otzovik.com

Checked 22 October 2026, 10:10 UTC · via 8.8.8.8
!Passed with warnings
21 passed 4 warnings 0 failed 6 info

Registration

info

.com generic · Regtime Ltd. · expires 2027-03-30

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Regtime Ltd.
Registered
30 March 2010
Last changed
7 February 2026
Expires
30 March 2027
Status
client transfer prohibited
Registry nameservers
ns1.otzovik.com, ns2.otzovik.com
RDAP server
https://rdap.verisign.com/com/v1/

Checks

  • i
    .com is a generic TLD (gTLD)
    Generic TLD under an ICANN registry agreement: ICANN-accredited registrars, UDRP and RDAP apply.
    #1
  • ✓ TLD delegated and signed #2
    .com is delegated in the root zone and DNSSEC-signed.
  • ✓ Expires on 2027-03-30 #3
    The registration is valid until 2027-03-30 (158 days).
  • ✓ Transfer locked #4
    Registry status: client transfer prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

warn

ns1.otzovik.com, ns2.otzovik.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns1.otzovik.com, ns2.otzovik.com
NS in the zone
ns1.otzovik.com, ns2.otzovik.com
NameserverAddressesNetwork (AS)Glue
ns1.otzovik.com77.105.172.97AS50340 SELECTEL-MSK - JSC Selectel, RU77.105.172.97
ns2.otzovik.com185.55.57.120AS50340 SELECTEL-MSK - JSC Selectel, RU185.55.57.120

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.otzovik.com, ns2.otzovik.com.
    #6
  • ✓ 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.otzovik.com, ns2.otzovik.com.
  • ✓ 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 (AS50340 (SELECTEL-MSK - JSC Selectel, RU): 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 .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
  • !
    No IPv6
    None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.
    #13

Nameservers

warn

2 of 2 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.otzovik.com 77.105.172.97NOERROR, 50 ms, authoritativenoyes / yesrefused9.18.39-0ubuntu0.22.04.7-Ubuntu
ns2.otzovik.com 185.55.57.120NOERROR, 52 ms, authoritativenoyes / yesrefused9.18.39-0ubuntu0.24.04.8-Ubuntu

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: ns1.otzovik.com: "9.18.39-0ubuntu0.22.04.7-Ubuntu"; ns2.otzovik.com: "9.18.39-0ubuntu0.24.04.8-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

warn

serial 733 · primary otzovik.com

Found

Primary (MNAME)
otzovik.com
Contact (RNAME)
root.otzovik.com
Serial
733
Refresh / retry
60 s / 600 s
Expire
604800 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
ns1.otzovik.com (77.105.172.97)733
ns2.otzovik.com (185.55.57.120)733

Checks

  • ✓ Serial 733 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    refresh 1m is outside 20m–1d; retry 10m should be shorter than refresh 1m. Current values: refresh 1m, retry 10m, expire 7d, negative TTL 5m.
    #23
  • i
    Hidden master
    The primary nameserver otzovik.com is not listed as a nameserver: a hidden master that only feeds the public secondaries. That is a common setup; make sure it is not reachable for zone transfers from outside.
    #24
  • ✓ Contact root@otzovik.com #25
    The SOA RNAME root.otzovik.com means root@otzovik.com.
  • ✓ Counter serial #26
    The serial 733 is a plain counter.

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

7 records at the apex

Found

Read from
77.105.172.97:53
TypeValueTTL
SOAotzovik.com. root.otzovik.com. 733 60 600 604800 300600
NSns2.otzovik.com.600
NSns1.otzovik.com.600
A31.41.158.200600
MX20 sendmail.otzovik.com.600
MX10 mx.yandex.net.600
TXT"v=spf1 ip4:185.194.107.115 a mx include:_spf.yandex.net ~all"600

Checks

  • ✓ TTLs within range #32
    TTLs: A 10m, MX 10m, NS 10m. The NS TTL at the parent is 2d and in the zone 10m; 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