c-byg.dk

Records from scan: 2026-10-02 06:53:08 · 2079ms total · last checked 2026-10-16 15:44 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

c-byg.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 6 January 2022 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 46.30.213.37 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 3 more. The zone is DNSSEC-signed and validates, has no 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 81ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records#

1 records 118ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.30.213.37	3600s	webcluster2.webpod12-cph3.one.com	AS51468	One.com A/S	46.30.208.0/21	🇩🇰 Denmark	Copenhagen

📧 MX Records#

5 records 113ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	3600s	aspmx.l.google.com	142.251.127.26 2a00:1450:4001:c21::1a	lcfrai-in-f26.1e100.net lcfrai-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	3600s	alt1.aspmx.l.google.com	142.250.147.27 2a00:1450:4025:c01::1b	rd-in-f27.1e100.net rd-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	3600s	alt2.aspmx.l.google.com	172.253.152.27 2a00:1450:4010:c22::1b	yulpptr-in-f27.1e100.net yulpptr-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	3600s	alt3.aspmx.l.google.com	192.178.211.27 2404:6800:4000:1025::1a	lcbomp-in-f27.1e100.net lcbomp-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	3600s	alt4.aspmx.l.google.com	192.178.158.27 2404:6800:4013:813::1b	lcdels-in-f27.1e100.net lcdels-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC

🔷 AAAA Records (IPv6)#

1 records 156ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a02:2350:5:10a:802b:cc62:9acf:c9fa	3600s	—	AS51468	One.com A/S	2a02:2350:0:0:0:0:0:0/32	🇩🇰 Denmark	Copenhagen

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

3 records 380ms

TXT Record
google-site-verification=-UVUP3M_SGYcdjZ284UJzLp054VI5FAC6MSsHrh6SLw
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArXcKP41VeNBmDKegSlFUWkdlnbkCib6M+7zqYyyjeQEbsL/ZjLAXMiOlGe4T0C+eVoXoH6vag5tEsfOCicms3zF2UCxlR9e5pzRr8bD/X/a8skIg7HH+TliOOPxnPm3cRgnJZiX4tw7GAX3DR6XO6cVW5i97EXBe7OEgf7upjbYQzjh+eXq7zx05gLpA5jc1Lr8oCctgpnUJmEDpsvEnkHh9xp6frEb+UMLhoAh5aM5xWjE2hThJLf2s9hs6vBze9/kEVVx/ZDsyNQU5s3rYvm0e4ag/WahY54GDvKdhYU5OLmiub2xQmTSUFAGR+8IJeTZ2ilCt2aVyT4jm1mZ8EwIDAQAB
v=spf1 include:_spf.google.com ~all

✉️ SPF#

Policy	Record (c-byg.dk)
~all (soft fail)	v=spf1 include:_spf.google.com ~all

📨 DMARC#

✗ No DMARC record — mail spoofing not restricted

📬 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 2026-10-16 15:44:48

www	46.30.213.37 2a02:2350:5:10a:802b:cc62:9acf:c9fa (AS51468) (address records, no CNAME)
www vs bare domain	Same network c-byg.dk: 46.30.213.37 2a02:2350:5:10a:802b:cc62:9acf:c9fa (AS51468) www.c-byg.dk: 46.30.213.37 2a02:2350:5:10a:802b:cc62:9acf:c9fa (AS51468)
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 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#

273ms

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

🏷️ SOA#

95ms

Field	Value
Serial	2026100101
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

WHOIS fetched 2026-10-02 07:12:03

Field	Value
Registrar	ONE.COM A/S
Registered	2022-01-06
Expires	2027-01-05 (80d)

📋 WHOIS#

⏱️ Lookup Timing#

81ms

118ms

113ms

AAAA

156ms

TXT

380ms

CAA

141ms

HTTPS

133ms

TLSA

606ms

SOA

95ms

MTA-STS

167ms

DNSSEC

273ms

SRV

146ms

Total

2079ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-02 06:53:08 shown	2079ms	2 NS 1 A 5 MX	🔒 Secure
2026-09-25 05:15:27	820ms	2 NS 1 A 5 MX	🔒 Secure
2026-09-06 23:51:35	1106ms	2 NS 1 A 5 MX	🔒 Secure
2026-08-27 21:30:28	1743ms	2 NS 1 A 5 MX	🔒 Secure
2026-08-26 11:10:22	787ms	2 NS 1 A 5 MX	🔒 Secure
2026-08-17 13:26:02	5255ms	2 NS 1 A 5 MX	🔒 Secure
2026-08-01 22:54:28	9110ms	2 NS 1 A 5 MX	🔒 Secure
2026-07-01 21:38:59	3009ms	2 NS 1 A 5 MX	🔒 Secure
2026-06-28 05:33:37	1309ms	2 NS 1 A 5 MX	🔒 Secure
2026-06-27 18:01:42	1024ms	2 NS 1 A 5 MX	🔒 Secure
2026-06-16 18:47:53	648ms	2 NS 1 A 5 MX	🔒 Secure
2026-06-16 18:40:56	718ms	2 NS 1 A 5 MX	🔒 Secure