jaholst.dk

Records from scan: 2026-10-03 22:57:40 · 1135ms total · last checked 2026-10-20 17:42 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

jaholst.dk is a .dk domain served by 2 nameservers (ian.ns.cloudflare.com, laylah.ns.cloudflare.com). It was registered on 7 March 2002 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.35.221 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by jaholst-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a DMARC policy and is reachable over IPv6. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 42ms

Nameserver	IP addresses	PTR	ASN / ISP
ian.ns.cloudflare.com	108.162.193.118 172.64.33.118 173.245.59.118 2606:4700:58::adf5:3b76 2803:f800:50::6ca2:c176 2a06:98c1:50::ac40:2176	ian.ns.cloudflare.com ian.ns.cloudflare.com ian.ns.cloudflare.com ian.ns.cloudflare.com ian.ns.cloudflare.com ian.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
laylah.ns.cloudflare.com	108.162.194.230 162.159.38.230 172.64.34.230 2606:4700:50::a29f:26e6 2803:f800:50::6ca2:c2e6 2a06:98c1:50::ac40:22e6	laylah.ns.cloudflare.com laylah.ns.cloudflare.com laylah.ns.cloudflare.com laylah.ns.cloudflare.com laylah.ns.cloudflare.com laylah.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 42ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.35.221	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.180.60	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 38ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	jaholst-dk.mail.protection.outlook.com	2a01:111:f403:ca21::8 2a01:111:f403:ca21::e 2a01:111:f403:ca38::8 2a01:111:f403:ca48::8 52.101.103.39 52.101.68.21 52.101.68.27 52.101.91.153	mail-matpr04cu00100.inbound.protection.outlook.com mail-matpr04cu00306.inbound.protection.outlook.com mail-wa4pr04cu00100.inbound.protection.outlook.com mail-miypr02cu00100.inbound.protection.outlook.com mail-miypr05cu00207.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-db7pr03cu00503.inbound.protection.outlook.com mail-matpr04cu00101.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 52.98.149.136

🔷 AAAA Records (IPv6)#

2 records 40ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3032::6815:23dd	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3036::ac43:b43c	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 50ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.35.221,172.67.180.60 ech=AEX+DQBBMAAgACAGiZaeDyBKjJx83THIdOazIxWXuKYnrrZzs0Tbi6O8DQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::6815:23dd,2606:4700:3036::ac43:b43c

🔌 SRV Records#

1 records 80ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	0	1	5061	sipfed.online.lync.com

📝 TXT Records#

2 records 185ms

TXT Record
MS=ms18323866
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (jaholst.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com -all

📨 DMARC#

Policy	Record (_dmarc.jaholst.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:97b8be3e98da4791a329009c06b24b75@dmarc-reports.cloudflare.net

📬 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

🧩 Web & zone#

checked 2026-10-18 15:34:13

www	104.21.35.221 172.67.180.60 2606:4700:3032::6815:23dd 2606:4700:3036::ac43:b43c (AS13335) (address records, no CNAME)
www vs bare domain	Same network jaholst.dk: 104.21.35.221 172.67.180.60 2606:4700:3032::6815:23dd 2606:4700:3036::ac43:b43c (AS13335) www.jaholst.dk: 104.21.35.221 172.67.180.60 2606:4700:3032::6815:23dd 2606:4700:3036::ac43:b43c (AS13335)
Wildcard	No
Denial of existence	Compact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-jaholst-dk._domainkey.jaholst.onmicrosoft.com	RSA · ~1024 bit below 2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

84ms

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

🏷️ SOA#

26ms

Field	Value
Serial	2416541168
Primary NS (MNAME)	ian.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-03 23:45:25

Field	Value
Registrar	ONE.COM A/S
Registered	2002-03-07
Expires	2034-04-30 (2748d)

📋 WHOIS#

⏱️ Lookup Timing#

42ms

38ms

AAAA

40ms

TXT

185ms

CAA

33ms

HTTPS

50ms

TLSA

636ms

SOA

26ms

MTA-STS

51ms

DNSSEC

84ms

SRV

80ms

Total

1135ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-03 22:57:40 shown	1135ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-29 22:22:25	1146ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-24 08:21:51	1084ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-11 05:02:01	1475ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-27 22:21:08	1140ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-26 20:18:42	964ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-25 17:50:49	1788ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-16 22:03:40	5536ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-06 17:05:21	3443ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-01 22:54:53	1412ms	2 NS 2 A 1 MX	🔒 Secure
2026-07-27 06:27:42	1663ms	2 NS 2 A 1 MX	🔒 Secure
2026-07-24 04:58:15	2304ms	2 NS 2 A 1 MX	🔒 Secure
2026-07-17 22:02:04	2773ms	2 NS 2 A 1 MX	🔒 Secure
2026-07-16 13:03:59	3429ms	2 NS 2 A 1 MX	🔒 Secure
2026-07-07 16:26:15	6393ms	2 NS 2 A 1 MX	🔒 Secure
2026-07-02 11:44:47	2334ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-19 17:23:22	1243ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-18 16:57:31	1047ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-17 19:50:46	1246ms	2 NS 1 A 1 MX	🔒 Secure