npd.com

Checked 22 October 2026, 10:04 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 2027-01-28

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
CSC Corporate Domains, Inc.
Registered
27 January 1995
Last changed
12 January 2025
Expires
28 January 2027
Status
client transfer prohibited
Registry nameservers
pdns99.ultradns.biz, pdns99.ultradns.com, pdns99.ultradns.net, pdns99.ultradns.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 2027-01-28 #3
    The registration is valid until 2027-01-28 (97 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

pdns99.ultradns.biz, pdns99.ultradns.com, pdns99.ultradns.net, pdns99.ultradns.org

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
pdns99.ultradns.biz, pdns99.ultradns.com, pdns99.ultradns.net, pdns99.ultradns.org
NS in the zone
pdns99.ultradns.biz, pdns99.ultradns.com, pdns99.ultradns.net, pdns99.ultradns.org
NameserverAddressesNetwork (AS)Glue
pdns99.ultradns.biz156.154.66.99 2610:a1:1015::87AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
pdns99.ultradns.com156.154.64.99 2001:502:f3ff::87AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US156.154.64.99 2001:502:f3ff::87
pdns99.ultradns.net156.154.65.99 2610:a1:1014::87AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
pdns99.ultradns.org156.154.67.99 2001:502:4612::87AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-

Checks

  • ✓ 4 nameservers #6
    Delegated to pdns99.ultradns.biz, pdns99.ultradns.com, pdns99.ultradns.net, pdns99.ultradns.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.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS12008 (VERCARA - Vercara, LLC, US): 8 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.
    #11
  • ✓ Nameserver names under 4 TLDs #12
    Nameserver names use the TLDs .biz, .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
pdns99.ultradns.biz 156.154.66.99NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns99.ultradns.biz 2610:a1:1015::87NOERROR, 4 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns99.ultradns.com 156.154.64.99NOERROR, 18 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns99.ultradns.com 2001:502:f3ff::87NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns99.ultradns.net 156.154.65.99NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns99.ultradns.net 2610:a1:1014::87NOERROR, 4 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns99.ultradns.org 156.154.67.99NOERROR, 31 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns99.ultradns.org 2001:502:4612::87NOERROR, 31 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: pdns99.ultradns.biz: "UltraDNS Nameserver"; pdns99.ultradns.com: "UltraDNS Nameserver"; pdns99.ultradns.net: "UltraDNS Nameserver"; pdns99.ultradns.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 2015112271 · primary pdns99.ultradns.com

Found

Primary (MNAME)
pdns99.ultradns.com
Contact (RNAME)
hostmaster.npd.com
Serial
2015112271
Refresh / retry
7200 s / 600 s
Expire
86400 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
pdns99.ultradns.biz (156.154.66.99)2015112271
pdns99.ultradns.biz (2610:a1:1015::87)2015112271
pdns99.ultradns.com (156.154.64.99)2015112271
pdns99.ultradns.com (2001:502:f3ff::87)2015112271
pdns99.ultradns.net (156.154.65.99)2015112271
pdns99.ultradns.net (2610:a1:1014::87)2015112271
pdns99.ultradns.org (156.154.67.99)2015112271
pdns99.ultradns.org (2001:502:4612::87)2015112271

Checks

  • ✓ Serial 2015112271 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    expire 1d is shorter than 7d; secondaries stop answering too soon when the primary is down. Current values: refresh 2h, retry 10m, expire 1d, negative TTL 30m.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver pdns99.ultradns.com is one of the listed nameservers.
  • ✓ Contact hostmaster@npd.com #25
    The SOA RNAME hostmaster.npd.com means hostmaster@npd.com.
  • ✓ Date-based serial #26
    The serial 2015112271 follows the YYYYMMDDnn convention (2015-11-22).

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

22 records at the apex

Found

Read from
156.154.66.99:53
TypeValueTTL
SOApdns99.ultradns.com. hostmaster.npd.com. 2015112271 7200 600 86400 1800900
NSpdns99.ultradns.biz.86400
NSpdns99.ultradns.com.86400
NSpdns99.ultradns.net.86400
NSpdns99.ultradns.org.86400
A185.230.63.10710800
MX10 mxa-0010e901.gslb.pphosted.com.120
MX20 mxb-0010e901.gslb.pphosted.com.120
TXT"MS=ms52492543"600
TXT"ZA=F1MsX4m9IVVtPZQCfQvdbA=="600
TXT"_eruvogx9f0g6zs6m4cc711nccqh7ir5"600
TXT"g2jw3ls0h48fj6s5b9mfdlk53bcxyf1c"600
TXT"ZOOM_verify_xvy6PgXERyOxoHnp_MYfMA"600
TXT"meltwater_sso_20230511_TRITON-13742"600
TXT"apple-domain-verification=H03u0DhVwdUZEbF0"600
TXT"docusign=db8cc4fd-6691-454a-b3a7-7aa9ab1b86a8"600
TXT"rovag_verification_token=20BEC508A93D4DE69B8C673EF2DD7C8C "600
TXT"pardot16782=59d3bb04c874eb4ce1edf913bd2db2a0c457d59959443ad9b2bc8943a050bd1d"600
TXT"IKwU6dr6gQ3JiAFXyOV+5jsfa02MUAzvM1TOxFb+NCoQaZSm1nDXerD85dkk8sLfy5tNnOotWvgN9G1ZgSwWtQ=="600
TXT"MBpZ+1q3fwTAAo8K/pzNU1GakoMKQgo4+yC4nB76uBH0RNVNmP4CS0CkQWzw2atbP7ZlIMw38Wft/ZonsPo+mA=="600
TXT"atlassian-domain-verification=UdWLfifXndTkfNF0fpKRNd4tr96/cu1fVdGrzvR1nAPGK2HSOOaETaCe2QutwD9S"600
TXT"v=spf1 ip4:192.81.69.60 ip4:167.89.70.151 ip4:170.118.165.66 include:spf-0010e901.pphosted.com include:spf-0010e902.pphosted.com include:spf.protection.outlook.com include:spf.npd.com -all"600

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: MX (2m). Low TTLs are useful just before a planned change. The NS TTL at the parent is 2d and in the zone 1d; 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