byd.dk

📜 Historical scan 2026-09-15 13:29:20 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

byd.dk is a .dk domain served by 2 nameservers (elsa.ns.cloudflare.com, roan.ns.cloudflare.com). It was registered on 2 September 1998 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.19.20 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by byd-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, 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 137ms

Nameserver	IP addresses	PTR	ASN / ISP
elsa.ns.cloudflare.com	108.162.192.111 172.64.32.111 173.245.58.111 2606:4700:50::adf5:3a6f 2803:f800:50::6ca2:c06f 2a06:98c1:50::ac40:206f	elsa.ns.cloudflare.com elsa.ns.cloudflare.com elsa.ns.cloudflare.com elsa.ns.cloudflare.com elsa.ns.cloudflare.com elsa.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 114ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.19.20	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.184.120	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 132ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	1800s	byd-dk.mail.protection.outlook.com	2a01:111:f403:ca04::f 2a01:111:f403:ca21::e 2a01:111:f403:ca48::10 2a01:111:f403:ca48::c 52.101.103.36 52.101.209.153 52.101.91.156 52.101.91.162	mail-db7pr03cu00507.inbound.protection.outlook.com mail-matpr04cu00306.inbound.protection.outlook.com mail-miypr05cu00100.inbound.protection.outlook.com mail-miypr03cu00104.inbound.protection.outlook.com mail-miypr05cu00104.inbound.protection.outlook.com mail-cpjpr04cu00101.inbound.protection.outlook.com mail-maspr04cu00104.inbound.protection.outlook.com mail-matpr04cu00302.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 → 52.98.252.88
🔶 Autoconfig	172.67.184.120

🔷 AAAA Records (IPv6)#

2 records 108ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3030::ac43:b878	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3034::6815:1314	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 117ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.19.20,172.67.184.120 ech=AEX+DQBBqAAgACAkFE1XkdQx7Qnm8NoFStJVvNFRyfoNYla+mU1Ul8H6cQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::ac43:b878,2606:4700:3034::6815:1314

📝 TXT Records#

3 records 291ms

TXT Record
JevS2Gprz0/He6Tzy84x9u+KjXNmAlXNunpKYKHSJfYbBBJQF+JawPAhYxk/8HHy7D2F+fI34G2woJi14jYGbg==
MS=ms62217701
v=spf1 include:spf.zitcom.dk include:customerspf.sitecore.net include:musvc.com include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (byd.dk)
-all (hard fail)	v=spf1 include:spf.zitcom.dk include:customerspf.sitecore.net include:musvc.com include:spf.protection.outlook.com -all

📨 DMARC#

Policy	Record (_dmarc.byd.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:633c00dc7e5f7@dmarc.centerasecurity.com; ruf=mailto:dmarcforensics@nc.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 2026-10-11 11:06:14

www	104.21.19.20 172.67.184.120 2606:4700:3030::ac43:b878 2606:4700:3034::6815:1314 (AS13335) (address records, no CNAME)
www vs bare domain	Same network byd.dk: 104.21.19.20 172.67.184.120 2606:4700:3030::ac43:b878 2606:4700:3034::6815:1314 (AS13335) www.byd.dk: 104.21.19.20 172.67.184.120 2606:4700:3030::ac43:b878 2606:4700:3034::6815:1314 (AS13335)
Wildcard	Yes: any name under the zone resolves
CDS / CDNSKEY	Delete signal: the zone asks the registry to remove its DS (go insecure) 1 CDS, 1 CDNSKEY

✍️ DKIM keys#

2 found

Selector	CNAME	Key
selector1	selector1-byd-dk._domainkey.ncgdk.onmicrosoft.com	RSA · ~1024 bit below 2048 bit
selector2	selector2-byd-dk._domainkey.ncgdk.onmicrosoft.com	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: 7/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.byd.dk	kqQVaKOiGkm9COHg0xXAseoe1nJjCohPWl_rdtQfCeA
TXT	_acme-challenge.byd.dk	v7KH5gEeMaOKYeE1QbepRaKyK7ZOYGz7SnO9OyN5MZI

🔗 TLSA / DANE#

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

🔐 DNSSEC#

202ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2414434563
Primary NS (MNAME)	elsa.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-01 22:59:44

Field	Value
Registrar	Eurodns S.A
Registered	1998-09-02
Expires	2027-09-30 (345d)

📋 WHOIS#

⏱️ Lookup Timing#

137ms

114ms

132ms

AAAA

108ms

TXT

291ms

CAA

104ms

HTTPS

117ms

TLSA

366ms

SOA

0ms

MTA-STS

115ms

DNSSEC

202ms

SRV

803ms

Total

2669ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-02 22:39:21	3415ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-01 22:36:49	1434ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-30 22:29:40	1731ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-26 21:34:37	1487ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-24 14:25:38	886ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-15 13:29:20 shown	2669ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-08 10:54:03	1342ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-05 16:48:28	1051ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-14 17:39:59	2759ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-09 02:32:41	1436ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-22 10:47:59	1426ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-28 15:00:47	1597ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-16 18:05:20	780ms	2 NS 2 A 1 MX	🔓 Insecure