3xbyg.dk

📜 Historical scan 2026-10-04 02:43:13 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

3xbyg.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 11 March 2019 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 76.76.21.21 is hosted by Amazon.com, Inc. (AS16509) in United States. Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 3 more. The zone is not DNSSEC-signed, 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#

3 records 27ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	2a02:2339:1:15c::4562:4562 91.197.248.78	ns1.simply.com ns1.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.simply.com	185.25.141.15 2a02:2339:4006:101::4562:4562	ns2.simply.com ns2.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns3.simply.com	91.197.248.79	ns3.simply.com	AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 34ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
76.76.21.21	3600s	—	AS16509	Amazon.com, Inc.	76.76.21.0/24	🇺🇸 United States	Walnut

📧 MX Records#

5 records 29ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	aspmx.l.google.com	2a00:1450:4010:c05::1b 2a00:1450:4010:c05::1b 64.233.164.27	li-in-f27.1e100.net li-in-x1b.1e100.net lf-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
20	3600s	alt1.aspmx.l.google.com	192.178.158.27 2404:6800:4013:813::1a	lcdels-in-f27.1e100.net lcdels-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
20	3600s	alt2.aspmx.l.google.com	173.194.41.27 173.194.41.27 2404:6800:4001:c01::1b	mad01s14-in-f27.1e100.net yukulwh-in-f27.1e100.net yukulwh-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
30	3600s	alt3.aspmx.l.google.com	172.253.158.27 2404:6800:4003:c26::1b	so-in-f27.1e100.net so-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
30	3600s	alt4.aspmx.l.google.com	108.177.125.27 2404:6800:4008:c01::1b	tp-in-f27.1e100.net tp-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

3 records 124ms

TXT Record
google-site-verification=_q_ctwaOz8K5vV44LSvuTsqrLs6UCddamVF-Y8DHBZY
google-site-verification=JimhAgSn9wTfkoEVuqhgfBTlU-KoYhziT0s_K6gkpL0
v=spf1 a mx ip4:202.61.199.32 include:relay.mailbaby.net ip6:2a03:4000:59:159:a4d6:eeff:febe:34c6 include:_spf.google.com ~all

✉️ SPF#

Policy	Record (3xbyg.dk)
~all (soft fail)	v=spf1 a mx ip4:202.61.199.32 include:relay.mailbaby.net ip6:2a03:4000:59:159:a4d6:eeff:febe:34c6 include:_spf.google.com ~all

📨 DMARC#

Policy	Record (_dmarc.3xbyg.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:dmarc@n4uecdqr.uriports.com; pct=100; adkim=s; aspf=s

📬 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 2026-10-12 20:04:14

www CNAME	3xbyg.dk (all on 3xbyg.dk) → 76.76.21.21 (AS16509)
www vs bare domain	Same network 3xbyg.dk: 76.76.21.21 (AS16509) www.3xbyg.dk: 76.76.21.21 (AS16509)
Wildcard	No
Denial of existence	NSEC zone can be walked (all names enumerable)
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
google	—	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: 6/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

85ms

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

🏷️ SOA#

43ms

Field	Value
Serial	2026100300
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-04 03:15:16

Field	Value
Registrar	Simply.com A/S
Registered	2019-03-11
Expires	2027-03-31 (159d)

📋 WHOIS#

⏱️ Lookup Timing#

27ms

34ms

29ms

AAAA

32ms

TXT

124ms

CAA

33ms

HTTPS

42ms

TLSA

134ms

SOA

43ms

MTA-STS

102ms

DNSSEC

85ms

SRV

46ms

Total

726ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-12 20:04:14	740ms	3 NS 1 A 5 MX	🔓 Insecure
2026-10-04 02:43:13 shown	726ms	3 NS 1 A 5 MX	🔓 Insecure
2026-06-22 20:33:49	2657ms	3 NS 1 A 5 MX	🔓 Insecure
2026-06-16 12:54:15	3880ms	3 NS 1 A 5 MX	🔓 Insecure