sefibo.dk

📜 Historical scan 2026-10-03 22:46:53 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

sefibo.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 9 April 2026 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 216.150.1.1 is hosted by Amazon.com, Inc. (AS16509) in United States. Mail is handled by mx1.mymangomail.com. The zone is DNSSEC-signed and validates, 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 46ms

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
216.150.1.1	3600s	—	AS16509	Amazon.com, Inc.	216.150.1.0/24	🇺🇸 United States	—

📧 MX Records#

1 records 45ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	mx1.mymangomail.com	159.195.235.142	v2202609418528520539.luckysrv.de	AS214996 netcup GmbH

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.mymangomail.com → 159.195.235.142
🔶 Autoconfig	autoconfig.mymangomail.com → 159.195.235.142

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

3 records 115ms

TXT Record
google-site-verification=8GSDyoPQ-02Vxur_edZB8mPZzVNUtjEYzgHZ8c4-11M
mail-host-verify=a51da42
v=spf1 include:spf.mymangomail.com -all

✉️ SPF#

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

📨 DMARC#

Policy	Record (_dmarc.sefibo.dk)
p=quarantine	v=DMARC1; p=quarantine;

📬 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 2026-10-13 06:50:43

www CNAME	97c4f1991919bb6b.vercel-dns-016.com (all on vercel-dns-016.com) → 216.150.1.193 216.150.16.193 (AS16509)
www vs bare domain	Same network sefibo.dk: 216.150.1.1 (AS16509) www.sefibo.dk: 216.150.1.193 216.150.16.193 (AS16509)
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#

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

🔐 DNSSEC#

117ms

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

🏷️ SOA#

45ms

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 2026-10-08 08:03:24

Field	Value
Registrar	Simply.com A/S
Registered	2026-04-09
Expires	2027-04-08 (171d)

📋 WHOIS#

⏱️ Lookup Timing#

46ms

34ms

45ms

AAAA

45ms

TXT

115ms

CAA

55ms

HTTPS

32ms

TLSA

65ms

SOA

45ms

MTA-STS

52ms

DNSSEC

117ms

SRV

60ms

Total

629ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-13 06:50:43	1081ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-03 22:46:53 shown	629ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-24 21:11:24	487ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-26 13:54:24	1356ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-17 13:56:43	1644ms	3 NS 1 A 1 MX	🔒 Secure