citrix-training.dk DNS records

🖥️ Nameservers4 records 31ms

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 32ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
52.234.0.82	300s	—	AS8075	Microsoft Corporation	52.224.0.0/11	🇺🇸 United States	San Jose

📧 MX Records1 records 40ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	600s	. 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 211ms

TXT Record
v=spf1 -all

✉️ SPF

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

📨 DMARC

Policy	Record (_dmarc.citrix-training.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

✗ No CAA records — any CA may issue certificates

🔗 TLSA / DANE

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

🔐 DNSSEC99ms

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	2020074481
Primary NS (MNAME)	pdns77.ultradns.com
Responsible (RNAME)	domadmin@arrow.com
Refresh	43200s
Retry	7200s
Expire	1209600s
Minimum (neg-cache TTL)	86400s

📋 RegistrationWHOIS fetched 2026-07-02 17:36:53

Field	Value
Registrar	CSC Digital Brand Service, Inc
Registered	2006-05-24
Expires	2027-05-31 (271d)

📋 WHOIS

⏱️ Lookup Timing

NS

31ms

A

32ms

MX

40ms

AAAA

44ms

TXT

211ms

CAA

41ms

HTTPS

45ms

TLSA

64ms

SOA

0ms

MTA-STS

64ms

DNSSEC

99ms

SRV

72ms

Total

550ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 12:52:10	550ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-08-20 19:54:34	977ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-08-14 15:22:24	812ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-08-11 12:12:32	3004ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-08-06 22:18:28	788ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-08-01 14:00:30	1327ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-07-28 03:44:01	868ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-07-27 03:13:21	16577ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-07-26 02:33:26	993ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-07-25 02:08:33	785ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-07-24 01:08:57	13705ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-07-23 00:16:32	9622ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-07-19 10:42:35	1690ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-07-18 07:56:03	952ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-07-17 06:24:24	1785ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-07-05 12:15:27	9723ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-07-02 17:30:22	971ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-06-20 15:32:44	593ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-06-16 20:56:15	633ms	4 NS 1 A 0 MX	🔓 Insecure	View