bycv.dk

📜 Historical scan 2026-09-30 12:08:28 · ← Latest scan

bycv.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 28 March 2021 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.20.205.50 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by mx.simply.com. The zone is of unknown DNSSEC status, 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 41ms

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 44ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.20.205.50	3600s	linux376.unoeuro.com	AS48854	team.blue Denmark A/S	185.20.204.0/22	🇩🇰 Denmark	—

📧 MX Records

1 records 46ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	mx.simply.com	94.231.106.20	mx.simply.com	AS48854 team.blue Denmark A/S

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	185.20.205.50
🔶 Autoconfig	maildiscover.simply.com → 94.231.108.222

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records

1 records 66ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	10	10	443	maildiscover.simply.com

📝 TXT Records

1 records 135ms

TXT Record
v=spf1 include:spf.simply.com -all

✉️ SPF

Policy	Record (bycv.dk)
-all (hard fail)	v=spf1 include:spf.simply.com -all

📨 DMARC

Policy	Record (_dmarc.bycv.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:dmarc@robot.simply.com; ruf=mailto:dmarc@robot.simply.com;

📬 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 2026-10-02 12:11:50

www	Address record (no CNAME)
Wildcard	Yes: any name under the zone resolves
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

🔎 SPF check

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE

3 records 116ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx.simply.com	DANE-EE · SPKI · SHA-256	97A3BA009F39C761BFFB6574340E8138…
SMTP _25._tcp.mx.simply.com	DANE-EE · SPKI · SHA-256	A9D603AF4D7ED6B9246B4B68500CD6F2…
SMTP _25._tcp.mx.simply.com	DANE-EE · SPKI · SHA-256	4B949F05A63FED95FC94B3A83DD70167…

🔐 DNSSEC

83ms

Check	Result
Validation Status	❓ Unknown
AD Flag (resolver validates)	✗ Not set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	broken trust chain resolving 'bycv.dk/A/IN': 127.0.0.1#53

🏷️ SOA

46ms

Field	Value
Serial	2026022001
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 2026-10-02 15:23:43

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2021-03-28
Expires	2027-03-31 (179d)

📋 WHOIS

⏱️ Lookup Timing

41ms

44ms

46ms

AAAA

40ms

TXT

135ms

CAA

34ms

HTTPS

44ms

TLSA

116ms

SOA

46ms

MTA-STS

60ms

DNSSEC

83ms

SRV

66ms

Total

550ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-10-02 12:11:50	419ms	3 NS 1 A 1 MX	❓ Unknown
2026-10-01 12:10:19	899ms	4 NS 0 A 0 MX	⚠️ Bogus
2026-09-30 12:08:28 shown	550ms	3 NS 1 A 1 MX	❓ Unknown
2026-09-30 08:05:53	2461ms	4 NS 0 A 0 MX	⚠️ Bogus
2026-09-29 07:53:42	1620ms	4 NS 0 A 0 MX	⚠️ Bogus
2026-09-28 07:08:20	699ms	4 NS 0 A 0 MX	⚠️ Bogus
2026-09-27 06:48:19	708ms	4 NS 0 A 0 MX	⚠️ Bogus
2026-09-26 06:38:26	668ms	4 NS 0 A 0 MX	⚠️ Bogus
2026-09-25 06:13:22	497ms	3 NS 1 A 1 MX	❓ Unknown
2026-09-25 02:21:28	779ms	4 NS 0 A 0 MX	⚠️ Bogus
2026-09-24 01:20:35	903ms	4 NS 0 A 0 MX	⚠️ Bogus
2026-09-19 17:22:36	1498ms	4 NS 0 A 0 MX	⚠️ Bogus
2026-09-12 16:02:19	817ms	4 NS 0 A 0 MX	⚠️ Bogus
2026-09-11 14:11:52	1713ms	4 NS 0 A 0 MX	⚠️ Bogus
2026-09-04 10:31:57	624ms	4 NS 0 A 0 MX	⚠️ Bogus
2026-08-31 14:54:59	2510ms	4 NS 0 A 0 MX	⚠️ Bogus
2026-08-30 13:53:16	2702ms	4 NS 0 A 0 MX	⚠️ Bogus
2026-08-29 01:40:37	643ms	4 NS 0 A 0 MX	⚠️ Bogus
2026-08-27 21:04:00	798ms	4 NS 0 A 0 MX	⚠️ Bogus
2026-08-26 20:36:07	613ms	3 NS 1 A 1 MX	❓ Unknown
2026-08-26 04:11:50	1461ms	4 NS 0 A 0 MX	⚠️ Bogus
2026-07-03 18:23:59	641ms	4 NS 0 A 0 MX	⚠️ Bogus
2026-07-02 12:31:10	612ms	3 NS 1 A 1 MX	❓ Unknown
2026-06-27 01:29:45	562ms	3 NS 1 A 1 MX	❓ Unknown
2026-06-21 11:04:32	1740ms	0 NS 0 A 0 MX	⚠️ Bogus