zimbio.com

Checked 22 October 2026, 11:43 UTC · via 8.8.8.8
!Passed with warnings
22 passed 4 warnings 0 failed 5 info

Registration

info

.com generic · NameCheap, Inc. · expires 2031-12-02

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
NameCheap, Inc.
Registered
2 December 2005
Last changed
4 September 2026
Expires
2 December 2031
Status
client transfer prohibited
Registry nameservers
ns1.dnsparks.net, ns2.dnsparks.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 2031-12-02 #3
    The registration is valid until 2031-12-02 (1866 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.dnsparks.net, ns2.dnsparks.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns1.dnsparks.net, ns2.dnsparks.net
NS in the zone
ns1.dnsparks.net, ns2.dnsparks.net
NameserverAddressesNetwork (AS)Glue
ns1.dnsparks.net54.39.100.162AS16276 OVH - OVH SAS, FR-
ns2.dnsparks.net54.39.100.162AS16276 OVH - OVH SAS, FR-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.dnsparks.net, ns2.dnsparks.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.
  • !
    Nameservers in one network
    all IPv4 addresses are in 54.39.100.0/24. A single network failure takes all nameservers down; RFC 2182 recommends topologically separate networks (anycast setups are an exception).
    #10
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS16276 (OVH - OVH SAS, FR): 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 .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
  • !
    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.dnsparks.net 54.39.100.162NOERROR, 96 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 5.1.4 (built Aug 10 2026 00:00:00 by root@bh-centos-10.dev.cpanel.net)
ns2.dnsparks.net 54.39.100.162NOERROR, 95 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 5.1.4 (built Aug 10 2026 00:00:00 by root@bh-centos-10.dev.cpanel.net)

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.dnsparks.net: "PowerDNS Authoritative Server 5.1.4 (built Aug 10 2026 00:00:00 by root@bh-centos-10.dev.cpanel.net)"; ns2.dnsparks.net: "PowerDNS Authoritative Server 5.1.4 (built Aug 10 2026 00:00:00 by root@bh-centos-10.dev.cpanel.net)". 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 2026090501 · primary ns1.dnsparks.net

Found

Primary (MNAME)
ns1.dnsparks.net
Contact (RNAME)
root.54-39-100-162.cprapid.com
Serial
2026090501
Refresh / retry
3600 s / 1800 s
Expire
1209600 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns1.dnsparks.net (54.39.100.162)2026090501
ns2.dnsparks.net (54.39.100.162)2026090501

Checks

  • ✓ Serial 2026090501 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1h, retry 30m, expire 14d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.dnsparks.net is one of the listed nameservers.
  • ✓ Contact root@54-39-100-162.cprapid.com #25
    The SOA RNAME root.54-39-100-162.cprapid.com means root@54-39-100-162.cprapid.com.
  • ✓ Date-based serial #26
    The serial 2026090501 follows the YYYYMMDDnn convention (2026-09-05).

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

6 records at the apex

Found

Read from
54.39.100.162:53
TypeValueTTL
SOAns1.dnsparks.net. root.54-39-100-162.cprapid.com. 2026090501 3600 1800 1209600 8640086400
NSns2.dnsparks.net.86400
NSns1.dnsparks.net.86400
A54.39.100.16214400
MX0 zimbio.com.14400
TXT"v=spf1 +a +mx +ip4:54.39.100.162 ~all"14400

Checks

  • ✓ TTLs within range #32
    TTLs: A 4h, MX 4h, NS 1d. The NS TTL at the parent is 2d and in the zone 1d; 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