free-av.de

Checked 21 October 2026, 22:31 UTC · via 8.8.8.8
!Passed with warnings
24 passed 1 warning 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

edns109.ultradns.biz, edns109.ultradns.com, edns109.ultradns.net, edns109.ultradns.org

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
edns109.ultradns.biz, edns109.ultradns.com, edns109.ultradns.net, edns109.ultradns.org
NS in the zone
edns109.ultradns.biz, edns109.ultradns.com, edns109.ultradns.net, edns109.ultradns.org
NameserverAddressesNetwork (AS)Glue
edns109.ultradns.biz204.74.67.109 2610:a1:1015::26dAS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
edns109.ultradns.com204.74.66.109 2001:502:f3ff::26dAS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
edns109.ultradns.net204.74.110.109 2610:a1:1014::26dAS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
edns109.ultradns.org204.74.111.109 2001:502:4612::26dAS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-

Checks

  • ✓ 4 nameservers #6
    Delegated to edns109.ultradns.biz, edns109.ultradns.com, edns109.ultradns.net, edns109.ultradns.org.
  • ✓ 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 4 IPv4 /24s and 4 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS12008 (VERCARA - Vercara, LLC, US): 8 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.
    #11
  • ✓ Nameserver names under 4 TLDs #12
    Nameserver names use the TLDs .biz, .com, .net, .org.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

info

8 of 8 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
edns109.ultradns.biz 204.74.67.109NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
edns109.ultradns.biz 2610:a1:1015::26dNOERROR, 4 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
edns109.ultradns.com 204.74.66.109NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
edns109.ultradns.com 2001:502:f3ff::26dNOERROR, 4 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
edns109.ultradns.net 204.74.110.109NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
edns109.ultradns.net 2610:a1:1014::26dNOERROR, 4 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
edns109.ultradns.org 204.74.111.109NOERROR, 13 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
edns109.ultradns.org 2001:502:4612::26dNOERROR, 29 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver

Checks

  • ✓ All respond #14
    All 8 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.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: edns109.ultradns.biz: "UltraDNS Nameserver"; edns109.ultradns.com: "UltraDNS Nameserver"; edns109.ultradns.net: "UltraDNS Nameserver"; edns109.ultradns.org: "UltraDNS Nameserver".
    #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 2022033002 · primary edns109.ultradns.com

Found

Primary (MNAME)
edns109.ultradns.com
Contact (RNAME)
domains.nortonlifelock.com
Serial
2022033002
Refresh / retry
21600 s / 7200 s
Expire
1209600 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
edns109.ultradns.biz (204.74.67.109)2022033002
edns109.ultradns.biz (2610:a1:1015::26d)2022033002
edns109.ultradns.com (204.74.66.109)2022033002
edns109.ultradns.com (2001:502:f3ff::26d)2022033002
edns109.ultradns.net (204.74.110.109)2022033002
edns109.ultradns.net (2610:a1:1014::26d)2022033002
edns109.ultradns.org (204.74.111.109)2022033002
edns109.ultradns.org (2001:502:4612::26d)2022033002

Checks

  • ✓ Serial 2022033002 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 6h, retry 2h, expire 14d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver edns109.ultradns.com is one of the listed nameservers.
  • ✓ Contact domains@nortonlifelock.com #25
    The SOA RNAME domains.nortonlifelock.com means domains@nortonlifelock.com.
  • ✓ Date-based serial #26
    The serial 2022033002 follows the YYYYMMDDnn convention (2022-03-30).

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

15 records at the apex

Found

Read from
204.74.67.109:53
TypeValueTTL
SOAedns109.ultradns.com. domains.nortonlifelock.com. 2022033002 21600 7200 1209600 8640086400
NSedns109.ultradns.biz.86400
NSedns109.ultradns.com.86400
NSedns109.ultradns.net.86400
NSedns109.ultradns.org.86400
TXT"v=spf1 -all"84600
CAA0 iodef "mailto:ca@avira.com"84600
CAA0 issue "awstrust.com"84600
CAA0 issue "digicert.com"84600
CAA0 issue "letsencrypt.org"84600
CAA0 issue "sectigo.com"84600
CAA0 issuewild "awstrust.com"84600
CAA0 issuewild "digicert.com"84600
CAA0 issuewild "letsencrypt.org"84600
CAA0 issuewild "sectigo.com"84600

Checks

  • ✓ TTLs within range #32
    TTLs: 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: awstrust.com, digicert.com, letsencrypt.org, sectigo.com.