icq.com

Checked 22 October 2026, 09:15 UTC · via 8.8.8.8
!Passed with warnings
22 passed 2 warnings 0 failed 7 info

Registration

info

.com generic · Regional Network Information Center, JSC dba RU-CENTER · expires 2027-11-17

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Regional Network Information Center, JSC dba RU-CENTER
Registered
29 December 1998
Last changed
18 October 2026
Expires
17 November 2027
Status
client transfer prohibited
Registry nameservers
ns1.mail.ru, ns2.mail.ru
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 2027-11-17 #3
    The registration is valid until 2027-11-17 (391 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

info

ns1.mail.ru, ns2.mail.ru

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns1.mail.ru, ns2.mail.ru
NS in the zone
ns1.mail.ru, ns2.mail.ru
NameserverAddressesNetwork (AS)Glue
ns1.mail.ru217.69.139.112 2a00:1148:db00::2AS47764 VK-AS - LLC VK, RU AS47764 VK-AS - LLC VK, RU-
ns2.mail.ru94.100.180.138 2a00:1148:db00::1AS47764 VK-AS - LLC VK, RU AS47764 VK-AS - LLC VK, RU-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.mail.ru, ns2.mail.ru.
    #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 2a00:1148:db00::/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 (AS47764 (VK-AS - LLC VK, 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 .ru
    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

info

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.mail.ru 217.69.139.112NOERROR, 54 ms, authoritativenoyes / yesrefusedTo be non-disclosed
ns1.mail.ru 2a00:1148:db00::2NOERROR, 53 ms, authoritativenoyes / yesrefusedTo be non-disclosed
ns2.mail.ru 94.100.180.138NOERROR, 54 ms, authoritativenoyes / yesrefusedTo be non-disclosed
ns2.mail.ru 2a00:1148:db00::1NOERROR, 49 ms, authoritativenoyes / yesrefusedTo be non-disclosed

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.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: ns1.mail.ru: "To be non-disclosed"; ns2.mail.ru: "To be non-disclosed".
    #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 3582577473 · primary ns1.mail.ru

Found

Primary (MNAME)
ns1.mail.ru
Contact (RNAME)
hostmaster.mail.ru
Serial
3582577473
Refresh / retry
14400 s / 3600 s
Expire
2592000 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
ns1.mail.ru (217.69.139.112)3582577473
ns1.mail.ru (2a00:1148:db00::2)3582577473
ns2.mail.ru (94.100.180.138)3582577473
ns2.mail.ru (2a00:1148:db00::1)3582577473

Checks

  • ✓ Serial 3582577473 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 4h, retry 1h, expire 30d, negative TTL 5m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.mail.ru is one of the listed nameservers.
  • ✓ Contact hostmaster@mail.ru #25
    The SOA RNAME hostmaster.mail.ru means hostmaster@mail.ru.
  • ✓ Timestamp serial #26
    The serial 3582577473 is a Unix timestamp (2083-07-12 00:24 UTC).

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

warn

18 records at the apex

Found

Read from
217.69.139.112:53
TypeValueTTL
SOAns1.mail.ru. hostmaster.mail.ru. 3582577473 14400 3600 2592000 300299
NSns2.mail.ru.300
NSns1.mail.ru.300
A95.163.61.100225
MX10 mxs.mail.ru.300
TXT"google-site-verification=q9b1n5U_lTCye5VmKKbbB9NexYs9g3MBqi0JliA_1IE"300
TXT"google-site-verification=XIGPrg4TSUcnPskViEjRYLUDFhT7Iem3BS7BiPVMI5I"300
TXT"google-site-verification=a2oGUBAsgK2O9m_47qgy-BeF8ByXSlLhO-E3OGOOB-w"300
TXT"_globalsign-domain-verification=FhUxYPFxOeONlaqyUjqM1vQXSHKelUYP8RXuWuS__f"300
TXT"HARICA-gTxrlvI41SepE4z7H4e"300
TXT"HARICA-yJxsBCgVownycfierNC"300
TXT"v=spf1 ip4:188.93.58.0/24 ip4:178.237.16.0/20 ip" "4:188.93.56.178 ip4:188.93.56.179 include:_spf.m" "ail.ru ~all"300
TXT"mailru-domain: ZGO8nMdkr0zwiEyI"300
CAA0 issue "harica.gr"300
CAA0 issuewild "harica.gr"300
CAA0 issuewild "letsencrypt.org"300
CAA0 issue "@"300
CAA0 issue "letsencrypt.org"300

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (3m45s). Low TTLs are useful just before a planned change. The NS TTL at the parent is 2d and in the zone 5m; resolvers may use either.
    #32
  • ✓ No CNAME at the apex #33
    The zone apex has no CNAME record.
  • i
    Wildcard record
    A random name under the zone resolves, so there is a wildcard (*) record. Typos and non-existent hosts resolve too, which can confuse mail and certificate checks.
    #34
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: harica.gr, letsencrypt.org, @.