expression.dk

📜 Historical scan 2026-09-28 00:23:23 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

expression.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was registered on 15 April 2008 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.41.51 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by expression-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, 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#

2 records 35ms

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 Records#

1 records 31ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.41.51	300s	linux25.curanet.dk	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records#

1 records 41ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	expression-dk.mail.protection.outlook.com	2a01:111:f403:ca04::9 2a01:111:f403:ca21::c 2a01:111:f403:ca3c::a 2a01:111:f403:ca48::8 52.101.103.137 52.101.68.15 52.101.68.25 52.101.73.123	mail-db7pr03cu00601.inbound.protection.outlook.com mail-matpr04cu00204.inbound.protection.outlook.com mail-zrxpr07cu00102.inbound.protection.outlook.com mail-miypr02cu00100.inbound.protection.outlook.com mail-miypr02cu00101.inbound.protection.outlook.com mail-db6pr03cu00107.inbound.protection.outlook.com mail-db8pr02cu00101.inbound.protection.outlook.com mail-am6pr02cu00203.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 → 40.104.116.56
🔶 Autoconfig	185.21.41.51

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 145ms

TXT Record
MS=ms35038064
v=spf1 include:spf.protection.outlook.com include:spf.curanet.dk include:spf2.onlineplus.dk -all

✉️ SPF#

Policy	Record (expression.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:spf.curanet.dk include:spf2.onlineplus.dk -all

📨 DMARC#

Policy	Record (_dmarc.expression.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 2026-10-13 17:38:58

www	185.21.41.51 (AS48854) (address records, no CNAME)
www vs bare domain	Same network expression.dk: 185.21.41.51 (AS48854) www.expression.dk: 185.21.41.51 (AS48854)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 11/10 · policy: -all

error 11 DNS lookups: the limit is 10, so a receiver whose evaluation gets past the 10th returns permerror (SPF fails)

🔗 TLSA / DANE#

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

🔐 DNSSEC#

71ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2025091001
Primary NS (MNAME)	ns1.curanet.dk
Responsible (RNAME)	hostmaster@curanet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-10 18:36:33

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2008-04-15
Expires	2027-04-30 (195d)

📋 WHOIS#

⏱️ Lookup Timing#

35ms

31ms

41ms

AAAA

38ms

TXT

145ms

CAA

32ms

HTTPS

42ms

TLSA

373ms

SOA

0ms

MTA-STS

51ms

DNSSEC

71ms

SRV

74ms

Total

930ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-29 21:42:52	1026ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-28 00:23:23 shown	930ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-07 19:30:06	897ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-25 14:31:31	1081ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-19 20:43:50	2192ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-17 09:09:55	1203ms	2 NS 1 A 1 MX	🔒 Secure