rp-online.de

Checked 22 October 2026, 00:01 UTC · via 8.8.8.8
!Passed with warnings
22 passed 2 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

javier.ns.cloudflare.com, joyce.ns.cloudflare.com

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
javier.ns.cloudflare.com, joyce.ns.cloudflare.com
NS in the zone
javier.ns.cloudflare.com, joyce.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
javier.ns.cloudflare.com162.159.44.204 108.162.195.204 172.64.35.204 2a06:98c1:50::ac40:23cc 2803:f800:50::6ca2:c3cc 2606:4700:58::a29f:2cccAS13335 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-
joyce.ns.cloudflare.com108.162.194.14 172.64.34.14 162.159.38.14 2803:f800:50::6ca2:c20e 2606:4700:50::a29f:260e 2a06:98c1:50::ac40:220eAS13335 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: javier.ns.cloudflare.com, joyce.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
javier.ns.cloudflare.com 162.159.44.204NOERROR, 31 ms, authoritativenoyes / yesrefused2026.10.2
javier.ns.cloudflare.com 108.162.195.204NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
javier.ns.cloudflare.com 172.64.35.204NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
javier.ns.cloudflare.com 2a06:98c1:50::ac40:23ccNOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
javier.ns.cloudflare.com 2803:f800:50::6ca2:c3ccNOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
javier.ns.cloudflare.com 2606:4700:58::a29f:2cccNOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
joyce.ns.cloudflare.com 108.162.194.14NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
joyce.ns.cloudflare.com 172.64.34.14NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
joyce.ns.cloudflare.com 162.159.38.14NOERROR, 31 ms, authoritativenoyes / yesrefused2026.10.2
joyce.ns.cloudflare.com 2803:f800:50::6ca2:c20eNOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
joyce.ns.cloudflare.com 2606:4700:50::a29f:260eNOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
joyce.ns.cloudflare.com 2a06:98c1:50::ac40:220eNOERROR, 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: javier.ns.cloudflare.com: "2026.10.2"; joyce.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 2416947089 · primary javier.ns.cloudflare.com

Found

Primary (MNAME)
javier.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2416947089
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
javier.ns.cloudflare.com (162.159.44.204)2416947089
javier.ns.cloudflare.com (108.162.195.204)2416947089
javier.ns.cloudflare.com (172.64.35.204)2416947089
javier.ns.cloudflare.com (2a06:98c1:50::ac40:23cc)2416947089
javier.ns.cloudflare.com (2803:f800:50::6ca2:c3cc)2416947089
javier.ns.cloudflare.com (2606:4700:58::a29f:2ccc)2416947089
joyce.ns.cloudflare.com (108.162.194.14)2416947089
joyce.ns.cloudflare.com (172.64.34.14)2416947089
joyce.ns.cloudflare.com (162.159.38.14)2416947089
joyce.ns.cloudflare.com (2803:f800:50::6ca2:c20e)2416947089
joyce.ns.cloudflare.com (2606:4700:50::a29f:260e)2416947089
joyce.ns.cloudflare.com (2a06:98c1:50::ac40:220e)2416947089

Checks

  • ✓ Serial 2416947089 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 javier.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 2416947089 is a Unix timestamp (2046-08-03 22:11 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

pass

36 records at the apex

Found

Read from
162.159.44.204:53
TypeValueTTL
SOAjavier.ns.cloudflare.com. dns.cloudflare.com. 2416947089 10000 2400 604800 18001800
NSjavier.ns.cloudflare.com.86400
NSjoyce.ns.cloudflare.com.86400
A104.18.4.157300
A104.18.5.157300
MX0 rponline-de0e.mail.protection.outlook.com.300
TXT"MS=ms88252198"300
TXT"atlassian-domain-verification=DHRvNjKNjmD9oiBwnFRoI5QEHateKZzVUzqUg90EUx/FJcKEbhcEI2xpl2KYHOn7"300
TXT"google-site-verification=Cp5I8PxMRpgJqhR35JrHVxBwWBgJyLqjwVXehN3dTQw"300
TXT"google-site-verification=HAruu99bxezVKJXhW5BgmlSo37Dzoijksnsc8i6ty3Q"300
TXT"google-site-verification=HkuGgi1f-Dmk3-_SS702pxioVN0eNlVLvL7GBwvFeWc"300
TXT"google-site-verification=KzEEdEpRiybTrPvTyGy8Xs6b_hY2bs4zAkTKoLWyp-M"300
TXT"google-site-verification=MCQ9059UxVCM6dlNMhm6c6oGrc66MD9TJp30ca-ClvE"300
TXT"google-site-verification=Pf5E4ZtLtH8W5igO5xB3lPQlStopZ-O_lMUN0Jp7oRA"300
TXT"google-site-verification=S-FuYgNrsgNTuhUp2H892AR4eMTJLzWNSkA6EkVrlK0"300
TXT"google-site-verification=YucHLY0yixPkyzKU8g6HwAeHzLG3QwPtTLDlSY4zOuU"300
TXT"google-site-verification=ZuKngZPgHLsuasBT6ZfYSQOlVfAxRkDRFKqZ01wGuUk"300
TXT"google-site-verification=gT0zfwYVxk3GhJciEpBCRgp735ihNsU2rsg90VJM4C4"300
TXT"google-site-verification=iFl2G2fiKtRpDdOYG4iqX3-SUz_LlTxOTC--APqBiKI"300
TXT"google-site-verification=r8YuvKGh_KPVHhPBP8PNSTEZUZEKqwTxwh8pluqdnmk"300
TXT"google-site-verification=zl1boxOW0I6Ox85gQGtc8URxiCP5-tqm3v_QSNTcpd8"300
TXT"v=spf1 ip4:88.99.64.201 include:spf.rbpd.de include:inxserver.com -all"300
CAA0 iodef "mailto:dev-ops@rp-digital.de"300
CAA0 issue "amazontrust.com"300
CAA0 issue "comodoca.com"300
CAA0 issue "digicert.com; cansignhttpexchanges=yes"300
CAA0 issue "letsencrypt.org"300
CAA0 issue "pki.goog; cansignhttpexchanges=yes"300
CAA0 issue "sectigo.com"300
CAA0 issue "ssl.com"300
CAA0 issuewild "comodoca.com"300
CAA0 issuewild "digicert.com; cansignhttpexchanges=yes"300
CAA0 issuewild "letsencrypt.org"300
CAA0 issuewild "pki.goog; cansignhttpexchanges=yes"300
CAA0 issuewild "sectigo.com"300
CAA0 issuewild "ssl.com"300

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, MX 5m, NS 1d.
  • ✓ 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: amazontrust.com, comodoca.com, digicert.com, letsencrypt.org, pki.goog, sectigo.com, ssl.com.