steffca.dk

📜 Historical scan 2026-09-28 05:35:50 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

steffca.dk is a .dk domain served by 2 nameservers (donald.ns.cloudflare.com, peaches.ns.cloudflare.com). It was registered on 27 April 1999 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 52.236.128.45 is hosted by Microsoft Corporation (AS8075) in The Netherlands. Mail is handled by steffca-dk.l-v1.mx.microsoft. 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 33ms

Nameserver	IP addresses	PTR	ASN / ISP
donald.ns.cloudflare.com	108.162.193.158 172.64.33.158 173.245.59.158 2606:4700:58::adf5:3b9e 2803:f800:50::6ca2:c19e 2a06:98c1:50::ac40:219e	donald.ns.cloudflare.com donald.ns.cloudflare.com donald.ns.cloudflare.com donald.ns.cloudflare.com donald.ns.cloudflare.com donald.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
peaches.ns.cloudflare.com	108.162.194.239 162.159.38.239 172.64.34.239 2606:4700:50::a29f:26ef 2803:f800:50::6ca2:c2ef 2a06:98c1:50::ac40:22ef	peaches.ns.cloudflare.com peaches.ns.cloudflare.com peaches.ns.cloudflare.com peaches.ns.cloudflare.com peaches.ns.cloudflare.com peaches.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

1 records 32ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
52.236.128.45	300s	—	AS8075	Microsoft Corporation	52.224.0.0/11	🇳🇱 The Netherlands	Amsterdam

📧 MX Records#

1 records 36ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	60s	steffca-dk.l-v1.mx.microsoft	2a01:111:f403:c967::c 2a01:111:f403:ca04::10 2a01:111:f403:ca04::c 2a01:111:f403:ca09::26 52.101.185.21 52.101.185.24 52.101.73.145 52.101.91.156	mail-cpjpr05cu00204.inbound.protection.outlook.com mail-dbapr03cu00100.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-am8pr83cu00106.inbound.protection.outlook.com mail-zrxpr05cu00105.inbound.protection.outlook.com mail-zrxpr07cu00100.inbound.protection.outlook.com mail-am6pr02cu00301.inbound.protection.outlook.com mail-maspr04cu00104.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

🔌 SRV Records#

1 records 65ms

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

📝 TXT Records#

2 records 209ms

TXT Record
MS=ms33543641
v=spf1 ip4:212.98.75.138 ip4:80.208.1.246 include:spf.protection.outlook.com include:spfrerouting.xink.io ~all

✉️ SPF#

Policy	Record (steffca.dk)
~all (soft fail)	v=spf1 ip4:212.98.75.138 ip4:80.208.1.246 include:spf.protection.outlook.com include:spfrerouting.xink.io ~all

📨 DMARC#

Policy	Record (_dmarc.steffca.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:2c6423c6@in.mailhardener.com

📬 MTA-STS#

260ms

Check	Result
Status	🔒 Enforce
TXT record (_mta-sts)	✓ Found
HTTPS policy	✓ Valid
Mode	enforce
Policy ID	20190601000000Z
max_age	604800s
Policy MX	steffca-dk.l-v1.mx.microsoft

📈 TLSRPT#

Status	Report address (rua)
✓ Enabled	mailto:tlsrpt@in.mailhardener.com

📜 CAA Records#

✗ No CAA records — any CA may issue certificates

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-12 05:56:24

www	52.236.128.45 (AS8075) (address records, no CNAME)
www vs bare domain	Same network steffca.dk: 52.236.128.45 (AS8075) www.steffca.dk: 52.236.128.45 (AS8075)
Wildcard	No
Denial of existence	Compact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

✍️ DKIM keys#

2 found

Selector	CNAME	Key
s1	s1.domainkey.u10245761.wl012.sendgrid.net	RSA · ~2048 bit
s2	s2.domainkey.u10245761.wl012.sendgrid.net	RSA · ~1024 bit below 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: 2/10 · policy: ~all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.steffca.dk	VVjIPPUinA1BgoydotOmkq7Ct9RpAdTQ-c-8pUQiDo4
TXT	_acme-challenge.steffca.dk	z9bjeO6y9zQ-Uz4xAzN7hXsnZBbFr1cpY8izezh3jnY

🔗 TLSA / DANE#

4 records 101ms

Service / Owner	Type	Cert association
SMTP _25._tcp.steffca-dk.l-v1.mx.microsoft	DANE-TA · Full cert · SHA-256	EA7A25255D111FC3CE4CB8FABE3ADF9C…
SMTP _25._tcp.steffca-dk.l-v1.mx.microsoft	DANE-EE · SPKI · SHA-256	803F7447CC75B208DBCA042346F5D8DF…
SMTP _25._tcp.steffca-dk.l-v1.mx.microsoft	DANE-TA · Full cert · SHA-256	C1AD7778796D20BCA65C889A26550211…
SMTP _25._tcp.steffca-dk.l-v1.mx.microsoft	DANE-EE · SPKI · SHA-256	54883CC5F1849331E6BF5002C3129D20…

🔐 DNSSEC#

104ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2416049439
Primary NS (MNAME)	donald.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-10 04:16:34

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1999-04-27
Expires	2027-06-30 (255d)

📋 WHOIS#

⏱️ Lookup Timing#

33ms

32ms

36ms

AAAA

32ms

TXT

209ms

CAA

37ms

HTTPS

35ms

TLSA

101ms

SOA

0ms

MTA-STS

260ms

DNSSEC

104ms

SRV

65ms

Total

894ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-12 05:56:23	2213ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-10 03:57:20	3834ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-29 22:08:53	697ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-29 05:49:24	944ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-28 05:35:50 shown	894ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-19 23:14:58	1867ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-22 14:05:53	9427ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-18 02:05:39	7638ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-03 03:47:14	1334ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-05 18:17:37	49809ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-26 12:36:14	1564ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-24 00:46:03	900ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-22 23:48:27	906ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-18 03:12:33	1082ms	2 NS 1 A 1 MX	🔒 Secure