customoffice.dk

📜 Historical scan 2026-06-16 23:16:45  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

customoffice.dk is a .dk domain served by 2 nameservers (alan.ns.cloudflare.com, grace.ns.cloudflare.com). It was registered on 5 May 2011 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.6.43 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 3 more. The zone is not DNSSEC-signed, 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   28ms
NameserverIP addressesPTRASN / ISP
alan.ns.cloudflare.com — — —
grace.ns.cloudflare.com — — —

🌍 A Records#

2 records   24ms
IPTTLPTRASNISP / OrgCIDRCountryCity
104.21.6.43 — — AS13335 Cloudflare, Inc. 104.21.0.0/17 — —
172.67.154.231 — — AS13335 Cloudflare, Inc. 172.67.128.0/17 — —

📧 MX Records#

5 records   26ms
PriorityTTLMail ServerIP addressesPTRASN
10 — aspmx.l.google.com 64.233.162.27 li-in-f27.1e100.net AS15169 Google LLC
20 — alt1.aspmx.l.google.com 192.178.158.27 lcdels-in-f27.1e100.net AS15169 Google LLC
20 — alt2.aspmx.l.google.com 192.178.158.26 lcdels-in-f26.1e100.net AS15169 Google LLC
30 — aspmx2.googlemail.com 192.178.211.26 lcbomp-in-f26.1e100.net AS15169 Google LLC
30 — aspmx3.googlemail.com 192.178.211.27 lcbomp-in-f27.1e100.net AS15169 Google LLC

🔷 AAAA Records (IPv6)#

2 records   26ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2606:4700:3034::6815:62b — — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —
2606:4700:3035::ac43:9ae7 — — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —

🔐 HTTPS Records#

1 records   26ms
PriorityTargetSvcParams
1 service . alpn="h2" ipv4hint=104.21.6.43,172.67.154.231 ech=AEX+DQBBxAAgACDj7TsM1XQ2Je0M+m3yUJPxgZYPa5bYDBn/ZlIFcoqSfQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::6815:62b,2606:4700:3035::ac43:9ae7

📝 TXT Records#

3 records   80ms
TXT Record
anthropic-domain-verification-992zwc=5DwOIzes67TW8WqSXY5u37qen
google-site-verification=aXGpqjI8Vdr2ShtlY5hYlCEyx6iVBLY0DE4ZZEv4Hqg
v=spf1 include:sendgrid.net include:servers.mcsv.net include:_spf.google.com include:email.freshdesk.com include:spf.simply.com include:146721256.spf08.hubspotemail.net -all

✉️ SPF#

PolicyRecord (customoffice.dk)
-all (hard fail) v=spf1 include:sendgrid.net include:servers.mcsv.net include:_spf.google.com include:email.freshdesk.com include:spf.simply.com include:146721256.spf08.hubspotemail.net -all

📨 DMARC#

PolicyRecord (_dmarc.customoffice.dk)
p=none (monitor only) v=DMARC1; p=none; rua=mailto:developer@customoffice.dk; pct=100; adkim=r; aspf=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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-17 14:26:18
www104.21.6.43 172.67.154.231 2606:4700:3032::ac43:9ae7 2606:4700:3034::6815:62b (AS13335) (address records, no CNAME)
www vs bare domainSame network
WildcardNo

✍️ DKIM keys#

3 found
SelectorCNAMEKey
google — RSA · ~2048 bit
s1 s1.domainkey.u23374310.wl061.sendgrid.net RSA · ~2048 bit
s2 s2.domainkey.u23374310.wl061.sendgrid.net 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: 13/10 · policy: -all

  • error 13 DNS lookups: the limit is 10, so a receiver whose evaluation gets past the 10th returns permerror (SPF fails)

🔗 TLSA / DANE#

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

🔐 DNSSEC#

104ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer

🏷️ SOA#

25ms
FieldValue
Serial2406997572
Primary NS (MNAME)alan.ns.cloudflare.com
Responsible (RNAME)dns@cloudflare.com
Refresh10000s
Retry2400s
Expire604800s
Minimum (neg-cache TTL)1800s

📋 Registration#

WHOIS fetched 2026-10-17 14:54:30
FieldValue
RegistrarSimply.com A/S
Registered2011-05-05
Expires2027-05-31 (222d)

🔗 Same registrant#

0 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).

No other domain with this registrant in our WHOIS data yet
📋 WHOIS#

⏱️ Lookup Timing#

NS
28ms
A
24ms
MX
26ms
AAAA
26ms
TXT
80ms
CAA
26ms
HTTPS
26ms
TLSA
48ms
SOA
25ms
MTA-STS
2038ms
DNSSEC
104ms
SRV
0ms
Total
2512ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-17 14:26:18 2671ms 2 NS 2 A 5 MX 🔓 Insecure
2026-10-13 08:08:36 6336ms 2 NS 2 A 5 MX 🔓 Insecure
2026-10-05 20:09:10 5230ms 2 NS 2 A 5 MX 🔓 Insecure
2026-09-30 19:31:00 908ms 2 NS 2 A 5 MX 🔓 Insecure
2026-09-27 18:14:58 9618ms 2 NS 2 A 5 MX 🔓 Insecure
2026-09-23 13:47:01 1596ms 2 NS 2 A 5 MX 🔓 Insecure
2026-09-18 19:23:23 890ms 2 NS 2 A 5 MX 🔓 Insecure
2026-09-05 06:17:36 1288ms 2 NS 2 A 5 MX 🔓 Insecure
2026-09-03 19:43:24 1615ms 2 NS 2 A 5 MX 🔓 Insecure
2026-08-30 23:19:21 745ms 2 NS 2 A 5 MX 🔓 Insecure
2026-08-27 11:43:40 887ms 2 NS 2 A 5 MX 🔓 Insecure
2026-08-24 20:14:15 9034ms 2 NS 2 A 5 MX 🔓 Insecure
2026-08-21 17:42:54 9484ms 2 NS 2 A 5 MX 🔓 Insecure
2026-08-20 17:37:40 13630ms 2 NS 2 A 5 MX 🔓 Insecure
2026-08-19 14:52:29 2496ms 2 NS 2 A 5 MX 🔓 Insecure
2026-08-08 09:09:09 17511ms 2 NS 2 A 5 MX 🔓 Insecure
2026-08-07 01:26:57 1527ms 2 NS 2 A 5 MX 🔓 Insecure
2026-08-02 02:25:26 9407ms 2 NS 2 A 5 MX 🔓 Insecure
2026-07-31 02:44:52 1473ms 2 NS 2 A 5 MX 🔓 Insecure
2026-07-25 07:50:30 2054ms 2 NS 2 A 5 MX 🔓 Insecure
2026-07-24 07:43:33 3243ms 2 NS 2 A 5 MX 🔓 Insecure
2026-07-18 04:46:14 7170ms 2 NS 2 A 5 MX 🔓 Insecure
2026-07-11 13:12:57 9291ms 2 NS 2 A 5 MX 🔓 Insecure
2026-07-09 02:17:10 10160ms 2 NS 2 A 5 MX 🔓 Insecure
2026-07-07 01:08:32 3078ms 2 NS 2 A 5 MX 🔓 Insecure
dhd.dk [/] search Domains, Hosts & DNS — .dk zone