mitsubishielectric.com

Checked 22 October 2026, 09:52 UTC · via 8.8.8.8
!Passed with warnings
26 passed 2 warnings 0 failed 3 info

Registration

info

.com generic · MarkMonitor Inc. · expires 2027-10-03

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
MarkMonitor Inc.
Registered
4 October 1996
Last changed
1 September 2026
Expires
3 October 2027
Status
client delete prohibited, client transfer prohibited, client update prohibited
Registry nameservers
ns-106.awsdns-13.com, ns-1462.awsdns-54.org, ns-1890.awsdns-44.co.uk, ns-875.awsdns-45.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 2027-10-03 #3
    The registration is valid until 2027-10-03 (345 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

ns-106.awsdns-13.com, ns-1462.awsdns-54.org, ns-1890.awsdns-44.co.uk, ns-875.awsdns-45.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns-106.awsdns-13.com, ns-1462.awsdns-54.org, ns-1890.awsdns-44.co.uk, ns-875.awsdns-45.net
NS in the zone
ns-106.awsdns-13.com, ns-1462.awsdns-54.org, ns-1890.awsdns-44.co.uk, ns-875.awsdns-45.net
NameserverAddressesNetwork (AS)Glue
ns-106.awsdns-13.com205.251.192.106 2600:9000:5300:6a00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.192.106 2600:9000:5300:6a00::1
ns-1462.awsdns-54.org205.251.197.182 2600:9000:5305:b600::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-1890.awsdns-44.co.uk205.251.199.98 2600:9000:5307:6200::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-875.awsdns-45.net205.251.195.107 2600:9000:5303:6b00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns-106.awsdns-13.com, ns-1462.awsdns-54.org, ns-1890.awsdns-44.co.uk, ns-875.awsdns-45.net.
  • ✓ 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 (AS16509 (AMAZON-02 - Amazon.com, Inc., 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 .com, .net, .org, .uk.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

pass

8 of 8 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns-106.awsdns-13.com 205.251.192.106NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-106.awsdns-13.com 2600:9000:5300:6a00::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-1462.awsdns-54.org 205.251.197.182NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns-1462.awsdns-54.org 2600:9000:5305:b600::1NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-1890.awsdns-44.co.uk 205.251.199.98NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-1890.awsdns-44.co.uk 2600:9000:5307:6200::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-875.awsdns-45.net 205.251.195.107NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-875.awsdns-45.net 2600:9000:5303:6b00::1NOERROR, 4 ms, authoritativenoyes / yesrefused-

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.
  • ✓ 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 2024083000 · primary ns-1462.awsdns-54.org

Found

Primary (MNAME)
ns-1462.awsdns-54.org
Contact (RNAME)
melitstaff.rf.mitsubishielectric.co.jp
Serial
2024083000
Refresh / retry
300 s / 180 s
Expire
604800 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
ns-106.awsdns-13.com (205.251.192.106)2024083000
ns-106.awsdns-13.com (2600:9000:5300:6a00::1)2024083000
ns-1462.awsdns-54.org (205.251.197.182)2024083000
ns-1462.awsdns-54.org (2600:9000:5305:b600::1)2024083000
ns-1890.awsdns-44.co.uk (205.251.199.98)2024083000
ns-1890.awsdns-44.co.uk (2600:9000:5307:6200::1)2024083000
ns-875.awsdns-45.net (205.251.195.107)2024083000
ns-875.awsdns-45.net (2600:9000:5303:6b00::1)2024083000

Checks

  • ✓ Serial 2024083000 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    refresh 5m is outside 20m–1d. Current values: refresh 5m, retry 3m, expire 7d, negative TTL 5m.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns-1462.awsdns-54.org is one of the listed nameservers.
  • ✓ Contact melitstaff@rf.mitsubishielectric.co.jp #25
    The SOA RNAME melitstaff.rf.mitsubishielectric.co.jp means melitstaff@rf.mitsubishielectric.co.jp.
  • ✓ Date-based serial #26
    The serial 2024083000 follows the YYYYMMDDnn convention (2024-08-30).

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

11 records at the apex

Found

Read from
205.251.192.106:53
TypeValueTTL
SOAns-1462.awsdns-54.org. melitstaff.rf.mitsubishielectric.co.jp. 2024083000 300 180 604800 300300
NSns-106.awsdns-13.com.300
NSns-1462.awsdns-54.org.300
NSns-1890.awsdns-44.co.uk.300
NSns-875.awsdns-45.net.300
A218.44.57.102300
MX0 mitsubishielectric-com.mail.protection.outlook.com.300
TXT"MS=ms48358902"300
TXT"globalsign-domain-verification=f7oXSahRwPIwIvzzQvyp9jY0MINeMplvdWADA4YY9F"300
TXT"linkedin-site-verification=6c9c030f-3bdc-46ff-9f10-009c2816d79d"300
TXT"v=spf1 +ip4:192.218.140.0/24 ~all"300

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, MX 5m, NS 5m. The NS TTL at the parent is 2d and in the zone 5m; 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