sfu.dk

Records from scan: 2026-10-08 00:15:33  ·  534ms total  ·  last checked 2026-10-22 18:03 (unchanged)
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

sfu.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was registered on 14 August 1997 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 198.185.159.144 is hosted by Squarespace, Inc. (AS53831) in United States. Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 3 more. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

4 records   24ms
NameserverIP addressesPTRASN / ISP
ns1.simply.com 2a02:2339:1:15c::4562:4562
91.197.248.78		 ns1.simply.com
ns1.simply.com		 AS48854 team.blue Denmark A/S
AS48854 team.blue Denmark A/S
ns2.simply.com 185.25.141.15
2a02:2339:4006:101::4562:4562		 ns2.simply.com
ns2.simply.com		 AS48854 team.blue Denmark A/S
AS48854 team.blue Denmark A/S
ns3.simply.com 91.197.248.79 ns3.simply.com AS48854 team.blue Denmark A/S
ns4.simply.com 91.197.248.80 ns4.simply.com AS48854 team.blue Denmark A/S

🌍 A Records#

4 records   32ms
IPTTLPTRASNISP / OrgCIDRCountryCity
198.185.159.144 3600s — AS53831 Squarespace, Inc. 198.185.159.0/24 🇺🇸 United States New York
198.185.159.145 3600s — AS53831 Squarespace, Inc. 198.185.159.0/24 🇺🇸 United States —
198.49.23.144 3600s — AS53831 Squarespace, Inc. 198.49.23.0/24 🇺🇸 United States —
198.49.23.145 3600s — AS53831 Squarespace, Inc. 198.49.23.0/24 🇺🇸 United States —

📧 MX Records#

5 records   20ms
PriorityTTLMail ServerIP addressesPTRASN
1 3600s aspmx.l.google.com 2a00:1450:4010:c07::1b
2a00:1450:4010:c07::1b
64.233.163.27		 lf-in-f27.1e100.net
lf-in-x1b.1e100.net
lj-in-f27.1e100.net		 AS15169 Google LLC
AS15169 Google LLC
AS15169 Google LLC
5 3600s alt1.aspmx.l.google.com 192.178.158.26
2404:6800:4013:813::1b		 lcdels-in-f26.1e100.net
lcdels-in-f27.1e100.net		 AS15169 Google LLC
AS15169 Google LLC
5 3600s alt2.aspmx.l.google.com 173.194.41.26
173.194.41.26
2404:6800:4001:c01::1b		 mad01s14-in-f26.1e100.net
yukulwh-in-f26.1e100.net
yukulwh-in-f27.1e100.net		 AS15169 Google LLC
AS15169 Google LLC
AS15169 Google LLC
10 3600s alt3.aspmx.l.google.com 172.253.158.26
2404:6800:4003:c26::1b		 so-in-f26.1e100.net
so-in-f27.1e100.net		 AS15169 Google LLC
AS15169 Google LLC
10 3600s alt4.aspmx.l.google.com 108.177.125.27
2404:6800:4008:c01::1a		 tp-in-f27.1e100.net
tp-in-f26.1e100.net		 AS15169 Google LLC
AS15169 Google LLC

📧 Autodiscover / Autoconfig#

ServiceCNAME / IP
🔶 Autoconfigmaildiscover.simply.com → 94.231.108.222

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records   40ms
ServicePriorityWeightPortTarget
_autodiscover._tcp 10 10 443 maildiscover.simply.com

📝 TXT Records#

2 records   106ms
TXT Record
asv=cc254b664511148e801414885569699e
v=spf1 a mx a:antispam.groupcare.com ip4:213.150.59.248 ip4:209.85.208.65 include:_spf.google.com ~all

✉️ SPF#

PolicyRecord (sfu.dk)
~all (soft fail) v=spf1 a mx a:antispam.groupcare.com ip4:213.150.59.248 ip4:209.85.208.65 include:_spf.google.com ~all

📨 DMARC#

PolicyRecord (_dmarc.sfu.dk)
p=none (monitor only) v=DMARC1; p=none;

📬 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#

checked 2026-10-08 00:15:33
www CNAMEext-cust.squarespace.com (all on squarespace.com)
www vs bare domainSame network
WildcardNo
Denial of existenceNSEC zone can be walked (all names enumerable)
CDS / CDNSKEYPublished: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

✍️ DKIM keys#

3 found
SelectorCNAMEKey
google — RSA · ~1024 bit below 2048 bit
s1 s1.domainkey.u1584542.wl043.sendgrid.net RSA · ~2048 bit
s2 s2.domainkey.u1584542.wl043.sendgrid.net RSA · ~1024 bit below 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: 4/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

50ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated

🏷️ SOA#

21ms
FieldValue
Serial2026093000
Primary NS (MNAME)ns1.simply.com
Responsible (RNAME)hostmaster@simply.com
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)3600s

📋 Registration#

WHOIS fetched 2026-10-22 17:50:51
FieldValue
RegistrarSimply.com A/S
Registered1997-08-14
Expires2027-09-30 (342d)

🔗 Same registrant#

1 domain

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).

DomainRegistrar
sfushop.dkPunktum dk A/S (direct)
📋 WHOIS#

⏱️ Lookup Timing#

NS
24ms
A
32ms
MX
20ms
AAAA
25ms
TXT
106ms
CAA
23ms
HTTPS
34ms
TLSA
143ms
SOA
21ms
MTA-STS
40ms
DNSSEC
50ms
SRV
40ms
Total
534ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-08 00:15:33 shown 534ms 4 NS 4 A 5 MX 🔒 Secure
2026-10-01 08:54:13 2015ms 4 NS 4 A 5 MX 🔒 Secure
2026-09-24 07:03:06 817ms 4 NS 4 A 5 MX 🔒 Secure
2026-09-22 12:49:30 742ms 4 NS 4 A 5 MX 🔒 Secure
2026-08-27 05:27:44 1072ms 4 NS 4 A 5 MX 🔒 Secure
2026-07-04 12:20:51 1399ms 4 NS 4 A 5 MX 🔒 Secure
2026-06-22 22:52:19 901ms 4 NS 4 A 5 MX ⚠️ Bogus
2026-06-22 11:25:18 887ms 4 NS 4 A 5 MX 🔒 Secure
2026-06-18 04:20:53 946ms 4 NS 4 A 5 MX 🔒 Secure
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