perfk.dk

📜 Historical scan 2026-08-10 20:46:30 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

perfk.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 18 May 2007 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 199.36.158.100 is hosted by Fastly, Inc. (AS54113) in United States. Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 3 more. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. 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 54ms

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 Records#

1 records 58ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
199.36.158.100	3600s	—	AS54113	Fastly, Inc.	199.36.158.0/24	🇺🇸 United States	—

📧 MX Records#

5 records 49ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	3600s	aspmx.l.google.com	2a00:1450:4010:c0f::1a 2a00:1450:4010:c0f::1a 74.125.205.27	lt-in-x1a.1e100.net lt-in-f26.1e100.net le-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
5	3600s	alt1.aspmx.l.google.com	192.178.158.27 2404:6800:4013:813::1a	lcdels-in-f27.1e100.net lcdels-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	3600s	alt2.aspmx.l.google.com	173.194.41.27 173.194.41.27 2404:6800:4001:c01::1b	mad01s14-in-f27.1e100.net yukulwh-in-f27.1e100.net yukulwh-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
10	3600s	alt3.aspmx.l.google.com	172.253.158.27 2404:6800:4003:c26::1b	so-in-f27.1e100.net so-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	3600s	alt4.aspmx.l.google.com	108.177.125.27 2404:6800:4008:c01::1a	tp-in-f27.1e100.net tp-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	perfk.dk → 199.36.158.100
🔶 Autoconfig	perfk.dk → 199.36.158.100

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 183ms

TXT Record
google-site-verification=swKiVimtOe-5wHhBsuBfxdnVIThGudk4e0OdGX8SCWM
v=spf1 include:_spf.google.com include:_custspf.one.com ~all

✉️ SPF#

Policy	Record (perfk.dk)
~all (soft fail)	v=spf1 include:_spf.google.com 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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-12 07:48:50

www CNAME	perfk.dk (all on perfk.dk) → 199.36.158.100 (AS54113)
www vs bare domain	Same network perfk.dk: 199.36.158.100 (AS54113) www.perfk.dk: 199.36.158.100 (AS54113)
Wildcard	Yes: any name under the zone resolves
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: ~all

No problems found

🔏 ACME Challenge#

Type	Name	Value
CNAME	_acme-challenge.perfk.dk	perfk.dk

🔗 TLSA / DANE#

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

🔐 DNSSEC#

83ms

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

🏷️ SOA#

55ms

Field	Value
Serial	2026071701
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

WHOIS fetched 2026-10-12 08:20:30

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2007-05-18
Expires	2028-05-31 (589d)

🔗 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
varbjerggaard.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

54ms

58ms

49ms

AAAA

39ms

TXT

183ms

CAA

51ms

HTTPS

50ms

TLSA

127ms

SOA

55ms

MTA-STS

55ms

DNSSEC

83ms

SRV

66ms

Total

5370ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-12 07:48:50	1003ms	2 NS 1 A 5 MX	🔒 Secure
2026-10-03 22:25:08	487ms	2 NS 1 A 5 MX	🔒 Secure
2026-09-16 18:26:33	798ms	2 NS 1 A 5 MX	🔒 Secure
2026-09-13 04:24:09	1098ms	2 NS 1 A 5 MX	🔒 Secure
2026-09-03 22:41:01	775ms	2 NS 1 A 5 MX	🔒 Secure
2026-08-25 04:31:59	3117ms	2 NS 1 A 5 MX	🔒 Secure
2026-08-12 02:49:44	4836ms	2 NS 1 A 5 MX	🔒 Secure
2026-08-10 20:46:30 shown	5370ms	2 NS 1 A 5 MX	🔒 Secure
2026-07-17 23:35:49	1822ms	2 NS 1 A 5 MX	🔒 Secure
2026-07-14 14:59:11	5318ms	2 NS 1 A 5 MX	🔒 Secure
2026-07-12 08:19:33	1441ms	2 NS 1 A 5 MX	🔒 Secure
2026-07-03 12:52:21	4786ms	2 NS 1 A 5 MX	🔒 Secure
2026-06-20 00:12:45	1089ms	2 NS 1 A 5 MX	🔒 Secure
2026-06-17 14:34:55	2222ms	2 NS 1 A 5 MX	🔒 Secure