serridslev.dk

📜 Historical scan 2026-06-24 18:54:10 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

serridslev.dk is a .dk domain served by 2 nameservers (damon.ns.cloudflare.com, melinda.ns.cloudflare.com). It was registered on 10 April 2013 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.25.16 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by serridslev-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, has no DMARC policy and is reachable over IPv6. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 140ms

Nameserver	IP addresses	PTR	ASN / ISP
damon.ns.cloudflare.com	108.162.193.96 172.64.33.96 173.245.59.96 2606:4700:58::adf5:3b60 2803:f800:50::6ca2:c160 2a06:98c1:50::ac40:2160	damon.ns.cloudflare.com damon.ns.cloudflare.com damon.ns.cloudflare.com damon.ns.cloudflare.com damon.ns.cloudflare.com damon.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
melinda.ns.cloudflare.com	108.162.192.198 172.64.32.198 173.245.58.198 2606:4700:50::adf5:3ac6 2803:f800:50::6ca2:c0c6 2a06:98c1:50::ac40:20c6	melinda.ns.cloudflare.com melinda.ns.cloudflare.com melinda.ns.cloudflare.com melinda.ns.cloudflare.com melinda.ns.cloudflare.com melinda.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 100ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.25.16	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.221.145	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 106ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	serridslev-dk.mail.protection.outlook.com	2a01:111:f403:ca04::9 2a01:111:f403:ca09::3 2a01:111:f403:ca09::7 2a01:111:f403:ca09::8 52.101.68.15 52.101.73.19 52.101.73.2 52.101.73.24	mail-db7pr03cu00601.inbound.protection.outlook.com mail-am6pr04cu00303.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com mail-db6pr03cu00107.inbound.protection.outlook.com mail-as8pr04cu00803.inbound.protection.outlook.com mail-as9pr07cu00302.inbound.protection.outlook.com mail-as8pr05cu00300.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 → 52.98.179.168
🔶 Autoconfig	104.21.25.16

🔷 AAAA Records (IPv6)#

2 records 114ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::6815:1910	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::ac43:dd91	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 130ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.25.16,172.67.221.145 ech=AEX+DQBBpwAgACDo/XZK9WMmGUCu8Y1c0FhuQkvvhv7Eh3p+EjEWTF1DbgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:1910,2606:4700:3035::ac43:dd91

🔌 SRV Records#

3 records 214ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	0	100	443	mail.your-server.de
_imaps._tcp	0	100	993	mail.your-server.de
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records#

2 records 235ms

TXT Record
MS=ms15853692
v=spf1 +a +mx include:spf.protection.outlook.com ~all

✉️ SPF#

Policy	Record (serridslev.dk)
~all (soft fail)	v=spf1 +a +mx include:spf.protection.outlook.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

🧩 Web & zone#

latest probe, not this scan · checked 2026-09-30 05:54:06

www	Address record (no CNAME)
Wildcard	No

✍️ DKIM keys#

2 found

Selector	CNAME	Key
selector1	selector1-serridslev-dk._domainkey.serridslev.onmicrosoft.com	RSA · ~2048 bit
selector2	selector2-serridslev-dk._domainkey.serridslev.onmicrosoft.com	RSA · ~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: 3/10 · policy: ~all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.serridslev.dk	20ZPhv8SPwVhAuFcAW9H6t2D-povX-SkiIUs5exZ3J4
TXT	_acme-challenge.serridslev.dk	5fMYniTLMK3jmc7w2bd7o0n_tFs1h-e_0LqWBFawuwU

🔗 TLSA / DANE#

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

🔐 DNSSEC#

153ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2407537076
Primary NS (MNAME)	damon.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-08 16:39:09

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2013-04-10
Expires	2027-04-30 (194d)

📋 WHOIS#

⏱️ Lookup Timing#

140ms

100ms

106ms

AAAA

114ms

TXT

235ms

CAA

125ms

HTTPS

130ms

TLSA

454ms

SOA

0ms

MTA-STS

93ms

DNSSEC

153ms

SRV

214ms

Total

1745ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-14 15:05:58	1192ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-11 10:15:45	1014ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-26 10:55:15	1254ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-25 11:29:33	1280ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-22 00:03:59	9561ms	2 NS 2 A 1 MX	❓ Unknown
2026-08-19 23:39:18	2995ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-16 16:00:28	10285ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-28 22:47:03	1673ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-24 18:54:10 shown	1745ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-21 10:42:40	1085ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-20 23:13:46	2938ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-17 12:21:29	1560ms	2 NS 2 A 1 MX	🔓 Insecure