ceri.dk

📜 Historical scan 2026-06-26 22:06:55 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

ceri.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 1 July 2025 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 87.116.47.123 is hosted by GlobalConnect A/S (AS31027) in Denmark. Mail is handled by ceri-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a 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 238ms

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 401ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
87.116.47.123	3600s	—	AS31027	GlobalConnect A/S	87.116.0.0/18	🇩🇰 Denmark	Copenhagen

📧 MX Records#

1 records 359ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	ceri-dk.mail.protection.outlook.com	2a01:111:f403:ca04::1 2a01:111:f403:ca09::20 2a01:111:f403:ca09::7 2a01:111:f403:ca09::f 52.101.68.15 52.101.68.16 52.101.68.25 52.101.73.30	mail-db7pr03cu00401.inbound.protection.outlook.com mail-as8pr05cu00400.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-am7pr05cu00307.inbound.protection.outlook.com mail-db6pr03cu00107.inbound.protection.outlook.com mail-db4pr02cu00400.inbound.protection.outlook.com mail-db8pr02cu00101.inbound.protection.outlook.com mail-am7pr05cu00306.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

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 605ms

TXT Record
MS=ms23753967
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

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

📨 DMARC#

Policy	Record (_dmarc.ceri.dk)
p=quarantine	v=DMARC1; p=quarantine; rua=mailto:dmarc@infolink.dk; ruf=mailto:dmarc@infolink.dk; fo=1;

📬 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 2026-10-17 04:25:11

www	87.116.47.123 (AS31027) (address records, no CNAME)
www vs bare domain	Same network ceri.dk: 87.116.47.123 (AS31027) www.ceri.dk: 87.116.47.123 (AS31027)
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-ceri-dk._domainkey.ceridk.p-v1.dkim.mail.microsoft	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#

502ms

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

🏷️ SOA#

220ms

Field	Value
Serial	2026061901
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 2026-10-02 06:57:18

Field	Value
Registrar	ONE.COM A/S
Registered	2025-07-01
Expires	2027-06-30 (254d)

📋 WHOIS#

⏱️ Lookup Timing#

238ms

401ms

359ms

AAAA

261ms

TXT

605ms

CAA

231ms

HTTPS

244ms

TLSA

790ms

SOA

220ms

MTA-STS

271ms

DNSSEC

502ms

SRV

380ms

Total

2222ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-02 06:17:42	919ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-01 06:10:15	956ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-06 22:17:37	3164ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-27 09:15:20	1165ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-25 14:46:56	883ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-02 18:52:37	8886ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-30 09:12:48	1154ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-26 22:06:55 shown	2222ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-25 13:23:59	689ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-25 03:48:37	1695ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-21 19:11:37	1397ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 20:10:12	731ms	2 NS 1 A 1 MX	🔒 Secure