avm.de

Checked 21 October 2026, 21:31 UTC · via 8.8.8.8
!Passed with warnings
23 passed 2 warnings 0 failed 4 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

ns1.avm.de, ns2.avm.de, ns3.avm.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns1.avm.de, ns2.avm.de, ns3.avm.de
NS in the zone
ns1.avm.de, ns2.avm.de, ns3.avm.de
NameserverAddressesNetwork (AS)Glue
ns1.avm.de212.42.244.66 2001:bf0:244:244::66AS44716 DHOSTING-NET - D-hosting die Rackspace & Connectivity GmbH, DE AS12732 GUTCON-NET - GutCon GmbH, DE212.42.244.66 2001:bf0:244:244::66
ns2.avm.de212.42.244.67 2001:bf0:244:244::67AS44716 DHOSTING-NET - D-hosting die Rackspace & Connectivity GmbH, DE AS12732 GUTCON-NET - GutCon GmbH, DE212.42.244.67 2001:bf0:244:244::67
ns3.avm.de212.42.224.68 2001:bf0:212::68AS44716 DHOSTING-NET - D-hosting die Rackspace & Connectivity GmbH, DE AS12732 GUTCON-NET - GutCon GmbH, DE212.42.224.68 2001:bf0:212::68

Checks

  • ✓ 3 nameservers #6
    Delegated to ns1.avm.de, ns2.avm.de, ns3.avm.de.
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • ✓ Glue present and correct #8
    Glue is published for the nameservers inside the zone: ns1.avm.de, ns2.avm.de, ns3.avm.de.
  • ✓ 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 2 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS12732 (GUTCON-NET - GutCon GmbH, DE): 3 addresses; AS44716 (DHOSTING-NET - D-hosting die Rackspace & Connectivity GmbH, DE): 3 addresses.
  • 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
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

warn

6 of 6 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.avm.de 212.42.244.66NOERROR, 10 ms, authoritativenoyes / yesrefused9.18.39-0ubuntu0.22.04.7-Ubuntu
ns1.avm.de 2001:bf0:244:244::66NOERROR, 13 ms, authoritativenoyes / yesrefused9.18.39-0ubuntu0.22.04.7-Ubuntu
ns2.avm.de 212.42.244.67NOERROR, 10 ms, authoritativenoyes / yesrefused9.18.39-0ubuntu0.22.04.7-Ubuntu
ns2.avm.de 2001:bf0:244:244::67NOERROR, 13 ms, authoritativenoyes / yesrefused9.18.39-0ubuntu0.22.04.7-Ubuntu
ns3.avm.de 212.42.224.68NOERROR, 8 ms, authoritativenoyes / yesrefused9.18.39-0ubuntu0.22.04.7-Ubuntu
ns3.avm.de 2001:bf0:212::68NOERROR, 12 ms, authoritativenoyes / yesrefused9.18.39-0ubuntu0.22.04.7-Ubuntu

Checks

  • ✓ All respond #14
    All 6 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: ns1.avm.de: "9.18.39-0ubuntu0.22.04.7-Ubuntu"; ns2.avm.de: "9.18.39-0ubuntu0.22.04.7-Ubuntu"; ns3.avm.de: "9.18.39-0ubuntu0.22.04.7-Ubuntu". 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 2026102100 · primary ns1.avm.de

Found

Primary (MNAME)
ns1.avm.de
Contact (RNAME)
admin.avm.de
Serial
2026102100
Refresh / retry
28800 s / 7200 s
Expire
1209600 s
Negative TTL
28800 s

Serial per nameserver

NameserverSerial
ns1.avm.de (212.42.244.66)2026102100
ns1.avm.de (2001:bf0:244:244::66)2026102100
ns2.avm.de (212.42.244.67)2026102100
ns2.avm.de (2001:bf0:244:244::67)2026102100
ns3.avm.de (212.42.224.68)2026102100
ns3.avm.de (2001:bf0:212::68)2026102100

Checks

  • ✓ Serial 2026102100 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 8h, retry 2h, expire 14d, negative TTL 8h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.avm.de is one of the listed nameservers.
  • ✓ Contact admin@avm.de #25
    The SOA RNAME admin.avm.de means admin@avm.de.
  • ✓ Date-based serial #26
    The serial 2026102100 follows the YYYYMMDDnn convention (2026-10-21).

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

24 records at the apex

Found

Read from
212.42.244.66:53
TypeValueTTL
SOAns1.avm.de. admin.avm.de. 2026102100 28800 7200 1209600 288003600
NSns2.avm.de.3600
NSns3.avm.de.3600
NSns1.avm.de.3600
A212.42.244.1223600
AAAA2001:bf0:244:244::1223600
MX5 mx1.avm.de.3600
MX5 mx3.avm.de.3600
MX5 mx2.avm.de.3600
TXT"apple-domain-verification=8EfGa1xAVcMrHrQY"3600
TXT"avm-test-3"3600
TXT"ca3-8b84375e54444d7c84ca0487586c9c47"3600
TXT"avm-test2"3600
TXT"2vbg25x44lm4hf8hx83bcrtvdqyx30vh"3600
TXT"MS=ms61937471"3600
TXT"langdock-verify=Zc-vH3gptEspcf85GDb_jw2QvGMYRlIXA22af3kZ8oY"3600
TXT"v=spf1 ip4:212.42.244.0/24 ip4:185.12.80.0/22 ip4:85.215.187.195" " ip6:2001:bf0:244:244::120 ip6:2001:bf0:244:244::119 ip6:2001:bf0:244:244::94" " ip6:2001:bf0:244:244::121 ip6:2001:bf0:244:244::71 ip6:2001:bf0:244:244::75" " ip4:46.163.119.15 ip6:2a01:488:66:1000:2ea3:770f:0:1 ip4:116.202.114.165 ip6:2a01:4f8:231:4252::2" " a:avm.shared3.montala.com a:news.avm.de a:mail.pi-asp.de" " include:mail.zendesk.com include:spf.lianamailer.com include:spf.mailjet.com include:spf.crsend.com" " include:spf.protection.outlook.com -all"3600
TXT"jetbrains-domain-verification=8tl4gc0lq8ck7gmwsamdmqddi"3600
TXT"google-site-verification=fPVB1OYwMIzcxV8-FSLB-TwJMi_4O_zHp01imxa2Ii4"3600
TXT"google-site-verification=-7YouZOjVgEjYrWWnngP3VliwEY8wDywSA1AV61riAo"3600
TXT"cea301c97f144dfd932cfdc82f84c640"3600
TXT"facebook-domain-verification=vrkjrvkwxlx41ock7bqn9vk26ernye"3600
TXT"MS=ms12404828"3600
TXT"google-site-verification=jPRpVXnccSamoUtteJIpat3API-ELDujuDIr73wJdrc"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, AAAA 1h, MX 1h, NS 1h. The NS TTL at the parent is 1d and in the zone 1h; 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