kbb.com

Checked 22 October 2026, 09:31 UTC · via 8.8.8.8
!Passed with warnings
24 passed 3 warnings 0 failed 4 info

Registration

info

.com generic · CSC Corporate Domains, Inc. · expires 2027-04-03

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
CSC Corporate Domains, Inc.
Registered
5 August 1995
Last changed
30 March 2026
Expires
3 April 2027
Status
client transfer prohibited, server delete prohibited, server transfer prohibited, server update prohibited
Registry nameservers
edns3.ultradns.com, edns3.ultradns.net, ns52.ultradns2.com, ns52.ultradns2.org
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 2027-04-03 #3
    The registration is valid until 2027-04-03 (163 days).
  • ✓ Transfer locked #4
    Registry status: client transfer prohibited, server delete prohibited, server transfer prohibited, server update prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

pass

edns3.ultradns.com, edns3.ultradns.net, ns52.ultradns2.com, ns52.ultradns2.org

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
edns3.ultradns.com, edns3.ultradns.net, ns52.ultradns2.com, ns52.ultradns2.org
NS in the zone
edns3.ultradns.com, edns3.ultradns.net, ns52.ultradns2.com, ns52.ultradns2.org
NameserverAddressesNetwork (AS)Glue
edns3.ultradns.com204.74.66.3 2001:502:f3ff::203AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US2001:502:f3ff::203 204.74.66.3
edns3.ultradns.net204.74.110.3 2610:a1:1014::203AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
ns52.ultradns2.com204.74.104.52 2610:a1:3134::53AS399153 SECURITYSERVICES - Vercara, LLC, US AS399155 SECURITYSERVICES - Vercara, LLC, US204.74.104.52 2610:a1:3134::53
ns52.ultradns2.org204.74.106.52 2610:a1:3234::53AS399154 SECURITYSERVICES - Vercara, LLC, US AS399154 SECURITYSERVICES - Vercara, LLC, US-

Checks

  • ✓ 4 nameservers #6
    Delegated to edns3.ultradns.com, edns3.ultradns.net, ns52.ultradns2.com, ns52.ultradns2.org.
  • ✓ 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 different networks #10
    The nameservers are spread over 4 IPv4 /24s and 4 IPv6 /48s.
  • ✓ 4 autonomous systems #11
    The nameservers are spread over: AS12008 (VERCARA - Vercara, LLC, US): 4 addresses; AS399153 (SECURITYSERVICES - Vercara, LLC, US): 1 address; AS399154 (SECURITYSERVICES - Vercara, LLC, US): 2 addresses; AS399155 (SECURITYSERVICES - Vercara, LLC, US): 1 address.
  • ✓ Nameserver names under 3 TLDs #12
    Nameserver names use the TLDs .com, .net, .org.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

info

8 of 8 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
edns3.ultradns.com 204.74.66.3NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
edns3.ultradns.com 2001:502:f3ff::203NOERROR, 4 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
edns3.ultradns.net 204.74.110.3NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
edns3.ultradns.net 2610:a1:1014::203NOERROR, 4 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
ns52.ultradns2.com 204.74.104.52NOERROR, 4 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
ns52.ultradns2.com 2610:a1:3134::53NOERROR, 4 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
ns52.ultradns2.org 204.74.106.52NOERROR, 14 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
ns52.ultradns2.org 2610:a1:3234::53NOERROR, 14 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver

Checks

  • ✓ All respond #14
    All 8 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: edns3.ultradns.com: "UltraDNS Nameserver"; edns3.ultradns.net: "UltraDNS Nameserver"; ns52.ultradns2.com: "UltraDNS Nameserver"; ns52.ultradns2.org: "UltraDNS Nameserver".
    #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 2014053603 · primary pdns164.ultradns.com

Found

Primary (MNAME)
pdns164.ultradns.com
Contact (RNAME)
ei.kbb.com
Serial
2014053603
Refresh / retry
600 s / 600 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
edns3.ultradns.com (204.74.66.3)2014053603
edns3.ultradns.com (2001:502:f3ff::203)2014053603
edns3.ultradns.net (204.74.110.3)2014053603
edns3.ultradns.net (2610:a1:1014::203)2014053603
ns52.ultradns2.com (204.74.104.52)2014053603
ns52.ultradns2.com (2610:a1:3134::53)2014053603
ns52.ultradns2.org (204.74.106.52)2014053603
ns52.ultradns2.org (2610:a1:3234::53)2014053603

Checks

  • ✓ Serial 2014053603 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    refresh 10m is outside 20m–1d; retry 10m should be shorter than refresh 10m. Current values: refresh 10m, retry 10m, expire 7d, negative TTL 30m.
    #23
  • i
    Hidden master
    The primary nameserver pdns164.ultradns.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 ei@kbb.com #25
    The SOA RNAME ei.kbb.com means ei@kbb.com.
  • ✓ Timestamp serial #26
    The serial 2014053603 is a Unix timestamp (2033-10-27 19:20 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

23 records at the apex

Found

Read from
204.74.66.3:53
TypeValueTTL
SOApdns164.ultradns.com. ei.kbb.com. 2014053603 600 600 604800 18003600
NSns52.ultradns2.com.3600
NSns52.ultradns2.org.3600
NSedns3.ultradns.com.3600
NSedns3.ultradns.net.3600
A2.23.227.15916
A2.23.227.14616
MX5 mxa-0028a403.gslb.pphosted.com.300
MX5 mxb-0028a403.gslb.pphosted.com.300
MX10 mx0a-0028a403.pphosted.com.300
MX10 mx0b-0028a403.pphosted.com.300
TXT"MS=ms38902178"300
TXT"MS=ms61587206"300
TXT"_6agrdbzdljt89hf2lnjbrlxoo7rj205"300
TXT"_bokcoy8xwys1sk5tgg8x4s7m7vxs6r5"300
TXT"_mcyzvt8lxvxcj2ue3zffm0pn4t0x3pj"300
TXT"_v04w9cldqa3xrryqzwidwbacpnuq8dk"300
TXT"facebook-domain-verification=awkcs72xxk3govaajigvurt6zh6rpq"300
TXT"google-site-verification=aaetCUWYeQGI5zzWEvU4AhnMa8B0EDp9XZe6ZMTGIRM"300
TXT"google-site-verification=uRPY04UkIrucvdsvQjwdaFJKlPZTRD7ogmnbCKUwiB4"300
TXT"apple-domain-verification=t2aeCF71Q5C8REYtzPC_aZ9OIz9RZL1z49KiTl3an0g"300
TXT"osKT3PaV06BKUCCyqIDjD2B9R0kKsIboqEMhQ0CQ01OT3sLvWK6QAX/TQg+1Ra0/gzvBQ3gjNAGFr/2qu+bFVg=="300
TXT"v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com include:spf.protection.outlook.com ~all"300

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (16s). Low TTLs are useful just before a planned change. The NS TTL at the parent is 2d and in the zone 1h; resolvers may use either.
    #32
  • ✓ 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