plantronics.com

Checked 22 October 2026, 10:14 UTC · via 8.8.8.8
!Passed with warnings
23 passed 4 warnings 0 failed 4 info

Registration

info

.com generic · MarkMonitor Inc. · expires 2027-07-31

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
MarkMonitor Inc.
Registered
1 August 1995
Last changed
29 June 2026
Expires
31 July 2027
Status
client delete prohibited, client transfer prohibited, client update prohibited
Registry nameservers
ns1.hp.com, ns2.hp.com, ns3.hp.com, ns4.hp.com, ns5.hp.com, ns6.hp.com
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 2027-07-31 #3
    The registration is valid until 2027-07-31 (281 days).
  • ✓ Transfer locked #4
    Registry status: client delete prohibited, client transfer prohibited, client update prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

warn

ns1.hp.com, ns2.hp.com, ns3.hp.com, ns4.hp.com, ns5.hp.com, ns6.hp.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns1.hp.com, ns2.hp.com, ns3.hp.com, ns4.hp.com, ns5.hp.com, ns6.hp.com
NS in the zone
ns1.hp.com, ns2.hp.com, ns3.hp.com, ns4.hp.com, ns5.hp.com, ns6.hp.com
NameserverAddressesNetwork (AS)Glue
ns1.hp.com15.72.96.180AS54680 HPINC - HP Inc., US15.72.96.180
ns2.hp.com15.72.32.180AS54680 HPINC - HP Inc., US15.72.32.180
ns3.hp.com15.90.180.180AS2155 HPINC - HP Inc., US15.90.180.180
ns4.hp.com15.90.164.180AS2154 HPINC - HP Inc., US15.90.164.180
ns5.hp.com15.89.160.180AS25888 HPINC - HP Inc., US15.89.160.180
ns6.hp.com15.89.164.180AS25888 HPINC - HP Inc., US15.89.164.180

Checks

  • ✓ 6 nameservers #6
    Delegated to ns1.hp.com, ns2.hp.com, ns3.hp.com, ns4.hp.com, ns5.hp.com, ns6.hp.com.
  • ✓ 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 6 IPv4 /24s and 0 IPv6 /48s.
  • ✓ 4 autonomous systems #11
    The nameservers are spread over: AS2154 (HPINC - HP Inc., US): 1 address; AS2155 (HPINC - HP Inc., US): 1 address; AS25888 (HPINC - HP Inc., US): 2 addresses; AS54680 (HPINC - HP Inc., US): 2 addresses.
  • i
    All nameserver names under .com
    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

pass

6 of 6 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.hp.com 15.72.96.180NOERROR, 131 ms, authoritativenoyes / yesrefused-
ns2.hp.com 15.72.32.180NOERROR, 140 ms, authoritativenoyes / yesrefused-
ns3.hp.com 15.90.180.180NOERROR, 12 ms, authoritativenoyes / yesrefused-
ns4.hp.com 15.90.164.180NOERROR, 12 ms, authoritativenoyes / yesrefused-
ns5.hp.com 15.89.160.180NOERROR, 242 ms, authoritativenoyes / yesrefused-
ns6.hp.com 15.89.164.180NOERROR, 273 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 6 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.
  • ✓ No version disclosed #17
    The nameservers don't reveal their software version.
  • ✓ 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 316 · primary txa01hpiibpe.ams.hp.net

Found

Primary (MNAME)
txa01hpiibpe.ams.hp.net
Contact (RNAME)
hostmaster.hp.com
Serial
316
Refresh / retry
3600 s / 3600 s
Expire
2419200 s
Negative TTL
900 s

Serial per nameserver

NameserverSerial
ns1.hp.com (15.72.96.180)316
ns2.hp.com (15.72.32.180)316
ns3.hp.com (15.90.180.180)316
ns4.hp.com (15.90.164.180)316
ns5.hp.com (15.89.160.180)316
ns6.hp.com (15.89.164.180)316

Checks

  • ✓ Serial 316 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    retry 1h should be shorter than refresh 1h. Current values: refresh 1h, retry 1h, expire 28d, negative TTL 15m.
    #23
  • i
    Hidden master
    The primary nameserver txa01hpiibpe.ams.hp.net 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 hostmaster@hp.com #25
    The SOA RNAME hostmaster.hp.com means hostmaster@hp.com.
  • ✓ Counter serial #26
    The serial 316 is a plain counter.

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

13 records at the apex

Found

Read from
15.72.96.180:53
TypeValueTTL
SOAtxa01hpiibpe.ams.hp.net. hostmaster.hp.com. 316 3600 3600 2419200 9003600
NSns3.hp.com.3600
NSns4.hp.com.3600
NSns5.hp.com.3600
NSns1.hp.com.3600
NSns2.hp.com.3600
NSns6.hp.com.3600
A104.94.68.13020
MX10 us-smtp-inbound-1.mimecast.com.3600
MX20 us-smtp-inbound-2.mimecast.com.3600
TXT"v=spf1 include:_spf-a.plantronics.com include:_spf-b.plantronics.com -all"3600
TXT"docusign=21d5bb2d-fb3c-454c-b826-d1a68993dd9d"3600
TXT"docusign=7552a6ac-61ea-498e-aa44-88479cb31b66"3600

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (20s). 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