dfu.dk DNS records

🖥️ Nameservers3 records 54ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.digitalocean.com	172.64.52.210 2606:4700:52::ac40:34d2	ns1.digitalocean.com ns1.digitalocean.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
ns2.digitalocean.com	172.64.53.21 2606:4700:5a::ac40:3515	ns2.digitalocean.com ns2.digitalocean.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
ns3.digitalocean.com	172.64.49.209 2606:4700:52::ac40:31d1	ns3.digitalocean.com ns3.digitalocean.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records1 records 54ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
143.244.197.248	3600s	—	AS14061	DigitalOcean, LLC	143.244.196.0/22	🇳🇱 The Netherlands	Amsterdam

📧 MX Records1 records 59ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	10252s	smtp.google.com	173.194.220.26 173.194.221.26 173.194.221.27 173.194.222.27 2a00:1450:4010:c09::1b 2a00:1450:4010:c09::1b 2a00:1450:4010:c0a::1a 2a00:1450:4010:c0a::1a 2a00:1450:4010:c0a::1b 2a00:1450:4010:c0a::1b 2a00:1450:4010:c0b::1b 2a00:1450:4010:c0b::1b 64.233.164.27	lk-in-f26.1e100.net lm-in-f26.1e100.net lm-in-f27.1e100.net lo-in-f27.1e100.net lk-in-f27.1e100.net lk-in-x1b.1e100.net lm-in-f26.1e100.net lm-in-x1a.1e100.net lm-in-f27.1e100.net lm-in-x1b.1e100.net lo-in-x1b.1e100.net lo-in-f27.1e100.net lf-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 AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.40

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records3 records 657ms

TXT Record
google-site-verification=GDkVm_ZpSbE3uz7kDsrnnOp8pwup1zRWKzxw9Fh8n8c
MS=ms78327169
v=spf1 include:_spf.google.com include:spf.simply.com ~all

✉️ SPF

Policy	Record (dfu.dk)
~all (soft fail)	v=spf1 include:_spf.google.com include:spf.simply.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 Records1 records 53ms

Flags	Tag	Value
0	issue	letsencrypt.org

🔗 TLSA / DANE

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

🔐 DNSSEC89ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA52ms

Field	Value
Serial	0
Primary NS (MNAME)	ns1.digitalocean.com
Responsible (RNAME)	hostmaster@dfu.dk
Refresh	10800s
Retry	3600s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

54ms

A

54ms

MX

59ms

AAAA

77ms

TXT

657ms

CAA

53ms

HTTPS

54ms

TLSA

114ms

SOA

52ms

MTA-STS

101ms

DNSSEC

89ms

SRV

205ms

Total

1238ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-06-27 05:45:45	1238ms	3 NS 1 A 1 MX	🔓 Insecure	View
2026-06-25 09:37:21	2958ms	3 NS 1 A 1 MX	🔓 Insecure	View
2026-06-17 02:36:04	699ms	3 NS 1 A 1 MX	🔓 Insecure	View