flex4b.dk DNS records

🖥️ Nameservers2 records 49ms

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 Records1 records 52ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
89.163.137.202	3600s	—	AS24961	WIIT AG	89.163.128.0/17	🇩🇪 Germany	—

📧 MX Records5 records 35ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	3600s	aspmx.l.google.com	2a00:1450:4010:c0a::1a 2a00:1450:4010:c0a::1a 64.233.164.27	lm-in-x1a.1e100.net lm-in-f26.1e100.net lf-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
5	3600s	alt1.aspmx.l.google.com	192.178.158.27 2404:6800:4003:c26::1b	lcdels-in-f27.1e100.net so-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	3600s	alt2.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
10	3600s	alt3.aspmx.l.google.com	192.178.230.27 2404:6800:400b:c01b::1a	yunrtab-in-f27.1e100.net yunrtab-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	3600s	alt4.aspmx.l.google.com	192.178.230.27 2404:6800:400b:c01b::1a	yunrtab-in-f27.1e100.net yunrtab-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	89.163.137.202
🔶 Autoconfig	89.163.137.202

🔷 AAAA Records (IPv6)1 records 59ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2001:4ba0:92c1:49::2	3600s	—	AS24961	WIIT AG	2001:4ba0:0:0:0:0:0:0/31	🇩🇪 Germany	—

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records1 records 1323ms

TXT Record
v=spf1 a mx ip4:89.163.137.202 ip6:2001:4ba0:92c1:49::2 include:_spf.google.com ~all

✉️ SPF

Policy	Record (flex4b.dk)
~all (soft fail)	v=spf1 a mx ip4:89.163.137.202 ip6:2001:4ba0:92c1:49::2 include:_spf.google.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

🔗 TLSA / DANE

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

🔐 DNSSEC123ms

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

🏷️ SOA42ms

Field	Value
Serial	2021033100
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

49ms

A

52ms

MX

35ms

AAAA

59ms

TXT

1323ms

CAA

52ms

HTTPS

44ms

TLSA

1199ms

SOA

42ms

MTA-STS

126ms

DNSSEC

123ms

SRV

376ms

Total

2807ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-06-20 03:23:34	2807ms	2 NS 1 A 5 MX	🔒 Secure	View
2026-06-17 09:49:38	741ms	2 NS 1 A 5 MX	🔒 Secure	View