ctolstrup.dk DNS records

🖥️ Nameservers2 records 42ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records1 records 50ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
162.210.102.230	43200s	—	AS14555	LiquidNet US LLC	162.210.96.0/21	🇺🇸 United States	—

📧 MX Records3 records 39ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	600s	mx.zoho.com	204.141.43.44 204.141.43.44 204.141.43.44 204.141.43.44 204.141.43.44 204.141.43.44 204.141.43.44 204.141.43.44 204.141.43.44	mx.zoho.com mx3.zoho.com mx2.zoho.com mx8.zoho.com mx7.zoho.com mx6.zoho.com mx3.zohomail.com mx2.zohomail.com mx.zohomail.com	AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO
20	600s	mx2.zoho.com	204.141.43.44 204.141.43.44 204.141.43.44 204.141.43.44 204.141.43.44 204.141.43.44 204.141.43.44 204.141.43.44 204.141.43.44	mx8.zoho.com mx2.zohomail.com mx3.zohomail.com mx6.zoho.com mx7.zoho.com mx2.zoho.com mx3.zoho.com mx.zoho.com mx.zohomail.com	AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO
30	600s	mx3.zoho.com	204.141.43.44 204.141.43.44 204.141.43.44 204.141.43.44 204.141.43.44 204.141.43.44 204.141.43.44 204.141.43.44 204.141.43.44	mx.zohomail.com mx.zoho.com mx3.zoho.com mx2.zoho.com mx8.zoho.com mx7.zoho.com mx6.zoho.com mx3.zohomail.com mx2.zohomail.com	AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO AS2639 ZOHO

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records2 records 164ms

TXT Record
v=spf1 include:zoho.com ~all
zoho-verification=zb74656079.zmverify.zoho.com

✉️ SPF

Policy	Record (ctolstrup.dk)
~all (soft fail)	v=spf1 include:zoho.com ~all

📨 DMARC

✗ No DMARC record — mail spoofing not restricted

📬 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)

🔐 DNSSEC82ms

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

🏷️ SOA63ms

Field	Value
Serial	2026081301
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

42ms

A

50ms

MX

39ms

AAAA

57ms

TXT

164ms

CAA

48ms

HTTPS

50ms

TLSA

313ms

SOA

63ms

MTA-STS

66ms

DNSSEC

82ms

SRV

62ms

Total

5474ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-19 23:42:31	5474ms	2 NS 1 A 3 MX	🔒 Secure	View
2026-08-14 17:58:21	2744ms	2 NS 1 A 3 MX	🔒 Secure	View
2026-07-17 15:31:47	17108ms	2 NS 1 A 3 MX	🔒 Secure	View
2026-07-14 12:09:33	16868ms	2 NS 1 A 3 MX	🔒 Secure	View
2026-06-26 18:40:37	839ms	2 NS 1 A 3 MX	🔒 Secure	View
2026-06-19 15:40:42	2979ms	2 NS 1 A 3 MX	🔒 Secure	View
2026-06-19 12:55:01	1131ms	2 NS 1 A 3 MX	🔒 Secure	View
2026-06-16 23:10:50	2873ms	2 NS 1 A 3 MX	🔒 Secure	View