byd.dk

Records from scan: 2026-10-02 22:39:21 · 3415ms total · last checked 2026-10-18 22:10 (unchanged)

⬇ 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 our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 208ms

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 122ms

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 223ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	1800s	byd-dk.mail.protection.outlook.com	2a01:111:f403:ca09::24 2a01:111:f403:ca09::26 2a01:111:f403:ca3c::a 2a01:111:f403:ca48::8 52.101.103.36 52.101.185.21 52.101.68.10 52.101.73.155	mail-am6pr02cu00204.inbound.protection.outlook.com mail-am8pr83cu00106.inbound.protection.outlook.com mail-zrxpr07cu00102.inbound.protection.outlook.com mail-miypr02cu00100.inbound.protection.outlook.com mail-miypr05cu00104.inbound.protection.outlook.com mail-zrxpr05cu00105.inbound.protection.outlook.com mail-dbbpr03cu00102.inbound.protection.outlook.com mail-am7pr02cu00203.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 → 52.98.154.136
🔶 Autoconfig	104.21.19.20

🔷 AAAA Records (IPv6)#

2 records 95ms

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 197ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.19.20,172.67.184.120 ech=AEX+DQBBdgAgACDArvUAQgkn5Am9lx7BsX0BUDXVBQC0RmfQAI531D/UNQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::ac43:b878,2606:4700:3034::6815:1314

📝 TXT Records#

3 records 389ms

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#

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

🔗 TLSA / DANE#

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

🔐 DNSSEC#

259ms

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

🏷️ SOA#

112ms

Field	Value
Serial	2416398748
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#

208ms

122ms

223ms

AAAA

95ms

TXT

389ms

CAA

221ms

HTTPS

197ms

TLSA

1204ms

SOA

112ms

MTA-STS

150ms

DNSSEC

259ms

SRV

348ms

Total

3415ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-02 22:39:21 shown	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	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