znak.com

Checked 22 October 2026, 11:44 UTC · via 8.8.8.8
!Passed with warnings
22 passed 2 warnings 0 failed 7 info

Registration

info

.com generic · GoDaddy.com, LLC · expires 2030-05-23

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
GoDaddy.com, LLC
Registered
23 May 2003
Last changed
9 September 2024
Expires
23 May 2030
Status
active
Registry nameservers
dns1.yandex.net, dns2.yandex.net
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 2030-05-23 #3
    The registration is valid until 2030-05-23 (1309 days).
  • i
    No transfer lock
    The domain has no transfer lock (status: active). A registrar lock protects against unauthorized transfers.
    #4
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

info

dns1.yandex.net, dns2.yandex.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
dns1.yandex.net, dns2.yandex.net
NS in the zone
dns1.yandex.net, dns2.yandex.net
NameserverAddressesNetwork (AS)Glue
dns1.yandex.net213.180.204.213 2a02:6b8::213AS13238 YANDEX - YANDEX LLC, RU AS13238 YANDEX - YANDEX LLC, RU-
dns2.yandex.net93.158.134.213 2a02:6b8:0:1::213AS13238 YANDEX - YANDEX LLC, RU AS13238 YANDEX - YANDEX LLC, RU-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: dns1.yandex.net, dns2.yandex.net.
    #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.
  • i
    One address family in one network
    all IPv6 addresses are in 2a02:6b8::/48, while the other address family is spread over several networks.
    #10
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS13238 (YANDEX - YANDEX LLC, RU): 4 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 .net
    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

pass

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
dns1.yandex.net 213.180.204.213NOERROR, 44 ms, authoritativenoyes / yesrefused-
dns1.yandex.net 2a02:6b8::213NOERROR, 38 ms, authoritativenoyes / yesrefused-
dns2.yandex.net 93.158.134.213NOERROR, 41 ms, authoritativenoyes / yesrefused-
dns2.yandex.net 2a02:6b8:0:1::213NOERROR, 37 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 4 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.
  • ✓ No version disclosed #17
    The nameservers don't reveal their software version.
  • ✓ 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 192 · primary dns1.yandex.net

Found

Primary (MNAME)
dns1.yandex.net
Contact (RNAME)
dns-hosting.yandex.ru
Serial
192
Refresh / retry
900 s / 90 s
Expire
86400 s
Negative TTL
900 s

Serial per nameserver

NameserverSerial
dns1.yandex.net (213.180.204.213)192
dns1.yandex.net (2a02:6b8::213)192
dns2.yandex.net (93.158.134.213)192
dns2.yandex.net (2a02:6b8:0:1::213)192

Checks

  • ✓ Serial 192 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    refresh 15m is outside 20m–1d; expire 1d is shorter than 7d; secondaries stop answering too soon when the primary is down. Current values: refresh 15m, retry 1m30s, expire 1d, negative TTL 15m.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver dns1.yandex.net is one of the listed nameservers.
  • ✓ Contact dns-hosting@yandex.ru #25
    The SOA RNAME dns-hosting.yandex.ru means dns-hosting@yandex.ru.
  • ✓ Counter serial #26
    The serial 192 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

10 records at the apex

Found

Read from
213.180.204.213:53
TypeValueTTL
SOAdns1.yandex.net. dns-hosting.yandex.ru. 192 900 90 86400 900900
NSdns1.yandex.net.900
NSdns2.yandex.net.900
A151.80.194.1523600
AAAA2001:41d0:403:4276:151:80:194:1523600
MX10 mail.protonmail.ch.1800
MX20 mailsec.protonmail.ch.1800
TXT"ls02g2kz0mqg8xc1j22dgl5sm4nb380l"3600
TXT"protonmail-verification=41d973a0a73e17489f1d1aa173ad7ba99b0dde4c"1800
TXT"v=spf1 include:_spf.protonmail.ch ~all"1800

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, AAAA 1h, MX 30m, NS 15m. The NS TTL at the parent is 2d and in the zone 15m; 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