alsterit.dk

📜 Historical scan 2026-06-16 12:57:10  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

alsterit.dk is a .dk domain served by 2 nameservers (grace.ns.cloudflare.com, henry.ns.cloudflare.com). It was registered on 6 January 2012 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.65.49 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by isaac.mx.cloudflare.net, linda.mx.cloudflare.net and 1 more. The zone is DNSSEC-signed and validates, 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   36ms
NameserverIP addressesPTRASN / ISP
grace.ns.cloudflare.com — — —
henry.ns.cloudflare.com — — —

🌍 A Records#

2 records   64ms
IPTTLPTRASNISP / OrgCIDRCountryCity
104.21.65.49 — — AS13335 Cloudflare, Inc. 104.21.0.0/17 — —
172.67.140.168 — — AS13335 Cloudflare, Inc. 172.67.128.0/17 — —

📧 MX Records#

3 records   46ms
PriorityTTLMail ServerIP addressesPTRASN
19 — isaac.mx.cloudflare.net 162.159.205.17
162.159.205.18
162.159.205.19		 route2.mx.cloudflare.net
route2.mx.cloudflare.net
route2.mx.cloudflare.net		 AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
25 — linda.mx.cloudflare.net 162.159.205.23
162.159.205.24
162.159.205.25		 route3.mx.cloudflare.net
route3.mx.cloudflare.net
route3.mx.cloudflare.net		 AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
35 — amir.mx.cloudflare.net 162.159.205.11
162.159.205.12
162.159.205.13		 route1.mx.cloudflare.net
route1.mx.cloudflare.net
route1.mx.cloudflare.net		 AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.

🔷 AAAA Records (IPv6)#

2 records   56ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2606:4700:3033::6815:4131 — — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —
2606:4700:3035::ac43:8ca8 — — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —

🔐 HTTPS Records#

1 records   47ms
PriorityTargetSvcParams
1 service . alpn="h3,h2" ipv4hint=104.21.65.49,172.67.140.168 ech=AEX+DQBBzAAgACCRSl2GarTD7edzme/SRSjBGfCZcUyEhedgk/e1csdNQwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::6815:4131,2606:4700:3035::ac43:8ca8

📝 TXT Records#

2 records   122ms
TXT Record
google-site-verification=IElltSbjQsmY97RGHoH3GQ7JQGgYR-Im1jKFqKy8n9s
v=spf1 include:_spf.mx.cloudflare.net ~all

✉️ SPF#

PolicyRecord (alsterit.dk)
~all (soft fail) v=spf1 include:_spf.mx.cloudflare.net ~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 2026-10-09 07:52:26
www104.21.65.49 172.67.140.168 2606:4700:3030::6815:4131 2606:4700:3037::ac43:8ca8 (AS13335) (address records, no CNAME)
www vs bare domainSame network
WildcardNo
Denial of existenceCompact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEYDelete signal: the zone asks the registry to remove its DS (go insecure) 1 CDS, 1 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

9 records   147ms
Service / OwnerTypeCert association
SMTP _25._tcp.amir.mx.cloudflare.net DANE-TA · SPKI · SHA-256 59E738E674221702AF1EDB87C5200C1A…
SMTP _25._tcp.amir.mx.cloudflare.net DANE-EE · SPKI · SHA-256 9BE5B7D47F9EFF930C11EB04D27CAE6B…
SMTP _25._tcp.amir.mx.cloudflare.net DANE-EE · SPKI · SHA-256 0F0C6C164A36F97E7B4C5A5B69D6F4F2…
SMTP _25._tcp.isaac.mx.cloudflare.net DANE-TA · SPKI · SHA-256 59E738E674221702AF1EDB87C5200C1A…
SMTP _25._tcp.isaac.mx.cloudflare.net DANE-EE · SPKI · SHA-256 0F0C6C164A36F97E7B4C5A5B69D6F4F2…
SMTP _25._tcp.isaac.mx.cloudflare.net DANE-EE · SPKI · SHA-256 9BE5B7D47F9EFF930C11EB04D27CAE6B…
SMTP _25._tcp.linda.mx.cloudflare.net DANE-EE · SPKI · SHA-256 9BE5B7D47F9EFF930C11EB04D27CAE6B…
SMTP _25._tcp.linda.mx.cloudflare.net DANE-EE · SPKI · SHA-256 0F0C6C164A36F97E7B4C5A5B69D6F4F2…
SMTP _25._tcp.linda.mx.cloudflare.net DANE-TA · SPKI · SHA-256 59E738E674221702AF1EDB87C5200C1A…

🔐 DNSSEC#

155ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated

🏷️ SOA#

61ms
FieldValue
Serial2406832091
Primary NS (MNAME)grace.ns.cloudflare.com
Responsible (RNAME)dns@cloudflare.com
Refresh10000s
Retry2400s
Expire604800s
Minimum (neg-cache TTL)1800s

📋 Registration#

WHOIS fetched 2026-10-05 07:00:08
FieldValue
RegistrarSimply.com A/S
Registered2012-01-06
Expires2027-01-31 (106d)
📋 WHOIS#

⏱️ Lookup Timing#

NS
36ms
A
64ms
MX
46ms
AAAA
56ms
TXT
122ms
CAA
52ms
HTTPS
47ms
TLSA
147ms
SOA
61ms
MTA-STS
54ms
DNSSEC
155ms
SRV
0ms
Total
2876ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-09 07:52:26 4351ms 2 NS 2 A 3 MX 🔓 Insecure
2026-10-07 07:41:13 2622ms 2 NS 2 A 3 MX 🔓 Insecure
2026-10-05 06:26:10 1055ms 2 NS 2 A 3 MX 🔓 Insecure
2026-10-01 05:52:04 1227ms 2 NS 2 A 3 MX 🔒 Secure
2026-09-25 19:57:39 952ms 2 NS 2 A 3 MX 🔒 Secure
2026-09-24 15:49:35 1117ms 2 NS 2 A 3 MX 🔒 Secure
2026-09-10 20:10:07 2231ms 2 NS 2 A 3 MX 🔒 Secure
2026-08-30 23:48:15 2375ms 2 NS 2 A 3 MX 🔒 Secure
2026-08-28 10:24:01 3177ms 2 NS 2 A 3 MX 🔒 Secure
2026-08-12 20:32:21 6362ms 2 NS 2 A 3 MX 🔒 Secure
2026-08-08 23:37:08 2000ms 2 NS 2 A 3 MX 🔒 Secure
2026-07-23 23:07:42 27046ms 2 NS 2 A 3 MX 🔒 Secure
2026-07-16 00:10:01 3777ms 2 NS 2 A 3 MX 🔒 Secure
2026-07-08 22:04:19 2336ms 2 NS 2 A 3 MX 🔒 Secure
2026-06-26 16:41:55 1204ms 2 NS 2 A 3 MX 🔒 Secure
2026-06-20 03:36:41 2789ms 2 NS 2 A 3 MX 🔒 Secure
2026-06-16 12:57:10 shown 2876ms 2 NS 2 A 3 MX 🔒 Secure
2026-06-16 12:55:15 2598ms 2 NS 2 A 3 MX 🔒 Secure
dhd.dk [/] search Domains, Hosts & DNS — .dk zone