ixbt.com

Checked 22 October 2026, 09:22 UTC · via 8.8.8.8
!Passed with warnings
27 passed 3 warnings 0 failed 1 info

Registration

info

.com generic · Regional Network Information Center, JSC dba RU-CENTER · expires 2027-06-14

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Regional Network Information Center, JSC dba RU-CENTER
Registered
15 June 1998
Last changed
22 April 2026
Expires
14 June 2027
Status
client transfer prohibited
Registry nameservers
ns1.ixbt.com, ns4-cloud.nic.ru, ns4-l2.nic.ru, ns8-cloud.nic.ru, ns8-l2.nic.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 2027-06-14 #3
    The registration is valid until 2027-06-14 (234 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.ixbt.com, ns4-cloud.nic.ru, ns4-l2.nic.ru, ns8-cloud.nic.ru, ns8-l2.nic.ru

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns1.ixbt.com, ns4-cloud.nic.ru, ns4-l2.nic.ru, ns8-cloud.nic.ru, ns8-l2.nic.ru
NS in the zone
ns1.ixbt.com, ns4-cloud.nic.ru, ns4-l2.nic.ru, ns8-cloud.nic.ru, ns8-l2.nic.ru
NameserverAddressesNetwork (AS)Glue
ns1.ixbt.com91.208.42.70AS47577 IXBT-AS - Pravilnyy khosting Ltd, RU91.208.42.70
ns4-cloud.nic.ru89.104.93.33 89.104.95.30 89.104.93.30 89.104.93.34 89.104.95.34 89.104.95.33AS43489 ANYCAST-AS - JSC _RU-CENTER_, RU AS43489 ANYCAST-AS - JSC _RU-CENTER_, RU AS43489 ANYCAST-AS - JSC _RU-CENTER_, RU AS43489 ANYCAST-AS - JSC _RU-CENTER_, RU AS43489 ANYCAST-AS - JSC _RU-CENTER_, RU AS43489 ANYCAST-AS - JSC _RU-CENTER_, RU-
ns4-l2.nic.ru91.217.20.20AS48287 RU-CENTER - JSC _RU-CENTER_, RU-
ns8-cloud.nic.ru89.104.95.35 89.104.93.35 89.104.95.31 89.104.95.36 89.104.93.36 89.104.93.31AS43489 ANYCAST-AS - JSC _RU-CENTER_, RU AS43489 ANYCAST-AS - JSC _RU-CENTER_, RU AS43489 ANYCAST-AS - JSC _RU-CENTER_, RU AS43489 ANYCAST-AS - JSC _RU-CENTER_, RU AS43489 ANYCAST-AS - JSC _RU-CENTER_, RU AS43489 ANYCAST-AS - JSC _RU-CENTER_, RU-
ns8-l2.nic.ru91.217.21.20AS39494 RU-CENTER-AS - JSC _RU-CENTER_, RU-

Checks

  • ✓ 5 nameservers #6
    Delegated to ns1.ixbt.com, ns4-cloud.nic.ru, ns4-l2.nic.ru, ns8-cloud.nic.ru, ns8-l2.nic.ru.
  • ✓ 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.ixbt.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 5 IPv4 /24s and 0 IPv6 /48s.
  • ✓ 4 autonomous systems #11
    The nameservers are spread over: AS39494 (RU-CENTER-AS - JSC _RU-CENTER_, RU): 1 address; AS43489 (ANYCAST-AS - JSC _RU-CENTER_, RU): 12 addresses; AS47577 (IXBT-AS - Pravilnyy khosting Ltd, RU): 1 address; AS48287 (RU-CENTER - JSC _RU-CENTER_, RU): 1 address.
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .com, .ru.
  • !
    No IPv6
    None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.
    #13

Nameservers

warn

15 of 15 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.ixbt.com 91.208.42.70NOERROR, 46 ms, authoritativenoyes / yesrefusedunknown
ns4-cloud.nic.ru 89.104.93.33NOERROR, 55 ms, authoritativenoyes / yesrefusedREGRU-DNS 0.4.2
ns4-cloud.nic.ru 89.104.95.30NOERROR, 55 ms, authoritativenoyes / yesrefusedREGRU-DNS 0.4.2
ns4-cloud.nic.ru 89.104.93.30NOERROR, 55 ms, authoritativenoyes / yesrefusedREGRU-DNS 0.4.2
ns4-cloud.nic.ru 89.104.93.34NOERROR, 53 ms, authoritativenoyes / yesrefusedREGRU-DNS 0.4.2
ns4-cloud.nic.ru 89.104.95.34NOERROR, 52 ms, authoritativenoyes / yesrefusedREGRU-DNS 0.4.2
ns4-cloud.nic.ru 89.104.95.33NOERROR, 55 ms, authoritativenoyes / yesrefusedREGRU-DNS 0.4.2
ns4-l2.nic.ru 91.217.20.20NOERROR, 49 ms, authoritativenoyes / yesrefusedKnot DNS 3.3.4
ns8-cloud.nic.ru 89.104.95.35NOERROR, 55 ms, authoritativenoyes / yesrefusedREGRU-DNS 0.4.2
ns8-cloud.nic.ru 89.104.93.35NOERROR, 56 ms, authoritativenoyes / yesrefusedREGRU-DNS 0.4.2
ns8-cloud.nic.ru 89.104.95.31NOERROR, 53 ms, authoritativenoyes / yesrefusedREGRU-DNS 0.4.2
ns8-cloud.nic.ru 89.104.95.36NOERROR, 56 ms, authoritativenoyes / yesrefusedREGRU-DNS 0.4.2
ns8-cloud.nic.ru 89.104.93.36NOERROR, 56 ms, authoritativenoyes / yesrefusedREGRU-DNS 0.4.2
ns8-cloud.nic.ru 89.104.93.31NOERROR, 52 ms, authoritativenoyes / yesrefusedREGRU-DNS 0.4.2
ns8-l2.nic.ru 91.217.21.20NOERROR, 55 ms, authoritativenoyes / yesrefusedKnot DNS 3.3.4

Checks

  • ✓ All respond #14
    All 15 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: ns4-cloud.nic.ru: "REGRU-DNS 0.4.2"; ns4-l2.nic.ru: "Knot DNS 3.3.4"; ns8-cloud.nic.ru: "REGRU-DNS 0.4.2"; ns8-l2.nic.ru: "Knot DNS 3.3.4". 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 2026060101 · primary ns1.ixbt.com

Found

Primary (MNAME)
ns1.ixbt.com
Contact (RNAME)
hostmaster.ixbt.com
Serial
2026060101
Refresh / retry
7200 s / 3600 s
Expire
1209600 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
ns1.ixbt.com (91.208.42.70)2026060101
ns4-cloud.nic.ru (89.104.93.33)2026060101
ns4-cloud.nic.ru (89.104.95.30)2026060101
ns4-cloud.nic.ru (89.104.93.30)2026060101
ns4-cloud.nic.ru (89.104.93.34)2026060101
ns4-cloud.nic.ru (89.104.95.34)2026060101
ns4-cloud.nic.ru (89.104.95.33)2026060101
ns4-l2.nic.ru (91.217.20.20)2026060101
ns8-cloud.nic.ru (89.104.95.35)2026060101
ns8-cloud.nic.ru (89.104.93.35)2026060101
ns8-cloud.nic.ru (89.104.95.31)2026060101
ns8-cloud.nic.ru (89.104.95.36)2026060101
ns8-cloud.nic.ru (89.104.93.36)2026060101
ns8-cloud.nic.ru (89.104.93.31)2026060101
ns8-l2.nic.ru (91.217.21.20)2026060101

Checks

  • ✓ Serial 2026060101 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h, retry 1h, expire 14d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.ixbt.com is one of the listed nameservers.
  • ✓ Contact hostmaster@ixbt.com #25
    The SOA RNAME hostmaster.ixbt.com means hostmaster@ixbt.com.
  • ✓ Date-based serial #26
    The serial 2026060101 follows the YYYYMMDDnn convention (2026-06-01).

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

12 records at the apex

Found

Read from
91.208.42.70:53
TypeValueTTL
SOAns1.ixbt.com. hostmaster.ixbt.com. 2026060101 7200 3600 1209600 360028800
NSns8-cloud.nic.ru.28800
NSns4-l2.nic.ru.28800
NSns8-l2.nic.ru.28800
NSns4-cloud.nic.ru.28800
NSns1.ixbt.com.28800
A91.208.42.6728800
MX50 pbox.ixbt.com.28800
TXT"google-site-verification=LpkghT7CEQnfEXOeBo3fzC4WihyTwm5HkNHEmSMfJaM"28800
TXT"v=spf1 ip4:91.208.42.64/26 include:spf.mandrillapp.com ~all"28800
CAA0 issuewild ";"28800
CAA0 issue "letsencrypt.org"28800

Checks

  • ✓ TTLs within range #32
    TTLs: A 8h, MX 8h, NS 8h. The NS TTL at the parent is 2d and in the zone 8h; 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.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: none (issuance forbidden), letsencrypt.org.