728.dk

📜 Historical scan 2026-09-30 12:06:20 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

728.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 94.231.108.250 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by 728-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, has no 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#

4 records 23ms

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 Records#

1 records 32ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
94.231.108.250	3600s	linux50.unoeuro.com	AS48854	team.blue Denmark A/S	94.231.96.0/20	🇩🇰 Denmark	—

📧 MX Records#

1 records 33ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	728-dk.mail.protection.outlook.com	2a01:111:f403:ca04::10 2a01:111:f403:ca09::20 2a01:111:f403:ca09::22 2a01:111:f403:ca48::10 52.101.181.153 52.101.68.27 52.101.73.126 52.101.91.21	mail-dbapr03cu00100.inbound.protection.outlook.com mail-as8pr05cu00400.inbound.protection.outlook.com mail-am7pr02cu00302.inbound.protection.outlook.com mail-miypr05cu00100.inbound.protection.outlook.com mail-wa4pr04cu00101.inbound.protection.outlook.com mail-db7pr03cu00503.inbound.protection.outlook.com mail-am8pr83cu00106.inbound.protection.outlook.com mail-matpr05cu00105.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.40
🔶 Autoconfig	94.231.108.250

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 71ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records#

2 records 138ms

TXT Record
MS=ms46521678
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (728.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-08 03:18:14

www	94.231.108.250 (AS48854) (address records, no CNAME)
www vs bare domain	Same network 728.dk: 94.231.108.250 (AS48854) www.728.dk: 94.231.108.250 (AS48854)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC zone can be walked (all names enumerable)
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

46ms

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

🏷️ SOA#

39ms

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 yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

23ms

32ms

33ms

AAAA

52ms

TXT

138ms

CAA

41ms

HTTPS

40ms

TLSA

586ms

SOA

39ms

MTA-STS

43ms

DNSSEC

46ms

SRV

71ms

Total

1264ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-08 03:18:14	865ms	4 NS 1 A 1 MX	🔒 Secure
2026-10-01 12:13:33	595ms	4 NS 1 A 1 MX	🔒 Secure
2026-09-30 12:06:20 shown	1264ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-24 19:29:47	691ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-22 14:09:42	938ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-21 23:25:56	695ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-16 12:39:57	2010ms	4 NS 1 A 1 MX	🔒 Secure