arrowsikkerhetskurs.dk

📜 Historical scan 2026-08-15 11:25:43 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

arrowsikkerhetskurs.dk is a .dk domain served by 4 nameservers (pdns77.ultradns.biz, pdns77.ultradns.com, pdns77.ultradns.net and 1 more). It was registered on 30 October 2017 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 52.234.0.82 is hosted by Microsoft Corporation (AS8075) in United States. Mail is handled by .. 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#

4 records 58ms

Nameserver	IP addresses	PTR	ASN / ISP
pdns77.ultradns.biz	156.154.66.77 2610:a1:1015::71	pdns77.ultradns.biz pdns77.ultradns.biz	AS12008 Vercara, LLC AS12008 Vercara, LLC
pdns77.ultradns.com	156.154.64.77 2001:502:f3ff::71	pdns77.ultradns.com pdns77.ultradns.com	AS12008 Vercara, LLC AS12008 Vercara, LLC
pdns77.ultradns.net	156.154.65.77 2610:a1:1014::71	pdns77.ultradns.net pdns77.ultradns.net	AS12008 Vercara, LLC AS12008 Vercara, LLC
pdns77.ultradns.org	156.154.67.77 2001:502:4612::71	pdns77.ultradns.org pdns77.ultradns.org	AS12008 Vercara, LLC AS12008 Vercara, LLC

🌍 A Records#

1 records 64ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
52.234.0.82	809s	—	AS8075	Microsoft Corporation	52.224.0.0/11	🇺🇸 United States	San Jose

📧 MX Records#

1 records 85ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	86400s	. Null MX — domain accepts no email (RFC 7505)

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 317ms

TXT Record
v=spf1 -all

✉️ SPF#

Policy	Record (arrowsikkerhetskurs.dk)
-all (hard fail)	v=spf1 -all

📨 DMARC#

Policy	Record (_dmarc.arrowsikkerhetskurs.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:rywdzx3h@ag.dmarcian.com

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT#

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records#

1 records 88ms

Flags	Tag	Value
0	issue	;

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-10 07:11:31

www CNAME	mrktg.arwdns.com (all on arwdns.com) → 52.234.0.82 (AS8075)
www vs bare domain	Same network arrowsikkerhetskurs.dk: 52.234.0.82 (AS8075) www.arrowsikkerhetskurs.dk: 52.234.0.82 (AS8075)
Wildcard	No

🔎 SPF check#

zone-wide SPF report

DNS lookups: 0/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

130ms

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

🏷️ SOA#

84ms

Field	Value
Serial	2017093399
Primary NS (MNAME)	pdns77.ultradns.com
Responsible (RNAME)	domadmin@arrow.com
Refresh	43200s
Retry	7200s
Expire	1209600s
Minimum (neg-cache TTL)	86400s

📋 Registration#

WHOIS fetched 2026-09-06 00:39:47

Field	Value
Registrar	MarkMonitor Inc.
Registered	2017-10-30
Expires	2026-10-31 (14d)

📋 WHOIS#

⏱️ Lookup Timing#

58ms

64ms

85ms

AAAA

79ms

TXT

317ms

CAA

88ms

HTTPS

60ms

TLSA

78ms

SOA

84ms

MTA-STS

100ms

DNSSEC

130ms

SRV

100ms

Total

1054ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-10 07:11:31	538ms	4 NS 1 A 1 MX	🔓 Insecure
2026-10-02 15:48:54	751ms	4 NS 1 A 1 MX	🔓 Insecure
2026-09-30 15:28:27	566ms	4 NS 1 A 1 MX	🔓 Insecure
2026-09-25 10:27:52	648ms	4 NS 1 A 1 MX	🔓 Insecure
2026-09-24 10:25:02	2446ms	4 NS 1 A 1 MX	🔓 Insecure
2026-09-19 13:50:57	2909ms	4 NS 1 A 1 MX	🔓 Insecure
2026-09-13 13:45:01	844ms	4 NS 1 A 1 MX	🔓 Insecure
2026-09-06 00:39:24	595ms	4 NS 1 A 1 MX	🔓 Insecure
2026-08-27 11:29:17	581ms	4 NS 1 A 1 MX	🔓 Insecure
2026-08-26 11:07:27	750ms	4 NS 1 A 1 MX	🔓 Insecure
2026-08-25 20:22:40	688ms	4 NS 1 A 1 MX	🔓 Insecure
2026-08-22 15:40:06	1345ms	4 NS 1 A 1 MX	🔓 Insecure
2026-08-21 15:31:30	5437ms	4 NS 1 A 1 MX	🔓 Insecure
2026-08-20 15:26:59	24990ms	4 NS 1 A 1 MX	❓ Unknown
2026-08-18 03:52:44	996ms	4 NS 1 A 1 MX	🔓 Insecure
2026-08-16 13:32:27	2943ms	4 NS 1 A 1 MX	🔓 Insecure
2026-08-15 11:25:43 shown	1054ms	4 NS 1 A 1 MX	🔓 Insecure
2026-08-14 06:16:01	997ms	4 NS 1 A 1 MX	🔓 Insecure
2026-08-06 18:46:48	911ms	4 NS 1 A 1 MX	🔓 Insecure
2026-08-03 22:02:25	9702ms	4 NS 1 A 1 MX	🔓 Insecure
2026-07-29 20:27:56	1386ms	4 NS 1 A 1 MX	🔓 Insecure
2026-07-28 04:17:09	875ms	4 NS 1 A 1 MX	🔓 Insecure
2026-07-27 04:14:48	2661ms	4 NS 1 A 1 MX	🔓 Insecure
2026-07-26 03:52:06	3187ms	4 NS 1 A 1 MX	🔓 Insecure
2026-07-25 03:13:44	17202ms	4 NS 1 A 1 MX	🔓 Insecure