zastrow.dk DNS records

🖥️ Nameservers2 records 50ms

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 56ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
77.111.240.229	3600s	webcluster2.wordpresspod1-cph3.one.com	AS51468	One.com A/S	77.111.240.0/22	🇩🇰 Denmark	Copenhagen

📧 MX Records4 records 47ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	10800s	mx1.mailpod16-cph3.g1i.one.com	5.249.232.33	mx1.mailpod16-cph3.g1i.one.com	AS51468 One.com A/S
10	10800s	mx2.mailpod16-cph3.g1i.one.com	5.249.232.34	mx2.mailpod16-cph3.g1i.one.com	AS51468 One.com A/S
10	10800s	mx3.mailpod16-cph3.g1i.one.com	5.249.232.35	mx3.mailpod16-cph3.g1i.one.com	AS51468 One.com A/S
10	10800s	mx4.mailpod16-cph3.g1i.one.com	5.249.232.36	mx4.mailpod16-cph3.g1i.one.com	AS51468 One.com A/S

🔷 AAAA Records (IPv6)1 records 66ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a02:2350:5:101:802c:d7c4:196:21e1	3600s	—	AS51468	One.com A/S	2a02:2350:0:0:0:0:0:0/32	🇩🇰 Denmark	Copenhagen

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records1 records 186ms

TXT Record
v=spf1 include:sendgrid.net include:_custspf.one.com ~all

✉️ SPF

Policy	Record (zastrow.dk)
~all (soft fail)	v=spf1 include:sendgrid.net include:_custspf.one.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 / DANE4 records 84ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx1.mailpod16-cph3.g1i.one.com	DANE-EE · SPKI · SHA-256	24689A1B29BE70163B6DCF262497B6EC…
SMTP _25._tcp.mx2.mailpod16-cph3.g1i.one.com	DANE-EE · SPKI · SHA-256	24689A1B29BE70163B6DCF262497B6EC…
SMTP _25._tcp.mx3.mailpod16-cph3.g1i.one.com	DANE-EE · SPKI · SHA-256	24689A1B29BE70163B6DCF262497B6EC…
SMTP _25._tcp.mx4.mailpod16-cph3.g1i.one.com	DANE-EE · SPKI · SHA-256	24689A1B29BE70163B6DCF262497B6EC…

🔐 DNSSEC78ms

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

🏷️ SOA0ms

Field	Value
Serial	2026081205
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

50ms

A

56ms

MX

47ms

AAAA

66ms

TXT

186ms

CAA

48ms

HTTPS

59ms

TLSA

84ms

SOA

0ms

MTA-STS

55ms

DNSSEC

78ms

SRV

67ms

Total

712ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-28 07:19:44	712ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-08-13 06:20:07	5531ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-08-10 16:14:35	1450ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-08-03 16:04:35	8972ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-07-27 17:06:47	1167ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-07-26 16:50:52	1027ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-07-25 16:18:19	8962ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-07-24 16:02:33	922ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-07-23 15:38:28	1420ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-07-22 13:30:55	1077ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-07-21 07:52:05	1100ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-07-20 02:06:22	9049ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-07-18 15:30:59	953ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-07-17 11:39:28	867ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-07-16 01:50:03	3470ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-07-09 00:59:50	1020ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-07-06 08:17:09	949ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-07-04 22:59:42	1013ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-07-03 18:05:15	929ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-07-01 21:50:21	742ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-06-17 23:45:25	1019ms	2 NS 1 A 4 MX	🔒 Secure	View