el-stroem.dk

📜 Historical scan 2026-09-09 19:36:58 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

el-stroem.dk is a .dk domain served by 2 nameservers (blair.ns.cloudflare.com, frank.ns.cloudflare.com). It was registered on 29 April 1999 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.43.89 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by elstroem-dk0e.mail.protection.outlook.com. The zone is not DNSSEC-signed, publishes a 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 65ms

Nameserver	IP addresses	PTR	ASN / ISP
blair.ns.cloudflare.com	108.162.194.121 162.159.38.121 172.64.34.121 2606:4700:50::a29f:2679 2803:f800:50::6ca2:c279 2a06:98c1:50::ac40:2279	blair.ns.cloudflare.com blair.ns.cloudflare.com blair.ns.cloudflare.com blair.ns.cloudflare.com blair.ns.cloudflare.com blair.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
frank.ns.cloudflare.com	108.162.193.166 172.64.33.166 173.245.59.166 2606:4700:58::adf5:3ba6 2803:f800:50::6ca2:c1a6 2a06:98c1:50::ac40:21a6	frank.ns.cloudflare.com frank.ns.cloudflare.com frank.ns.cloudflare.com frank.ns.cloudflare.com frank.ns.cloudflare.com frank.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 38ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.43.89	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.177.104	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 43ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	elstroem-dk0e.mail.protection.outlook.com	2a01:111:f403:ca04::5 2a01:111:f403:ca04::9 2a01:111:f403:ca09::24 2a01:111:f403:ca48::c 52.101.68.21 52.101.68.5 52.101.73.126 52.101.91.153	mail-db3pr0202cu00205.inbound.protection.outlook.com mail-db7pr03cu00601.inbound.protection.outlook.com mail-am6pr02cu00204.inbound.protection.outlook.com mail-miypr03cu00104.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-du2pr03cu00105.inbound.protection.outlook.com mail-am8pr83cu00106.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	104.21.43.89

🔷 AAAA Records (IPv6)#

2 records 39ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3034::6815:2b59	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::ac43:b168	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 20ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.43.89,172.67.177.104 ech=AEX+DQBBNgAgACBc25Kn75BoPMkgzYKg/dXgaMCgmHg8eHg37zltEo7pFgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::6815:2b59,2606:4700:3035::ac43:b168

🔌 SRV Records#

1 records 73ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records#

1 records 205ms

TXT Record
v=spf1 a ip4:37.49.138.114 ip4:23.227.38.65 ip4:23.227.38.74 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (el-stroem.dk)
-all (hard fail)	v=spf1 a ip4:37.49.138.114 ip4:23.227.38.65 ip4:23.227.38.74 include:spf.protection.outlook.com -all

📨 DMARC#

Policy	Record (_dmarc.el-stroem.dk)
p=none (monitor only)	v=DMARC1; p=none; pct=100;

📬 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 2026-10-22 05:57:05

www	104.21.43.89 172.67.177.104 2606:4700:3034::6815:2b59 2606:4700:3035::ac43:b168 (AS13335) (address records, no CNAME)
www vs bare domain	Same network el-stroem.dk: 104.21.43.89 172.67.177.104 2606:4700:3034::6815:2b59 2606:4700:3035::ac43:b168 (AS13335) www.el-stroem.dk: 104.21.43.89 172.67.177.104 2606:4700:3034::6815:2b59 2606:4700:3035::ac43:b168 (AS13335)
Wildcard	No

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-elstroem-dk0e._domainkey.elstroemdk.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: 2/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

64ms

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	2413371583
Primary NS (MNAME)	blair.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-13 05:46:01

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1999-04-29
Expires	2027-06-30 (248d)

🔗 Same registrant#

1 domain

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

Domain	Registrar
el-strøm.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

65ms

38ms

43ms

AAAA

39ms

TXT

205ms

CAA

29ms

HTTPS

20ms

TLSA

317ms

SOA

0ms

MTA-STS

48ms

DNSSEC

64ms

SRV

73ms

Total

894ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-22 05:57:05	665ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-08 04:59:48	1218ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-01 08:26:41	909ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-29 07:12:30	1891ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-28 06:46:48	1052ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-09 19:36:58 shown	894ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-29 00:34:54	863ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-31 23:40:13	1706ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-02 15:11:45	10712ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-27 04:06:20	2877ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-24 20:10:12	2253ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-19 11:13:25	1814ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-18 13:10:00	1079ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-17 06:35:23	556ms	2 NS 2 A 1 MX	🔓 Insecure