tum.dk

📜 Historical scan 2026-06-22 02:52:13 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

tum.dk is a .dk domain served by 3 nameservers (ns1.digitalocean.com, ns2.digitalocean.com, ns3.digitalocean.com). It was registered on 14 March 2017 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 156.67.28.242 is hosted by Contabo GmbH (AS51167) in France. Mail is handled by aspmx1.migadu.com, aspmx2.migadu.com. The zone is not DNSSEC-signed, publishes a DMARC policy and has no IPv6 address. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

3 records 75ms

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 Records#

1 records 62ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
156.67.28.242	600s	ial.dk	AS51167	Contabo GmbH	156.67.24.0/21	🇫🇷 France	Lauterbourg

📧 MX Records#

2 records 51ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	14400s	aspmx1.migadu.com	135.125.171.180 135.125.222.87 2001:41d0:303:648a::1 2001:41d0:700:19b4::1 2001:41d0:700:1a57::1 51.38.57.138	ns3160119.ip-135-125-171.eu ns3160230.ip-135-125-222.eu — — — mizu0.migadu.com	AS16276 OVH SAS AS16276 OVH SAS AS16276 OVH SAS AS16276 OVH SAS AS16276 OVH SAS AS16276 OVH SAS
20	14400s	aspmx2.migadu.com	135.125.171.180 135.125.222.87 2001:41d0:303:648a::1 2001:41d0:700:19b4::1 2001:41d0:700:1a57::1 51.38.57.138	ns3160119.ip-135-125-171.eu ns3160230.ip-135-125-222.eu — — — mizu0.migadu.com	AS16276 OVH SAS AS16276 OVH SAS AS16276 OVH SAS AS16276 OVH SAS AS16276 OVH SAS AS16276 OVH SAS

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	156.67.28.242
🔶 Autoconfig	autoconfig.migadu.com → 141.94.97.141

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 285ms

TXT Record
hosted-email-verify=wypirddd
v=spf1 include:spf.migadu.com -all

✉️ SPF#

Policy	Record (tum.dk)
-all (hard fail)	v=spf1 include:spf.migadu.com -all

📨 DMARC#

Policy	Record (_dmarc.tum.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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-09 10:03:40

www CNAME	d1wpc3ay5y6fny.cloudfront.net (all on cloudfront.net) → 65.9.106.37 65.9.106.39 65.9.106.52 65.9.106.61 2600:9000:2024:3000:11:20b2:b380:93a1 2600:9000:2024:7e00:11:20b2:b380:93a1 2600:9000:2024:8200:11:20b2:b380:93a1 2600:9000:2024:a800:11:20b2:b380:93a1 (AS16509)
www vs bare domain	Different networks tum.dk: 156.67.28.242 (AS51167) www.tum.dk: 65.9.106.37 65.9.106.39 65.9.106.52 65.9.106.61 (AS16509) (all like this)
Wildcard	Yes: any name under the zone resolves

🔎 SPF check#

zone-wide SPF report

DNS lookups: 5/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.tum.dk	Rezh6XQMkBtJb1ZN3GsVIJ0IMcbXw48HYh5zfaXmDek

🔗 TLSA / DANE#

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

🔐 DNSSEC#

91ms

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

🏷️ SOA#

61ms

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

📋 Registration#

WHOIS fetched 2026-10-11 11:02:27

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2017-03-14
Expires	2027-03-31 (164d)

📋 WHOIS#

⏱️ Lookup Timing#

75ms

62ms

51ms

AAAA

61ms

TXT

285ms

CAA

50ms

HTTPS

60ms

TLSA

77ms

SOA

61ms

MTA-STS

68ms

DNSSEC

91ms

SRV

259ms

Total

658ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-09 10:03:40	1044ms	3 NS 1 A 2 MX	🔓 Insecure
2026-09-29 19:36:26	1022ms	3 NS 1 A 2 MX	🔓 Insecure
2026-08-27 22:30:35	3521ms	3 NS 1 A 2 MX	🔓 Insecure
2026-08-27 01:38:56	2808ms	3 NS 1 A 2 MX	🔓 Insecure
2026-08-25 17:24:24	3023ms	3 NS 1 A 2 MX	🔓 Insecure
2026-06-28 01:41:12	2742ms	3 NS 1 A 2 MX	🔓 Insecure
2026-06-27 02:03:39	1668ms	3 NS 1 A 2 MX	🔓 Insecure
2026-06-25 12:50:56	4553ms	3 NS 1 A 2 MX	🔓 Insecure
2026-06-22 02:52:13 shown	658ms	3 NS 1 A 2 MX	🔓 Insecure
2026-06-18 07:45:47	2051ms	3 NS 1 A 2 MX	🔓 Insecure