syntastic.dk

📜 Historical scan 2026-06-20 20:19:21 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

syntastic.dk is a .dk domain served by 2 nameservers (grace.ns.cloudflare.com, graham.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.63.243 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, 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 67ms

Nameserver	IP addresses	PTR	ASN / ISP
grace.ns.cloudflare.com	108.162.192.159 172.64.32.159 173.245.58.159 2606:4700:50::adf5:3a9f 2803:f800:50::6ca2:c09f 2a06:98c1:50::ac40:209f	grace.ns.cloudflare.com grace.ns.cloudflare.com grace.ns.cloudflare.com grace.ns.cloudflare.com grace.ns.cloudflare.com grace.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
graham.ns.cloudflare.com	108.162.193.171 172.64.33.171 173.245.59.171 2606:4700:58::adf5:3bab 2803:f800:50::6ca2:c1ab 2a06:98c1:50::ac40:21ab	graham.ns.cloudflare.com graham.ns.cloudflare.com graham.ns.cloudflare.com graham.ns.cloudflare.com graham.ns.cloudflare.com graham.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 38ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.63.243	600s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.173.94	600s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

5 records 42ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	3600s	aspmx.l.google.com	173.194.221.27 2a00:1450:4025:c03::1a	lm-in-f27.1e100.net rc-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	3600s	alt1.aspmx.l.google.com	192.178.211.26 2404:6800:4013:813::1b	lcbomp-in-f26.1e100.net lcdels-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	3600s	alt2.aspmx.l.google.com	172.253.158.27 2404:6800:4003:c26::1b	so-in-f27.1e100.net so-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	3600s	alt3.aspmx.l.google.com	108.177.125.27 2404:6800:4003:c26::1b	tp-in-f27.1e100.net so-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	3600s	alt4.aspmx.l.google.com	192.178.230.27 2404:6800:400b:c01b::1b	yunrtab-in-f27.1e100.net yunrtab-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	172.67.173.94
🔶 Autoconfig	172.67.173.94

🔷 AAAA Records (IPv6)#

2 records 37ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::6815:3ff3	600s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::ac43:ad5e	600s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 36ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.63.243,172.67.173.94 ech=AEX+DQBB7gAgACA6YMxq103qlP+thN+qM2g13r2RFDyslXXeh2G65GGceAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:3ff3,2606:4700:3035::ac43:ad5e

📝 TXT Records#

2 records 181ms

TXT Record
google-site-verification=Ujo9QU3L9tKUvOoV9zaO8cKv1Hh2L-XoswXbdSkWq3w
v=spf1 include:_spf.google.com ~all

✉️ SPF#

Policy	Record (syntastic.dk)
~all (soft fail)	v=spf1 include:_spf.google.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 2026-10-08 03:00:10

www	104.21.63.243 172.67.173.94 2606:4700:3030::6815:3ff3 2606:4700:3032::ac43:ad5e (AS13335) (address records, no CNAME)
www vs bare domain	Same network syntastic.dk: 104.21.63.243 172.67.173.94 2606:4700:3030::6815:3ff3 2606:4700:3032::ac43:ad5e (AS13335) www.syntastic.dk: 104.21.63.243 172.67.173.94 2606:4700:3030::6815:3ff3 2606:4700:3032::ac43:ad5e (AS13335)
Wildcard	Yes: any name under the zone resolves

✍️ DKIM keys#

1 found

Selector	CNAME	Key
google	—	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#

75ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA#

69ms

Field	Value
Serial	2405424393
Primary NS (MNAME)	grace.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

67ms

38ms

42ms

AAAA

37ms

TXT

181ms

CAA

43ms

HTTPS

36ms

TLSA

66ms

SOA

69ms

MTA-STS

36ms

DNSSEC

75ms

SRV

68ms

Total

637ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-08 03:00:10	1006ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-28 22:55:33	1007ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-24 21:40:19	954ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-23 21:13:35	957ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-07 22:14:21	930ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-01 20:14:15	1019ms	2 NS 2 A 5 MX	🔓 Insecure
2026-07-27 04:17:50	10062ms	2 NS 2 A 5 MX	🔓 Insecure
2026-07-08 11:51:06	2683ms	2 NS 2 A 5 MX	🔓 Insecure
2026-06-26 16:09:42	2709ms	2 NS 2 A 5 MX	🔓 Insecure
2026-06-20 20:19:21 shown	637ms	2 NS 2 A 5 MX	🔓 Insecure
2026-06-17 13:43:47	6932ms	2 NS 2 A 5 MX	🔓 Insecure