dfsu.dk DNS records

🖥️ Nameservers4 records 58ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	2a02:2339:1:15c::4562:4562 91.197.248.78	ns1.simply.com ns1.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.simply.com	185.25.141.15 2a02:2339:4006:101::4562:4562	ns2.simply.com ns2.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns3.simply.com	91.197.248.79	ns3.simply.com	AS48854 team.blue Denmark A/S
ns4.simply.com	91.197.248.80	ns4.simply.com	AS48854 team.blue Denmark A/S

🌍 A Records1 records 68ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
93.191.156.121	3600s	linux240.unoeuro.com	AS48854	team.blue Denmark A/S	93.191.152.0/21	🇩🇰 Denmark	—

📧 MX Records1 records 73ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	smtp.google.com	142.250.150.27 142.251.1.26 142.251.1.27 2a00:1450:4010:c05::1a 2a00:1450:4010:c05::1a 2a00:1450:4010:c1c::1b 2a00:1450:4010:c1e::1a 2a00:1450:4010:c1e::1b 64.233.162.26 64.233.162.27	la-in-f27.1e100.net lb-in-f26.1e100.net lb-in-f27.1e100.net li-in-f26.1e100.net li-in-x1a.1e100.net la-in-f27.1e100.net lb-in-f26.1e100.net lb-in-f27.1e100.net li-in-f26.1e100.net li-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	93.191.156.121
🔶 Autoconfig	maildiscover.simply.com → 94.231.108.222

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 80ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	10	10	443	maildiscover.simply.com

📝 TXT Records3 records 200ms

TXT Record
google-site-verification=4yHzfw4wIXfA_XD1cnT6sjAZVeTjLadDo0vkAdE6otU
google-site-verification=yTm8XET4y7CMS-RPFyjInsFP5n6mEuAVJ4FHlOVvM04
v=spf1 include:_spf.google.com include:spf.simply.com -all

✉️ SPF

Policy	Record (dfsu.dk)
-all (hard fail)	v=spf1 include:_spf.google.com include:spf.simply.com -all

📨 DMARC

Policy	Record (_dmarc.dfsu.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)

🔐 DNSSEC118ms

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

🏷️ SOA0ms

Field	Value
Serial	2025042300
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

58ms

A

68ms

MX

73ms

AAAA

72ms

TXT

200ms

CAA

52ms

HTTPS

50ms

TLSA

101ms

SOA

0ms

MTA-STS

90ms

DNSSEC

118ms

SRV

80ms

Total

868ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-28 02:00:59	868ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-08-25 20:22:20	673ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-06-23 18:36:54	977ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-06-23 04:29:13	1049ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-17 02:35:24	2388ms	4 NS 1 A 1 MX	🔒 Secure	View