bsag.de

Checked 21 October 2026, 21:54 UTC · via 8.8.8.8
✗Problems found
18 passed 4 warnings 1 failed 6 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

warn

ns10.microserve.de, ns20.microserve.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns10.microserve.de, ns20.microserve.de
NS in the zone
ns10.microserve.de, ns20.microserve.de
NameserverAddressesNetwork (AS)Glue
ns10.microserve.de136.243.177.185AS24940 HETZNER-AS - Hetzner Online GmbH, DE136.243.177.185
ns20.microserve.de144.76.201.88AS24940 HETZNER-AS - Hetzner Online GmbH, DE144.76.201.88

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns10.microserve.de, ns20.microserve.de.
    #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 2 IPv4 /24s and 0 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS24940 (HETZNER-AS - Hetzner Online GmbH, DE): 2 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 .de
    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
  • !
    No IPv6
    None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.
    #13

Nameservers

fail

2 of 2 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns10.microserve.de 136.243.177.185NOERROR, 3 ms, authoritativenoyes / yesrefused9.11.4-P2-RedHat-9.11.4-26.P2.el7_9.2
ns20.microserve.de 144.76.201.88NOERROR, 3 ms, authoritativenoyes / yesALLOWED (108 records)9.11.4-P2-RedHat-9.11.4-26.P2.el7_9.2

Checks

  • ✓ All respond #14
    All 2 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: ns10.microserve.de: "9.11.4-P2-RedHat-9.11.4-26.P2.el7_9.2"; ns20.microserve.de: "9.11.4-P2-RedHat-9.11.4-26.P2.el7_9.2". Hide or replace the version string.
    #17
  • ✗
    Zone transfer allowed
    These nameservers send the complete zone to anyone who asks (AXFR), exposing all host names: ns20.microserve.de (144.76.201.88): 108 records. Restrict zone transfers to your secondary servers.
    #18
  • ✓ 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

warn

serial 2026072500 · primary ns10.microserve.de

Found

Primary (MNAME)
ns10.microserve.de
Contact (RNAME)
admin.ns10.microserve.de
Serial
2026072500
Refresh / retry
3600 s / 10800 s
Expire
36000 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
ns10.microserve.de (136.243.177.185)2026072500
ns20.microserve.de (144.76.201.88)2026072500

Checks

  • ✓ Serial 2026072500 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    retry 3h should be shorter than refresh 1h; expire 10h is shorter than 7d; secondaries stop answering too soon when the primary is down. Current values: refresh 1h, retry 3h, expire 10h, negative TTL 30m.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns10.microserve.de is one of the listed nameservers.
  • ✓ Contact admin@ns10.microserve.de #25
    The SOA RNAME admin.ns10.microserve.de means admin@ns10.microserve.de.
  • ✓ Date-based serial #26
    The serial 2026072500 follows the YYYYMMDDnn convention (2026-07-25).

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

info

16 records at the apex

Found

Read from
136.243.177.185:53
TypeValueTTL
SOAns10.microserve.de. admin.ns10.microserve.de. 2026072500 3600 10800 36000 180043200
NSns10.microserve.de.43200
NSns20.microserve.de.43200
A31.24.144.10043200
MX50 mail.bsag.de.43200
MX100 mail1.bsag.de.43200
TXT"v=spf1 exists:%{i}._i.%{d}._d.espf.agari-dns.net include:%{d}.ea.spf-protect.agari-dns.net -all"43200
TXT"google-site-verification=XSGgF7qsZTLkH-LbwC-jtJuuJU5Nx_-PvsjkVGkPotA"43200
TXT"f4j6lan9fcsve60kpervmi7ecf"43200
TXT"ifn36ppsrk1js31bbo82t9t2qc"43200
TXT"atlassian-domain-verification=zGSWlKvVzpIgpcNQW6Y61d8E1xZnma19qVFYhLodbn5BuccfmiYLePtaz1Ymjr/B"43200
TXT"MS=ms23548360"43200
TXT"brevo-code:2e64eff045d5fe66f9fc182bf81adbbe"43200
TXT"_y6omf5b60dvo5lstbl0tf5xp17w6r8d"43200
TXT"swisssign-check=dASEqpt1yTkvJW4rubmVlgMSy9Y"43200
TXT"apple-domain-verification=PB0kdmk6RTF2n1iD"43200

Checks

  • ✓ TTLs within range #32
    TTLs: A 12h, MX 12h, NS 12h. The NS TTL at the parent is 1d and in the zone 12h; resolvers may use either.
  • ✓ No CNAME at the apex #33
    The zone apex has no CNAME record.
  • ✓ No wildcard #34
    Names that don't exist return NXDOMAIN.
  • i
    No CAA records
    Without CAA records any certificate authority may issue certificates for this domain. A CAA record limits issuance to the CAs you use.
    #35