nissanusa.com

Checked 22 October 2026, 10:03 UTC · via 8.8.8.8
!Passed with warnings
25 passed 2 warnings 0 failed 4 info

Registration

info

.com generic · MarkMonitor Inc. · expires 2027-06-30

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
MarkMonitor Inc.
Registered
30 June 2001
Last changed
29 May 2026
Expires
30 June 2027
Status
client delete prohibited, client transfer prohibited, client update prohibited
Registry nameservers
edns2.ultradns.biz, edns2.ultradns.com, edns2.ultradns.net, edns2.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 2027-06-30 #3
    The registration is valid until 2027-06-30 (251 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

info

edns2.ultradns.biz, edns2.ultradns.com, edns2.ultradns.net, edns2.ultradns.org

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
edns2.ultradns.biz, edns2.ultradns.com, edns2.ultradns.net, edns2.ultradns.org
NS in the zone
edns2.ultradns.biz, edns2.ultradns.com, edns2.ultradns.net, edns2.ultradns.org
NameserverAddressesNetwork (AS)Glue
edns2.ultradns.biz204.74.67.2 2610:a1:1015::202AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
edns2.ultradns.com204.74.66.2 2001:502:f3ff::202AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US2001:502:f3ff::202 204.74.66.2
edns2.ultradns.net204.74.110.2 2610:a1:1014::202AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
edns2.ultradns.org204.74.111.2 2001:502:4612::202AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-

Checks

  • ✓ 4 nameservers #6
    Delegated to edns2.ultradns.biz, edns2.ultradns.com, edns2.ultradns.net, edns2.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
edns2.ultradns.biz 204.74.67.2NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
edns2.ultradns.biz 2610:a1:1015::202NOERROR, 4 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
edns2.ultradns.com 204.74.66.2NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
edns2.ultradns.com 2001:502:f3ff::202NOERROR, 4 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
edns2.ultradns.net 204.74.110.2NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
edns2.ultradns.net 2610:a1:1014::202NOERROR, 4 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
edns2.ultradns.org 204.74.111.2NOERROR, 13 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
edns2.ultradns.org 2001:502:4612::202NOERROR, 32 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: edns2.ultradns.biz: "UltraDNS Nameserver"; edns2.ultradns.com: "UltraDNS Nameserver"; edns2.ultradns.net: "UltraDNS Nameserver"; edns2.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

pass

serial 2283086780 · primary edns2.ultradns.com

Found

Primary (MNAME)
edns2.ultradns.com
Contact (RNAME)
support.ultradns.com
Serial
2283086780
Refresh / retry
28800 s / 7200 s
Expire
1209600 s
Negative TTL
900 s

Serial per nameserver

NameserverSerial
edns2.ultradns.biz (204.74.67.2)2283086780
edns2.ultradns.biz (2610:a1:1015::202)2283086780
edns2.ultradns.com (204.74.66.2)2283086780
edns2.ultradns.com (2001:502:f3ff::202)2283086780
edns2.ultradns.net (204.74.110.2)2283086780
edns2.ultradns.net (2610:a1:1014::202)2283086780
edns2.ultradns.org (204.74.111.2)2283086780
edns2.ultradns.org (2001:502:4612::202)2283086780

Checks

  • ✓ Serial 2283086780 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 8h, retry 2h, expire 14d, negative TTL 15m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver edns2.ultradns.com is one of the listed nameservers.
  • ✓ Contact support@ultradns.com #25
    The SOA RNAME support.ultradns.com means support@ultradns.com.
  • ✓ Timestamp serial #26
    The serial 2283086780 is a Unix timestamp (2042-05-07 14:46 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

18 records at the apex

Found

Read from
204.74.67.2:53
TypeValueTTL
SOAedns2.ultradns.com. support.ultradns.com. 2283086780 28800 7200 1209600 9007200
NSedns2.ultradns.biz.86400
NSedns2.ultradns.com.86400
NSedns2.ultradns.net.86400
NSedns2.ultradns.org.86400
A23.11.206.11216
TXT"_acme-challenge.nissanusa.com."7200
TXT"0szg06ln28h35jplxbs6w89xzqw44ddv"7200
TXT"_9argoomrhimcxcnja2llmj2hzssc00z"7200
TXT"km3yf0dsrb3gw1nl45f7wr8q31w4mpz1"7200
TXT"plblytng9rk43ghjlzttr10nvnfghbsp"7200
TXT"did=did:plc:dsy3repwddwiewptorjnel4f"7200
TXT"amazonses:liCrceIKffNKnE1Q+5IRmAkY1F530C9PBb/8t8ZkX5g="7200
TXT"amazonses:orImnmPhYrtBcBnVpggwak8Yq0zCbeaQ0TRVE62XOCY="7200
TXT"facebook-domain-verification=kf34nqbpwvyz6mcx94inueft6qawbl"7200
TXT"google-site-verification=G-3CAcMINXEz1Y99DZVDUs8xC_TVqo2_LkCGgL84NBs"7200
TXT"google-site-verification=XCZypt0Ur2Ab2jKD8JabH0yImpYKyGai_DkDcMs0eDo\010"7200
TXT"atlassian-domain-verification=ExMuib5S4vcOsSRig1rhvIuxXwhGamX2S7XJxbKmCCURlk4nNO06EDRlLdvn4zOe"7200

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 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