costech.dk

📜 Historical scan 2026-06-20 17:35:06 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

costech.dk is a .dk domain served by 2 nameservers (ns-fi.elisa.net, ns-se.elisa.net). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 45.151.5.1 is hosted by Zone Media OU (AS49604) in Estonia. Mail is handled by costech-dk.mail.protection.outlook.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#

2 records 49ms

Nameserver	IP addresses	PTR	ASN / ISP
ns-fi.elisa.net	193.229.0.49 2001:671:1::20	ns-fi.elisa.net ns-fi.elisa.net	AS719 Elisa Oyj AS719 Elisa Oyj
ns-se.elisa.net	2001:671:1::40 62.248.254.2	ns-se.elisa.net ns-se.elisa.net	AS719 Elisa Oyj AS719 Elisa Oyj

🌍 A Records#

1 records 101ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
45.151.5.1	3600s	vs-dip-5-1.rid20.zonevs.eu	AS49604	Zone Media OU	45.151.4.0/22	🇪🇪 Estonia	—

📧 MX Records#

1 records 91ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	costech-dk.mail.protection.outlook.com	2a01:111:f403:ca04::2 2a01:111:f403:ca04::6 2a01:111:f403:ca04::d 2a01:111:f403:ca09::c 52.101.68.16 52.101.68.18 52.101.68.36 52.101.73.11	mail-du2pr03cu00102.inbound.protection.outlook.com mail-db4pr02cu00406.inbound.protection.outlook.com mail-db6pr03cu00105.inbound.protection.outlook.com mail-as8pr05cu00304.inbound.protection.outlook.com mail-db4pr02cu00400.inbound.protection.outlook.com mail-db4pr02cu00302.inbound.protection.outlook.com mail-db5pr02cu00104.inbound.protection.outlook.com mail-am1pr04cu00103.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 → 40.104.116.8

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 155ms

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

📝 TXT Records#

2 records 293ms

TXT Record
1password-site-verification=H7XA5MTH2NEKNISNVFF22YYG2I
v=spf1 include:spf.protection.outlook.com include:spf.simply.com include:spf.comendosystems.com include:emsd1.com ip4:46.36.211.197 ip4:91.235.232.0/24 -all

✉️ SPF#

Policy	Record (costech.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:spf.simply.com include:spf.comendosystems.com include:emsd1.com ip4:46.36.211.197 ip4:91.235.232.0/24 -all

📨 DMARC#

Policy	Record (_dmarc.costech.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:rua@costech.dk,mailto:dmarc_agg@vali.email; ruf=mailto:ruf@costech.dk; fo=1;

📬 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 05:57:46

www	45.151.5.1 (AS49604) (address records, no CNAME)
www vs bare domain	Same network costech.dk: 45.151.5.1 (AS49604) www.costech.dk: 45.151.5.1 (AS49604)
Wildcard	No

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-costech-dk._domainkey.bangbonsomer.onmicrosoft.com	RSA · ~2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 6/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

149ms

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

🏷️ SOA#

70ms

Field	Value
Serial	2025022412
Primary NS (MNAME)	ns-fi.elisa.net
Responsible (RNAME)	hostmaster@elisa.fi
Refresh	3600s
Retry	900s
Expire	604800s
Minimum (neg-cache TTL)	3600s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

49ms

101ms

91ms

AAAA

70ms

TXT

293ms

CAA

99ms

HTTPS

100ms

TLSA

240ms

SOA

70ms

MTA-STS

79ms

DNSSEC

149ms

SRV

155ms

Total

839ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-06-28 20:08:08	1332ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-25 22:14:04	1581ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-24 09:08:03	1184ms	2 NS 1 A 1 MX	❓ Unknown
2026-06-20 17:35:06 shown	839ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-19 01:48:56	6933ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-16 22:36:03	804ms	2 NS 1 A 1 MX	🔓 Insecure