wivb.com

Checked 22 October 2026, 11:31 UTC · via 8.8.8.8
!Passed with warnings
24 passed 1 warning 0 failed 6 info

Registration

info

.com generic · CSC Corporate Domains, Inc. · expires 2026-12-11

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
CSC Corporate Domains, Inc.
Registered
12 December 1995
Last changed
7 December 2025
Expires
11 December 2026
Status
client transfer prohibited
Registry nameservers
pdns1.cscdns.net, pdns2.cscdns.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 2026-12-11 #3
    The registration is valid until 2026-12-11 (49 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

pdns1.cscdns.net, pdns2.cscdns.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
pdns1.cscdns.net, pdns2.cscdns.net
NS in the zone
pdns1.cscdns.net, pdns2.cscdns.net
NameserverAddressesNetwork (AS)Glue
pdns1.cscdns.net156.154.130.100 2610:a1:1022::100AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
pdns2.cscdns.net156.154.131.100 2610:a1:1023::100AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: pdns1.cscdns.net, pdns2.cscdns.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 different networks #10
    The nameservers are spread over 2 IPv4 /24s and 2 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS12008 (VERCARA - Vercara, LLC, US): 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

info

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
pdns1.cscdns.net 156.154.130.100NOERROR, 32 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns1.cscdns.net 2610:a1:1022::100NOERROR, 14 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns2.cscdns.net 156.154.131.100NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns2.cscdns.net 2610:a1:1023::100NOERROR, 4 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver

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: pdns1.cscdns.net: "UltraDNS Nameserver"; pdns2.cscdns.net: "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

pass

serial 2010031049 · primary pdns1.cscdns.net

Found

Primary (MNAME)
pdns1.cscdns.net
Contact (RNAME)
hostmaster.cscdns.net
Serial
2010031049
Refresh / retry
28800 s / 7200 s
Expire
604800 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
pdns1.cscdns.net (156.154.130.100)2010031049
pdns1.cscdns.net (2610:a1:1022::100)2010031049
pdns2.cscdns.net (156.154.131.100)2010031049
pdns2.cscdns.net (2610:a1:1023::100)2010031049

Checks

  • ✓ Serial 2010031049 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 8h, retry 2h, expire 7d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver pdns1.cscdns.net is one of the listed nameservers.
  • ✓ Contact hostmaster@cscdns.net #25
    The SOA RNAME hostmaster.cscdns.net means hostmaster@cscdns.net.
  • ✓ Date-based serial #26
    The serial 2010031049 follows the YYYYMMDDnn convention (2010-03-10).

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

14 records at the apex

Found

Read from
156.154.130.100:53
TypeValueTTL
SOApdns1.cscdns.net. hostmaster.cscdns.net. 2010031049 28800 7200 604800 8640086400
NSpdns1.cscdns.net.86400
NSpdns2.cscdns.net.86400
A151.101.65.9186400
A151.101.1.9186400
A151.101.129.9186400
A151.101.193.9186400
MX0 wivb-com.mail.protection.outlook.com.86400
TXT"v=spf1 include:spf.protection.outlook.com -all"86400
TXT"fastly-domain-delegation-jWdLPWrESKOh2EcdtFzb-653843"86400
TXT"facebook-domain-verification=qe4k3vugbd4yvlfbl5h4to8b1ecsw2"86400
TXT"google-site-verification=NGAx0vTuEHFg2EuU4Hsa9cRJMW4MlhHt8tOKn61V0Xo"86400
TXT"_globalsign-domain-verification=EwTwYoVjy1JmVGIrSNSyYTZngPdxG2oR8kULI3BHiI"86400
TXT"DKfNOG3n0n01jNXikAwMr8JVODHxG76mDgF89NHaNJVSHFJfsj990u9uq6f2laYvZ5wMYSCUMB4Ji7w8axOjWw=="86400

Checks

  • ✓ TTLs within range #32
    TTLs: A 1d, MX 1d, 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