by2mc.dk

📜 Historical scan 2026-06-20 08:56:32 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

by2mc.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was registered on 27 March 2019 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by by2mc-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 45ms

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#

🌍

No A records found

📧 MX Records#

1 records 101ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	by2mc-dk.mail.protection.outlook.com	2a01:111:f403:ca04::1 2a01:111:f403:ca09:: 2a01:111:f403:ca09::3 2a01:111:f403:ca09::4 52.101.68.8 52.101.73.2 52.101.73.24 52.101.73.30	mail-db7pr03cu00401.inbound.protection.outlook.com mail-am3pr04cu00500.inbound.protection.outlook.com mail-am6pr04cu00303.inbound.protection.outlook.com mail-am0pr04cu00504.inbound.protection.outlook.com mail-du0pr03cu00100.inbound.protection.outlook.com mail-as9pr07cu00302.inbound.protection.outlook.com mail-as8pr05cu00300.inbound.protection.outlook.com mail-am7pr05cu00306.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 → 52.98.149.136

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 178ms

TXT Record
MS=ms92179480
v=spf1 ip4:87.52.110.20 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (by2mc.dk)
-all (hard fail)	v=spf1 ip4:87.52.110.20 include:spf.protection.outlook.com -all

📨 DMARC#

Policy	Record (_dmarc.by2mc.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:merete@by2mc.dk; aspf=s;

📬 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 2026-10-07 21:31:23

www	NXDOMAIN
www vs bare domain	Neither resolves by2mc.dk: no address www.by2mc.dk: no address
Wildcard	No
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

2 found

Selector	CNAME	Key
selector1	selector1-by2mc-dk._domainkey.by2mc.n-v1.dkim.mail.microsoft	RSA · ~2048 bit
selector2	selector2-by2mc-dk._domainkey.by2mc.n-v1.dkim.mail.microsoft	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: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

79ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	resolution failed: ncache nxrrset

🏷️ SOA#

51ms

Field	Value
Serial	2026031302
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 2026-10-20 20:37:27

Field	Value
Registrar	CURANET A/S
Registered	2019-03-27
Expires	2027-03-31 (161d)

🔗 Same registrant#

13 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

Domain	Registrar
biblioteketthy.dk	Punktum dk A/S (direct)
bilstumper.dk	Punktum dk A/S (direct)
kontingent.dk	CURANET A/S
lodseddel.dk	Punktum dk A/S (direct)
nordthyhealth.dk	Punktum dk A/S (direct)
opensign.dk	CURANET A/S
oxen.dk	Punktum dk A/S (direct)
pbox.dk	Punktum dk A/S (direct)
piccoline.dk	Punktum dk A/S (direct)
priime.dk	Punktum dk A/S (direct)
printserver.dk	Punktum dk A/S (direct)
revikon.dk	Punktum dk A/S (direct)
thegreenoak.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

45ms

98ms

101ms

AAAA

43ms

TXT

178ms

CAA

98ms

HTTPS

98ms

TLSA

566ms

SOA

51ms

MTA-STS

47ms

DNSSEC

79ms

SRV

124ms

Total

982ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-07 21:31:23	1489ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-28 09:03:23	1222ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-26 17:56:27	1208ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-20 14:54:30	550ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-20 08:56:32 shown	982ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-16 18:12:48	1853ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-16 18:12:31	3337ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-16 18:04:05	672ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-16 18:00:11	680ms	2 NS 0 A 1 MX	🔒 Secure