arrowsikkerhetskurs.dk

📜 Historical scan 2026-08-18 03:52:44 · ← 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 71ms

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 51ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
52.234.0.82	900s	—	AS8075	Microsoft Corporation	52.224.0.0/11	🇺🇸 United States	San Jose

📧 MX Records#

1 records 54ms

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 311ms

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 47ms

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#

96ms

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

🏷️ SOA#

0ms

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 2026-10-16 21:25:22

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

🔗 Same registrant#

24 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

Domain	Registrar
2ndbite.dk	MarkMonitor Inc.
accessdemo.dk	CSC Digital Brand Service, Inc
arrow-ecs.dk	CSC Digital Brand Service, Inc
arrow.dk	MarkMonitor Inc.
arrowadvantage.dk	MarkMonitor Inc.
arrowasia.dk	MarkMonitor Inc.
arrowaviator.dk	CSC Digital Brand Service, Inc
arrowcloud.dk	MarkMonitor Inc.
arroweurope.dk	MarkMonitor Inc.
breakfast-arrowecs.dk	CSC Digital Brand Service, Inc
cloudsphereai.dk	MarkMonitor Inc.
comentor-computing.dk	CSC Digital Brand Service, Inc
demodays.dk	CSC Digital Brand Service, Inc
dns.dk	CSC Digital Brand Service, Inc
emcportal.dk	CSC Digital Brand Service, Inc
hds-fmserver.dk	MarkMonitor Inc.
hdsfmstorage.dk	MarkMonitor Inc.
inspirationdaydatacenter.dk	CSC Digital Brand Service, Inc
marketing-mgd.dk	CSC Digital Brand Service, Inc
securesoft-computerlinks.dk	MarkMonitor Inc.
securesoftcomputerlinks.dk	MarkMonitor Inc.
splar.dk	CSC Digital Brand Service, Inc
verical.dk	MarkMonitor Inc.
wyse.dk	CSC Digital Brand Service, Inc

📋 WHOIS#

⏱️ Lookup Timing#

71ms

51ms

54ms

AAAA

58ms

TXT

311ms

CAA

47ms

HTTPS

73ms

TLSA

74ms

SOA

0ms

MTA-STS

100ms

DNSSEC

96ms

SRV

104ms

Total

996ms

🕐 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 shown	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	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