aser.dk

📜 Historical scan 2026-06-29 01:40:53 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

aser.dk is a .dk domain served by 2 nameservers (kay.ns.cloudflare.com, odin.ns.cloudflare.com). It was registered on 22 November 2023 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.56.97 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by aser-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 this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 45ms

Nameserver	IP addresses	PTR	ASN / ISP
kay.ns.cloudflare.com	108.162.192.125 172.64.32.125 173.245.58.125 2606:4700:50::adf5:3a7d 2803:f800:50::6ca2:c07d 2a06:98c1:50::ac40:207d	kay.ns.cloudflare.com kay.ns.cloudflare.com kay.ns.cloudflare.com kay.ns.cloudflare.com kay.ns.cloudflare.com kay.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
odin.ns.cloudflare.com	108.162.195.208 162.159.44.208 172.64.35.208 2606:4700:58::a29f:2cd0 2803:f800:50::6ca2:c3d0 2a06:98c1:50::ac40:23d0	odin.ns.cloudflare.com odin.ns.cloudflare.com odin.ns.cloudflare.com odin.ns.cloudflare.com odin.ns.cloudflare.com odin.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 50ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.56.97	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.183.190	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 36ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	aser-dk.mail.protection.outlook.com	2a01:111:f403:ca04::10 2a01:111:f403:ca04::2 2a01:111:f403:ca04::4 2a01:111:f403:ca09::c 52.101.68.16 52.101.68.5 52.101.73.2 52.101.73.22	mail-dbapr03cu00100.inbound.protection.outlook.com mail-du2pr03cu00102.inbound.protection.outlook.com mail-db4pr02cu00204.inbound.protection.outlook.com mail-as8pr05cu00304.inbound.protection.outlook.com mail-db4pr02cu00400.inbound.protection.outlook.com mail-du2pr03cu00105.inbound.protection.outlook.com mail-as9pr07cu00302.inbound.protection.outlook.com mail-am7pr05cu00106.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 → 40.104.116.40
🔶 Autoconfig	104.21.56.97

🔷 AAAA Records (IPv6)#

2 records 41ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::6815:3861	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3032::ac43:b7be	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 47ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.56.97,172.67.183.190 ech=AEX+DQBBKQAgACDp9dd/3kbsexsuJuG0uuFZZU4CuprpJJUf00D/ZxqRLgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:3861,2606:4700:3032::ac43:b7be

🔌 SRV Records#

1 records 69ms

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

📝 TXT Records#

3 records 193ms

TXT Record
_b7q2jnppjw94fpfgebf21xcx5gyxi43
MS=ms31906660
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

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

📨 DMARC#

Policy	Record (_dmarc.aser.dk)
p=reject	v=DMARC1; p=reject; sp=reject; adkim=s; aspf=s; rua=mailto:dmarc@elkjar.com

📬 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 2026-10-08 07:57:09

www	104.21.56.97 172.67.183.190 2606:4700:3033::ac43:b7be 2606:4700:3037::6815:3861 (AS13335) (address records, no CNAME)
www vs bare domain	Same network aser.dk: 104.21.56.97 172.67.183.190 2606:4700:3033::ac43:b7be 2606:4700:3037::6815:3861 (AS13335) www.aser.dk: 104.21.56.97 172.67.183.190 2606:4700:3033::ac43:b7be 2606:4700:3037::6815:3861 (AS13335)
Wildcard	Yes: any name under the zone resolves
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

✍️ DKIM keys#

7 found

Selector	CNAME	Key
default	—	Revoked (empty key)
dkim	—	Revoked (empty key)
k1	—	Revoked (empty key)
mail	—	Revoked (empty key)
s1	—	Revoked (empty key)
s2	—	Revoked (empty key)
selector1	selector1-aser-dk._domainkey.elkjar.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: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

57ms

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

🏷️ SOA#

47ms

Field	Value
Serial	2407812555
Primary NS (MNAME)	kay.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-15 08:49:14

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2023-11-22
Expires	2027-11-21 (399d)

🔗 Same registrant#

3 domains

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
norsegod.dk	Punktum dk A/S (direct)
soelvholm.dk	Punktum dk A/S (direct)
stankute.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

45ms

50ms

36ms

AAAA

41ms

TXT

193ms

CAA

51ms

HTTPS

47ms

TLSA

216ms

SOA

47ms

MTA-STS

49ms

DNSSEC

57ms

SRV

69ms

Total

1174ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-08 07:57:09	1571ms	2 NS 2 A 1 MX	🔒 Secure
2026-10-01 00:42:54	1426ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-29 00:18:52	1107ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-25 23:29:30	842ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-05 14:39:08	1187ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-26 03:18:45	859ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-24 16:20:37	3772ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-12 11:09:46	1760ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-02 19:06:53	1505ms	2 NS 2 A 1 MX	🔒 Secure
2026-07-27 23:03:41	9252ms	2 NS 2 A 1 MX	🔒 Secure
2026-07-24 21:53:19	17478ms	2 NS 2 A 1 MX	🔒 Secure
2026-07-19 19:24:58	3839ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-29 01:40:53 shown	1174ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-27 23:13:55	1011ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-27 15:53:58	1567ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-16 13:44:34	899ms	2 NS 2 A 1 MX	🔒 Secure