arrowsikkerhetskurs.dk DNS records

🖥️ Nameservers4 records 43ms

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 Records1 records 44ms

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 Records1 records 37ms

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 Records1 records 216ms

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 Records1 records 36ms

Flags	Tag	Value
0	issue	;

🔗 TLSA / DANE

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

🔐 DNSSEC113ms

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

🏷️ SOA0ms

Field	Value
Serial	2017093403
Primary NS (MNAME)	pdns77.ultradns.com
Responsible (RNAME)	domadmin@arrow.com
Refresh	43200s
Retry	7200s
Expire	1209600s
Minimum (neg-cache TTL)	86400s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

43ms

A

44ms

MX

37ms

AAAA

37ms

TXT

216ms

CAA

36ms

HTTPS

38ms

TLSA

62ms

SOA

0ms

MTA-STS

61ms

DNSSEC

113ms

SRV

78ms

Total

581ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 11:29:17	581ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-08-26 11:07:27	750ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-08-25 20:22:40	688ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-08-22 15:40:06	1345ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-08-21 15:31:30	5437ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-08-20 15:26:59	24990ms	4 NS 1 A 1 MX	❓ Unknown	View
2026-08-18 03:52:44	996ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-08-16 13:32:27	2943ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-08-15 11:25:43	1054ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-08-14 06:16:01	997ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-08-06 18:46:48	911ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-08-03 22:02:25	9702ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-07-29 20:27:56	1386ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-07-28 04:17:09	875ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-07-27 04:14:48	2661ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-07-26 03:52:06	3187ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-07-25 03:13:44	17202ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-07-24 02:26:08	1803ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-07-23 01:41:34	1330ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-07-21 00:44:54	8650ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-07-19 23:22:10	944ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-07-18 22:44:42	856ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-07-17 21:54:52	844ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-07-16 16:05:22	926ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-07-14 19:19:10	1004ms	4 NS 1 A 1 MX	🔓 Insecure	View