bykreiler.dk

📜 Historical scan 2026-07-29 21:56:38 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

bykreiler.dk is a .dk domain served by 2 nameservers (amber.ns.cloudflare.com, roan.ns.cloudflare.com). It was registered on 16 August 2016 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.43.128 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by bykreiler-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a DMARC policy and is reachable over IPv6. 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 32ms

Nameserver	IP addresses	PTR	ASN / ISP
amber.ns.cloudflare.com	108.162.192.64 172.64.32.64 173.245.58.64 2606:4700:50::adf5:3a40 2803:f800:50::6ca2:c040 2a06:98c1:50::ac40:2040	amber.ns.cloudflare.com amber.ns.cloudflare.com amber.ns.cloudflare.com amber.ns.cloudflare.com amber.ns.cloudflare.com amber.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
roan.ns.cloudflare.com	108.162.193.226 172.64.33.226 173.245.59.226 2606:4700:58::adf5:3be2 2803:f800:50::6ca2:c1e2 2a06:98c1:50::ac40:21e2	roan.ns.cloudflare.com roan.ns.cloudflare.com roan.ns.cloudflare.com roan.ns.cloudflare.com roan.ns.cloudflare.com roan.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 33ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.43.128	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.179.136	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 32ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	bykreiler-dk.mail.protection.outlook.com	2a01:111:f403:ca04::c 2a01:111:f403:ca04::e 2a01:111:f403:ca09::1 2a01:111:f403:ca09::b 52.101.68.32 52.101.68.5 52.101.73.12 52.101.73.22	mail-db9pr02cu00204.inbound.protection.outlook.com mail-db8pr02cu00106.inbound.protection.outlook.com mail-as9pr07cu00301.inbound.protection.outlook.com mail-am7pr05cu00103.inbound.protection.outlook.com mail-db3pr0202cu00200.inbound.protection.outlook.com mail-du2pr03cu00105.inbound.protection.outlook.com mail-am4pr0401cu00104.inbound.protection.outlook.com mail-am7pr05cu00106.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 → 40.104.116.24

🔷 AAAA Records (IPv6)#

2 records 32ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3030::ac43:b388	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::6815:2b80	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 32ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.43.128,172.67.179.136 ech=AEX+DQBBjAAgACDSQXtn1K5PfsZaRfUwm2ZsEnVCKypvBSk/2F6wrJ9GZgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::ac43:b388,2606:4700:3037::6815:2b80

🔌 SRV Records#

1 records 88ms

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

📝 TXT Records#

3 records 185ms

TXT Record
mandrill_verify.3J82Ro_7JB8KDP-aBaK-Qg
MS=ms72653822
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

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

📨 DMARC#

Policy	Record (_dmarc.bykreiler.dk)
p=reject	v=DMARC1; p=reject; sp=reject; rua=mailto:3204db3c2d594ac8865d11d066397a9e@dmarc-reports.cloudflare.net

📬 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 2026-10-03 09:30:09

www	Address record (no CNAME)
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#

1 found

Selector	CNAME	Key
selector1	selector1-bykreiler-dk._domainkey.kreiler.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: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

2044ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2410670473
Primary NS (MNAME)	amber.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-15 10:00:22

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2016-08-16
Expires	2027-08-31 (311d)

🔗 Same registrant#

0 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).

No other domain with this registrant in our WHOIS data yet

📋 WHOIS#

⏱️ Lookup Timing#

32ms

33ms

32ms

AAAA

32ms

TXT

185ms

CAA

30ms

HTTPS

32ms

TLSA

1029ms

SOA

0ms

MTA-STS

47ms

DNSSEC

2044ms

SRV

88ms

Total

4105ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-03 09:30:09	2012ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-27 08:13:55	1132ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-26 07:58:29	1178ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-24 07:46:51	904ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-08 20:36:47	2171ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-16 12:41:30	9509ms	2 NS 2 A 1 MX	🔒 Secure
2026-07-29 21:56:38 shown	4105ms	2 NS 2 A 1 MX	🔒 Secure
2026-07-23 19:07:29	1528ms	2 NS 2 A 1 MX	🔒 Secure
2026-07-20 22:47:52	2374ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-28 16:35:00	904ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-24 21:04:47	6715ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-21 20:32:45	1184ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-16 18:26:48	859ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-16 18:20:58	1884ms	2 NS 2 A 1 MX	🔒 Secure