsec.protonmail.ch mailsec.protonmail.ch	AS62371 Proton AG AS62371 Proton AG AS62371 Proton AG

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records2 records 831ms

TXT Record
protonmail-verification=4c00dd7e356f8ad818319709b89293d15800ccbe
v=spf1 include:emailsrvr.com include:_spf.protonmail.ch include:_custspf.one.com ~all

✉️ SPF

Policy	Record (isager.dk)
~all (soft fail)	v=spf1 include:emailsrvr.com include:_spf.protonmail.ch include:_custspf.one.com ~all

📨 DMARC

Policy	Record (_dmarc.isager.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:dmarc@isager.dk

📬 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 / DANE4 records 569ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mail.protonmail.ch	DANE-EE · SPKI · SHA-256	6111A5698D23C89E09C36FF833C1487E…
SMTP _25._tcp.mail.protonmail.ch	DANE-EE · SPKI · SHA-256	76BB66711DA416433CA890A5B2E5A053…
SMTP _25._tcp.mailsec.protonmail.ch	DANE-EE · SPKI · SHA-256	6111A5698D23C89E09C36FF833C1487E…
SMTP _25._tcp.mailsec.protonmail.ch	DANE-EE · SPKI · SHA-256	76BB66711DA416433CA890A5B2E5A053…

🔐 DNSSEC731ms

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

🏷️ SOA0ms

Field	Value
Serial	2026081101
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

458ms

A

400ms

MX

365ms

AAAA

413ms

TXT

831ms

CAA

455ms

HTTPS

429ms

TLSA

569ms

SOA

0ms

MTA-STS

550ms

DNSSEC

731ms

SRV

476ms

Total

4576ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-11 17:53:35	4576ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-08-07 02:39:30	5144ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-07-18 07:49:05	1148ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-07-14 01:15:19	5696ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-06-29 14:42:31	559ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-06-24 13:57:27	3176ms	2 NS 1 A 2 MX	⚠️ Bogus	View
2026-06-23 19:02:20	1172ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-18 03:29:58	1006ms	2 NS 1 A 2 MX	🔒 Secure	View