crescendo.dk DNS records

🖥️ Nameservers2 records 86ms

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 Records1 records 79ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
142.93.129.186	600s	—	AS14061	DigitalOcean, LLC	142.93.0.0/16	🇳🇱 The Netherlands	Amsterdam

📧 MX Records1 records 72ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	crescendo-dk.mail.protection.outlook.com	2a01:111:f403:ca04::2 2a01:111:f403:ca04::7 2a01:111:f403:ca04::9 2a01:111:f403:ca04::c 52.101.103.137 52.101.73.16 52.101.73.26 52.101.73.28	mail-du2pr03cu00102.inbound.protection.outlook.com mail-db4pr02cu00307.inbound.protection.outlook.com mail-db7pr03cu00601.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-miypr02cu00101.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com mail-as9pr05cu01302.inbound.protection.outlook.com mail-am7pr05cu00204.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 → 40.104.116.8

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 146ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	0	1	5061	sipfed.online.lync.com

📝 TXT Records5 records 226ms

TXT Record
google-site-verification=CfQ49g-ERECwmEM2fr7Ol0zX2sLkhKTDvnlUx-gF0zk
google-site-verification=k__jjntmOlbay9RZ-7RACfEtXijzfQamCZgIWBbSjX4
k=rsa; t=y;p=MHwwDQYJKoZIhvcNAQEBBQADawAwaAJhALrX+Bh+Q57KLD29hcDi5+IUlMC7De8afAimNtDo0GcZfe71bEypT5liMe7LOEkBy1WoSG5zD0FT9zby0Vn3Gb6XUVZPs9d8VV1SShLDVufoSMkneGuXSUtU4bYEDHs0CQIDAQAB
MS=ms45582805
v=spf1 ip4:91.215.162.220 ip4:94.189.16.170 include:_spf.createsend.com include:spf.mailanyone.net include:emsd1.com include:spf.protection.outlook.com include:web.shared.mysmtp.com -all

✉️ SPF

Policy	Record (crescendo.dk)
-all (hard fail)	v=spf1 ip4:91.215.162.220 ip4:94.189.16.170 include:_spf.createsend.com include:spf.mailanyone.net include:emsd1.com include:spf.protection.outlook.com include:web.shared.mysmtp.com -all

📨 DMARC

Policy	Record (_dmarc.crescendo.dk)
p=quarantine	v=DMARC1; p=quarantine; rua=mailto:jf@crescendo.dk; ruf=mailto:jf@crescendo.dk

📬 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)

🔐 DNSSEC188ms

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

🏷️ SOA0ms

Field	Value
Serial	2026082804
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

86ms

A

79ms

MX

72ms

AAAA

128ms

TXT

226ms

CAA

81ms

HTTPS

85ms

TLSA

431ms

SOA

0ms

MTA-STS

150ms

DNSSEC

188ms

SRV

146ms

Total

1319ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-29 09:52:48	1319ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-28 04:30:29	1877ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-06 04:05:09	1766ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-14 11:18:13	5330ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-30 20:15:00	729ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-22 19:39:24	661ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-21 10:38:34	1231ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-20 23:00:52	1101ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-16 22:55:58	1080ms	2 NS 1 A 1 MX	🔒 Secure	View