go42.dk DNS records

🖥️ Nameservers2 records 41ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.curanet.dk	185.25.141.12 2a02:2339:4006:108::123	ns1.curanet.dk ns1.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.curanet.dk	2a02:2339:1:10f::123:123 91.197.248.75	ns2.curanet.dk ns2.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records4 records 48ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.199.108.153	3600s	cdn-185-199-108-153.github.com	AS54113	Fastly, Inc.	185.199.108.0/22	🇺🇸 United States	—
185.199.109.153	3600s	cdn-185-199-109-153.github.com	AS54113	Fastly, Inc.	185.199.108.0/22	🇺🇸 United States	—
185.199.110.153	3600s	cdn-185-199-110-153.github.com	AS54113	Fastly, Inc.	185.199.108.0/22	🇺🇸 United States	—
185.199.111.153	3600s	cdn-185-199-111-153.github.com	AS54113	Fastly, Inc.	185.199.108.0/22	🇺🇸 United States	—

📧 MX Records2 records 31ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	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	3600s	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

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	autodiscover-mf.onlinemail.io → 185.21.40.62
🔶 Autoconfig	autoconfig-mf.onlinemail.io → 185.21.40.62

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records5 records 138ms

TXT Record
_globalsign-domain-verification=Z4aRAYbRVag1q7OY6AUMs1CF9NvEk9Lp2duHSqQV4K
google-site-verification=-vNCUfWo8_fHr9-GHrcbLe_RfRgIAd0yWPJtiGFGnhQ
protonmail-verification=aa7327f75c12b5f45aaa6bb7c6182a4dd4079873
v=spf1 include:_spf.protonmail.ch ~all
v=spf1 include:spf.onlinemail.io -all

✉️ SPF

⚠ Multiple SPF records — RFC 7208 §4.5 violation (receivers must treat this as permerror)

Policy	Record (go42.dk)
~all (soft fail)	v=spf1 include:_spf.protonmail.ch ~all
-all (hard fail)	v=spf1 include:spf.onlinemail.io -all

📨 DMARC

Policy	Record (_dmarc.go42.dk)
p=quarantine	v=DMARC1; p=quarantine

📬 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 84ms

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

🔐 DNSSEC81ms

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

🏷️ SOA0ms

Field	Value
Serial	2026060101
Primary NS (MNAME)	ns1.curanet.dk
Responsible (RNAME)	hostmaster@curanet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

41ms

A

48ms

MX

31ms

AAAA

54ms

TXT

138ms

CAA

45ms

HTTPS

53ms

TLSA

84ms

SOA

0ms

MTA-STS

61ms

DNSSEC

81ms

SRV

70ms

Total

658ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-25 03:06:43	658ms	2 NS 4 A 2 MX	🔒 Secure	View
2026-06-29 09:02:37	871ms	2 NS 4 A 2 MX	🔒 Secure	View
2026-06-27 07:39:02	2514ms	2 NS 4 A 2 MX	🔒 Secure	View
2026-06-24 21:01:20	4388ms	2 NS 4 A 2 MX	🔒 Secure	View
2026-06-23 12:20:09	920ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-21 20:51:48	1172ms	2 NS 4 A 2 MX	🔒 Secure	View
2026-06-21 18:01:58	1159ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-17 10:24:51	821ms	2 NS 4 A 2 MX	🔒 Secure	View