bigfm.de

Checked 21 October 2026, 21:40 UTC · via 8.8.8.8
!Passed with warnings
21 passed 3 warnings 0 failed 5 info

Registration

info

.de country-code

Found

TLD
.de (country-code)
ICANN policies apply
no

Checks

  • i
    .de is a country-code TLD (ccTLD)
    Country-code TLD: governed by its local registry under national policy, not by an ICANN contract. Registrar accreditation, dispute resolution and RDAP/WHOIS rules are set by the registry.
    #1
  • ✓ TLD delegated and signed #2
    .de is delegated in the root zone and DNSSEC-signed.
  • i
    Registration data not available
    No registration data via RDAP: the registry of .de offers no RDAP service. Many ccTLD registries don't offer RDAP; check the registry's WHOIS instead.
    #3

Delegation

info

dean.ns.cloudflare.com, tegan.ns.cloudflare.com

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
dean.ns.cloudflare.com, tegan.ns.cloudflare.com
NS in the zone
dean.ns.cloudflare.com, tegan.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
dean.ns.cloudflare.com173.245.59.153 108.162.193.153 172.64.33.153 2803:f800:50::6ca2:c199 2a06:98c1:50::ac40:2199 2606:4700:58::adf5:3b99AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US-
tegan.ns.cloudflare.com108.162.192.226 173.245.58.226 172.64.32.226 2a06:98c1:50::ac40:20e2 2606:4700:50::adf5:3ae2 2803:f800:50::6ca2:c0e2AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: dean.ns.cloudflare.com, tegan.ns.cloudflare.com.
    #6
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • ✓ No glue needed #8
    All nameservers are outside the zone, so no glue records are needed.
  • ✓ All names resolve #9
    Every nameserver name has an address and is not an alias.
  • ✓ Nameservers in different networks #10
    The nameservers are spread over 6 IPv4 /24s and 4 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS13335 (CLOUDFLARENET - Cloudflare, Inc., US): 12 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.
    #11
  • i
    All nameserver names under .com
    All nameserver names are under one TLD, so a problem with that TLD also makes the nameservers unreachable. Some operators use names under two TLDs for extra resilience.
    #12
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

warn

12 of 12 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
dean.ns.cloudflare.com 173.245.59.153NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
dean.ns.cloudflare.com 108.162.193.153NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
dean.ns.cloudflare.com 172.64.33.153NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
dean.ns.cloudflare.com 2803:f800:50::6ca2:c199NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
dean.ns.cloudflare.com 2a06:98c1:50::ac40:2199NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
dean.ns.cloudflare.com 2606:4700:58::adf5:3b99NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
tegan.ns.cloudflare.com 108.162.192.226NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
tegan.ns.cloudflare.com 173.245.58.226NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
tegan.ns.cloudflare.com 172.64.32.226NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
tegan.ns.cloudflare.com 2a06:98c1:50::ac40:20e2NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
tegan.ns.cloudflare.com 2606:4700:50::adf5:3ae2NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
tegan.ns.cloudflare.com 2803:f800:50::6ca2:c0e2NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2

Checks

  • ✓ All respond #14
    All 12 nameserver addresses answered.
  • ✓ All authoritative #15
    Every responding nameserver answers authoritatively for the zone.
  • ✓ No recursion #16
    The nameservers do not answer recursive queries for other domains.
  • !
    Software version disclosed
    These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: dean.ns.cloudflare.com: "2026.10.2"; tegan.ns.cloudflare.com: "2026.10.2". Hide or replace the version string.
    #17
  • ✓ Zone transfers refused #18
    No nameserver allows a zone transfer to the public.
  • ✓ TCP supported #19
    All nameservers answer over TCP.
  • ✓ EDNS supported #20
    All nameservers support EDNS(0).
  • ✓ Public addresses #21
    All nameserver addresses are publicly routable.

SOA

pass

serial 2418080150 · primary dean.ns.cloudflare.com

Found

Primary (MNAME)
dean.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2418080150
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
dean.ns.cloudflare.com (173.245.59.153)2418080150
dean.ns.cloudflare.com (108.162.193.153)2418080150
dean.ns.cloudflare.com (172.64.33.153)2418080150
dean.ns.cloudflare.com (2803:f800:50::6ca2:c199)2418080150
dean.ns.cloudflare.com (2a06:98c1:50::ac40:2199)2418080150
dean.ns.cloudflare.com (2606:4700:58::adf5:3b99)2418080150
tegan.ns.cloudflare.com (108.162.192.226)2418080150
tegan.ns.cloudflare.com (173.245.58.226)2418080150
tegan.ns.cloudflare.com (172.64.32.226)2418080150
tegan.ns.cloudflare.com (2a06:98c1:50::ac40:20e2)2418080150
tegan.ns.cloudflare.com (2606:4700:50::adf5:3ae2)2418080150
tegan.ns.cloudflare.com (2803:f800:50::6ca2:c0e2)2418080150

Checks

  • ✓ Serial 2418080150 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h46m40s, retry 40m, expire 7d, negative TTL 30m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver dean.ns.cloudflare.com is one of the listed nameservers.
  • ✓ Contact dns@cloudflare.com #25
    The SOA RNAME dns.cloudflare.com means dns@cloudflare.com.
  • ✓ Timestamp serial #26
    The serial 2418080150 is a Unix timestamp (2046-08-17 00:55 UTC).

DNSSEC

warn

Not signed

Found

Validated by resolver
no

Checks

  • !
    Not signed
    The zone is not signed with DNSSEC, so answers can be spoofed. Enable DNSSEC at your DNS provider and publish the DS record at your registrar.
    #27

Records

warn

26 records at the apex

Found

Read from
173.245.59.153:53
TypeValueTTL
SOAdean.ns.cloudflare.com. dns.cloudflare.com. 2418080150 10000 2400 604800 18001800
NSdean.ns.cloudflare.com.86400
NStegan.ns.cloudflare.com.86400
A104.20.32.248300
A172.66.174.143300
AAAA2606:4700:10::6814:20f8300
AAAA2606:4700:10::ac42:ae8f300
MX0 bigfm-de.mail.protection.outlook.com.120
TXT"MS=ms67795296"300
TXT"brave-ledger-verification=98052513e491acfb7288249eca3c1b5fb0df82f38aba9d4b848e860768c4b15d"300
TXT"facebook-domain-verification=fhadcbs3vsar1e05qrr29my7s7b1ha"300
TXT"google-site-verification=8wSaWTXY28uw00DFgvBvAgnrmZk9Ou-EU61FbS6HaZM"300
TXT"google-site-verification=fQ2i74nlst91IYPGbLjAE5JUcBkqS9bbT4KCtUJrWD4"300
TXT"google-site-verification=pe2jWEDRXHQ7n4OY9Ljlsxk-J4CfPTypw5R9Nq61qYU"300
TXT"google-site-verification=tZeaNbv_47kk8yDl7kDJIwKPXLNhYAOvMkyLbominHg"300
TXT"v=spf1 include:spf.protection.outlook.com -all"300
CAA0 issue "comodoca.com"3600
CAA0 issue "digicert.com; cansignhttpexchanges=yes"3600
CAA0 issue "letsencrypt.org"3600
CAA0 issue "pki.goog; cansignhttpexchanges=yes"3600
CAA0 issue "ssl.com"3600
CAA0 issuewild "comodoca.com"3600
CAA0 issuewild "digicert.com; cansignhttpexchanges=yes"3600
CAA0 issuewild "letsencrypt.org"3600
CAA0 issuewild "pki.goog; cansignhttpexchanges=yes"3600
CAA0 issuewild "ssl.com"3600

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: MX (2m). Low TTLs are useful just before a planned change.
    #32
  • ✓ No CNAME at the apex #33
    The zone apex has no CNAME record.
  • ✓ No wildcard #34
    Names that don't exist return NXDOMAIN.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: comodoca.com, digicert.com, letsencrypt.org, pki.goog, ssl.com.