jesperbierbaum.dk

📜 Historical scan 2026-09-18 12:15:07  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

jesperbierbaum.dk is a .dk domain served by 2 nameservers (cory.ns.cloudflare.com, melinda.ns.cloudflare.com). It was registered on 6 March 2025 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.79.217 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx.simply.com. The zone is not DNSSEC-signed, has no 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   125ms
NameserverIP addressesPTRASN / ISP
cory.ns.cloudflare.com 108.162.193.93
172.64.33.93
173.245.59.93
2606:4700:58::adf5:3b5d
2803:f800:50::6ca2:c15d
2a06:98c1:50::ac40:215d		 cory.ns.cloudflare.com
cory.ns.cloudflare.com
cory.ns.cloudflare.com
cory.ns.cloudflare.com
cory.ns.cloudflare.com
cory.ns.cloudflare.com		 AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
melinda.ns.cloudflare.com 108.162.192.198
172.64.32.198
173.245.58.198
2606:4700:50::adf5:3ac6
2803:f800:50::6ca2:c0c6
2a06:98c1:50::ac40:20c6		 melinda.ns.cloudflare.com
melinda.ns.cloudflare.com
melinda.ns.cloudflare.com
melinda.ns.cloudflare.com
melinda.ns.cloudflare.com
melinda.ns.cloudflare.com		 AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.

🌍 A Records#

2 records   124ms
IPTTLPTRASNISP / OrgCIDRCountryCity
104.21.79.217 300s — AS13335 Cloudflare, Inc. 104.21.0.0/17 — —
172.67.171.141 300s — AS13335 Cloudflare, Inc. 172.67.128.0/17 — —

📧 MX Records#

1 records   130ms
PriorityTTLMail ServerIP addressesPTRASN
10 300s mx.simply.com 94.231.106.20 mx.simply.com AS48854 team.blue Denmark A/S

📧 Autodiscover / Autoconfig#

ServiceCNAME / IP
🔶 Autoconfig104.21.79.217

🔷 AAAA Records (IPv6)#

2 records   137ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2606:4700:3034::ac43:ab8d 300s — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —
2606:4700:3035::6815:4fd9 300s — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —

🔐 HTTPS Records#

1 records   127ms
PriorityTargetSvcParams
1 service . alpn="h3,h2" ipv4hint=104.21.79.217,172.67.171.141 ech=AEX+DQBBAgAgACBCXOrAICe3hNz4bsTNOZlO85T5qeQ6Kz+UixdFbimmTgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::ac43:ab8d,2606:4700:3035::6815:4fd9

📝 TXT Records#

1 records   261ms
TXT Record
v=spf1 include:spf.simply.com -all

✉️ SPF#

PolicyRecord (jesperbierbaum.dk)
-all (hard fail) v=spf1 include:spf.simply.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 2026-10-07 16:51:46
www104.21.79.217 172.67.171.141 2606:4700:3034::ac43:ab8d 2606:4700:3035::6815:4fd9 (AS13335) (address records, no CNAME)
www vs bare domainSame network
WildcardNo

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔏 ACME Challenge#

TypeNameValue
TXT _acme-challenge.jesperbierbaum.dk fE3nM6EdZoJNW_Hd5U8otGAI5w8H4LQSm3o3HilKbSw
TXT _acme-challenge.jesperbierbaum.dk fYjb4pdqNyVZ2iMfdEINAkeM1FSZO6XVJFFg6MxBXVo

🔗 TLSA / DANE#

2 records   92ms
Service / OwnerTypeCert association
SMTP _25._tcp.mx.simply.com DANE-EE · SPKI · SHA-256 97A3BA009F39C761BFFB6574340E8138…
SMTP _25._tcp.mx.simply.com DANE-EE · SPKI · SHA-256 A9D603AF4D7ED6B9246B4B68500CD6F2…

🔐 DNSSEC#

171ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer

🏷️ SOA#

0ms
FieldValue
Serial2414826876
Primary NS (MNAME)cory.ns.cloudflare.com
Responsible (RNAME)dns@cloudflare.com
Refresh10000s
Retry2400s
Expire604800s
Minimum (neg-cache TTL)1800s

📋 Registration#

WHOIS fetched 2026-10-15 17:31:33
FieldValue
RegistrarSimply.com A/S
Registered2025-03-06
Expires2027-03-05 (138d)

🔗 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
125ms
A
124ms
MX
130ms
AAAA
137ms
TXT
261ms
CAA
120ms
HTTPS
127ms
TLSA
92ms
SOA
0ms
MTA-STS
113ms
DNSSEC
171ms
SRV
138ms
Total
1588ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-04 15:39:18 872ms 2 NS 2 A 1 MX 🔓 Insecure
2026-09-29 15:15:35 1648ms 2 NS 2 A 1 MX 🔓 Insecure
2026-09-26 14:34:02 1672ms 2 NS 2 A 1 MX 🔓 Insecure
2026-09-24 14:17:56 1305ms 2 NS 2 A 1 MX 🔓 Insecure
2026-09-23 13:35:36 749ms 2 NS 2 A 1 MX 🔓 Insecure
2026-09-20 17:47:09 1352ms 2 NS 2 A 1 MX 🔓 Insecure
2026-09-18 12:15:07 shown 1588ms 2 NS 2 A 1 MX 🔓 Insecure
2026-09-11 10:19:54 2522ms 2 NS 2 A 1 MX 🔓 Insecure
2026-09-08 17:13:33 2447ms 2 NS 2 A 1 MX 🔓 Insecure
2026-08-24 14:23:45 2446ms 2 NS 2 A 1 MX 🔓 Insecure
2026-08-22 07:47:03 1442ms 2 NS 2 A 1 MX 🔓 Insecure
2026-07-14 01:15:34 989ms 2 NS 2 A 1 MX 🔓 Insecure
2026-06-27 17:14:59 1158ms 2 NS 2 A 1 MX 🔓 Insecure
2026-06-23 23:49:00 995ms 2 NS 2 A 1 MX 🔓 Insecure
2026-06-23 00:12:16 1173ms 0 NS 0 A 0 MX ❓ Unknown
2026-06-21 10:05:24 960ms 2 NS 2 A 1 MX 🔓 Insecure
2026-06-20 21:42:03 2082ms 2 NS 2 A 1 MX 🔓 Insecure
2026-06-20 06:26:38 2535ms 2 NS 2 A 1 MX 🔓 Insecure
2026-06-17 11:55:28 876ms 2 NS 2 A 1 MX 🔓 Insecure
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