kluwer-ulrich.dk DNS records

🖥️ Nameservers2 records 41ms

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 Records4 records 81ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
216.239.32.21	3600s	any-in-2015.1e100.net	AS15169	Google LLC	216.239.32.0/20	🇺🇸 United States	—
216.239.34.21	3600s	any-in-2215.1e100.net	AS15169	Google LLC	216.239.32.0/20	🇺🇸 United States	—
216.239.36.21	3600s	any-in-2415.1e100.net	AS15169	Google LLC	216.239.32.0/20	🇺🇸 United States	—
216.239.38.21	3600s	any-in-2615.1e100.net	AS15169	Google LLC	216.239.32.0/20	🇺🇸 United States	—

📧 MX Records5 records 61ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	3600s	aspmx.l.google.com	108.177.14.26 2a00:1450:4010:c02::1b 2a00:1450:4010:c02::1b	lt-in-f26.1e100.net le-in-x1b.1e100.net le-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
5	3600s	alt1.aspmx.l.google.com	192.178.158.26 2404:6800:4013:813::1a	lcdels-in-f26.1e100.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::1a	yukulwh-in-f27.1e100.net mad01s14-in-f27.1e100.net yukulwh-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
10	3600s	alt3.aspmx.l.google.com	172.253.158.26 2404:6800:4003:c26::1a	so-in-f26.1e100.net so-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	3600s	alt4.aspmx.l.google.com	108.177.125.27 2404:6800:4008:c01::1b	tp-in-f27.1e100.net tp-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records1 records 180ms

TXT Record
v=spf1 include:_spf.google.com include:_custspf.one.com ~all

✉️ SPF

Policy	Record (kluwer-ulrich.dk)
~all (soft fail)	v=spf1 include:_spf.google.com include:_custspf.one.com ~all

📨 DMARC

Policy	Record (_dmarc.kluwer-ulrich.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:dmarc-reports@kluwer-ulrich.dk; ruf=mailto:dmarc-failures@kluwer-ulrich.dk; pct=100; sp=none; aspf=r; adkim=r

📬 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

🔗 TLSA / DANE

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

🔐 DNSSEC105ms

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

🏷️ SOA0ms

Field	Value
Serial	2026081701
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

41ms

A

81ms

MX

61ms

AAAA

40ms

TXT

180ms

CAA

58ms

HTTPS

38ms

TLSA

188ms

SOA

0ms

MTA-STS

66ms

DNSSEC

105ms

SRV

77ms

Total

922ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-09-02 18:51:26	922ms	2 NS 4 A 5 MX	🔒 Secure	View
2026-08-25 14:27:49	730ms	2 NS 4 A 5 MX	🔒 Secure	View
2026-08-17 15:23:14	6475ms	2 NS 4 A 5 MX	🔒 Secure	View
2026-07-18 03:12:59	6056ms	2 NS 4 A 5 MX	🔒 Secure	View
2026-07-02 14:00:30	2871ms	2 NS 4 A 5 MX	🔒 Secure	View
2026-06-17 21:41:23	1234ms	2 NS 4 A 5 MX	🔒 Secure	View