omron.com

Checked 22 October 2026, 10:05 UTC · via 8.8.8.8
!Passed with warnings
25 passed 3 warnings 0 failed 3 info

Registration

info

.com generic · Amazon Registrar, Inc. · expires 2030-11-11

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Amazon Registrar, Inc.
Registered
3 October 1997
Last changed
16 May 2026
Expires
11 November 2030
Status
client transfer prohibited
Registry nameservers
ns-1307.awsdns-35.org, ns-176.awsdns-22.com, ns-1832.awsdns-37.co.uk, ns-934.awsdns-52.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 2030-11-11 #3
    The registration is valid until 2030-11-11 (1481 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

warn

ns-1307.awsdns-35.org, ns-176.awsdns-22.com, ns-1832.awsdns-37.co.uk, ns-934.awsdns-52.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns-1307.awsdns-35.org, ns-176.awsdns-22.com, ns-1832.awsdns-37.co.uk, ns-934.awsdns-52.net
NS in the zone
nsa.omron.com, nsb.omron.com, nsc.omron.com, nsd.omron.com
NameserverAddressesNetwork (AS)Glue
ns-1307.awsdns-35.org (parent only)205.251.197.27 2600:9000:5305:1b00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-176.awsdns-22.com (parent only)205.251.192.176 2600:9000:5300:b000::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.192.176 2600:9000:5300:b000::1
ns-1832.awsdns-37.co.uk (parent only)205.251.199.40 2600:9000:5307:2800::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-934.awsdns-52.net (parent only)205.251.195.166 2600:9000:5303:a600::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
nsa.omron.com (zone only)205.251.199.40 2600:9000:5307:2800::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
nsb.omron.com (zone only)205.251.197.27 2600:9000:5305:1b00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
nsc.omron.com (zone only)205.251.192.176 2600:9000:5300:b000::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
nsd.omron.com (zone only)205.251.195.166 2600:9000:5303:a600::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns-1307.awsdns-35.org, ns-176.awsdns-22.com, ns-1832.awsdns-37.co.uk, ns-934.awsdns-52.net.
  • !
    NS sets differ
    The nameservers at the parent and in the zone should be the same. Only at the parent: ns-1307.awsdns-35.org, ns-176.awsdns-22.com, ns-1832.awsdns-37.co.uk, ns-934.awsdns-52.net; only in the zone: nsa.omron.com, nsb.omron.com, nsc.omron.com, nsd.omron.com. ns-1307.awsdns-35.org, ns-176.awsdns-22.com, ns-1832.awsdns-37.co.uk, ns-934.awsdns-52.net, nsa.omron.com, nsb.omron.com, nsc.omron.com, nsd.omron.com report NS nsa.omron.com nsb.omron.com nsc.omron.com nsd.omron.com.
    #7
  • ✓ 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): 16 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

16 of 16 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns-1307.awsdns-35.org 205.251.197.27NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns-1307.awsdns-35.org 2600:9000:5305:1b00::1NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-176.awsdns-22.com 205.251.192.176NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-176.awsdns-22.com 2600:9000:5300:b000::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-1832.awsdns-37.co.uk 205.251.199.40NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-1832.awsdns-37.co.uk 2600:9000:5307:2800::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-934.awsdns-52.net 205.251.195.166NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-934.awsdns-52.net 2600:9000:5303:a600::1NOERROR, 4 ms, authoritativenoyes / yesrefused-
nsa.omron.com 205.251.199.40NOERROR, 9 ms, authoritativenoyes / yesrefused-
nsa.omron.com 2600:9000:5307:2800::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
nsb.omron.com 205.251.197.27NOERROR, 3 ms, authoritativenoyes / yesrefused-
nsb.omron.com 2600:9000:5305:1b00::1NOERROR, 4 ms, authoritativenoyes / yesrefused-
nsc.omron.com 205.251.192.176NOERROR, 9 ms, authoritativenoyes / yesrefused-
nsc.omron.com 2600:9000:5300:b000::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
nsd.omron.com 205.251.195.166NOERROR, 4 ms, authoritativenoyes / yesrefused-
nsd.omron.com 2600:9000:5303:a600::1NOERROR, 4 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 16 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

pass

serial 1 · primary nsa.omron.com

Found

Primary (MNAME)
nsa.omron.com
Contact (RNAME)
awsdns-hostmaster.amazon.com
Serial
1
Refresh / retry
7200 s / 900 s
Expire
1209600 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns-1307.awsdns-35.org (205.251.197.27)1
ns-1307.awsdns-35.org (2600:9000:5305:1b00::1)1
ns-176.awsdns-22.com (205.251.192.176)1
ns-176.awsdns-22.com (2600:9000:5300:b000::1)1
ns-1832.awsdns-37.co.uk (205.251.199.40)1
ns-1832.awsdns-37.co.uk (2600:9000:5307:2800::1)1
ns-934.awsdns-52.net (205.251.195.166)1
ns-934.awsdns-52.net (2600:9000:5303:a600::1)1
nsa.omron.com (205.251.199.40)1
nsa.omron.com (2600:9000:5307:2800::1)1
nsb.omron.com (205.251.197.27)1
nsb.omron.com (2600:9000:5305:1b00::1)1
nsc.omron.com (205.251.192.176)1
nsc.omron.com (2600:9000:5300:b000::1)1
nsd.omron.com (205.251.195.166)1
nsd.omron.com (2600:9000:5303:a600::1)1

Checks

  • ✓ Serial 1 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h, retry 15m, expire 14d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver nsa.omron.com is one of the listed nameservers.
  • ✓ Contact awsdns-hostmaster@amazon.com #25
    The SOA RNAME awsdns-hostmaster.amazon.com means awsdns-hostmaster@amazon.com.
  • ✓ Counter serial #26
    The serial 1 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

43 records at the apex

Found

Read from
205.251.197.27:53
TypeValueTTL
SOAnsa.omron.com. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 864003600
NSnsa.omron.com.3600
NSnsb.omron.com.3600
NSnsc.omron.com.3600
NSnsd.omron.com.3600
MX0 omron-com.mail.protection.outlook.com.60
TXT"2dqrhtsbbppw69tp7p4sxtrkzl5w5593"60
TXT"5g5afg94qmv8v9604q3bhtl0o0"60
TXT"MS=ms17419388"60
TXT"_globalsign-domain-verification=7Rt-nhMJRbZ_YOlv0NerBfsxaYDcjCM5fxNRQWtKqw"60
TXT"adobe-idp-site-verification=9dfe073ac3056a0fcde9f39b1349d14af4ba03cc887e5dea2bad65a8f3941580"60
TXT"amazonses:IZPieLI0nNRGaFclUTi9Iu0JgV8MU8FF3aWv+P+v4ts="60
TXT"atlassian-domain-verification=rFsh0cWMbAigGElBUe6mbGnzZWXq8TWL4WQ2arpSvfeP4gyQk8UOpCQza0XhaxR0"60
TXT"box-domain-verification=10ccfbce451ebaf2492c48aa2f6676093120ab756b2f350071e9f3b7f90655b2"60
TXT"box-domain-verification=34aeb4e20b07d6f5e6d8e3243bbb9c3860cd772410795a1d5b9a9a8c1d555b1e"60
TXT"box-domain-verification=b3a0bae8a643fd4e095e8a7712116b87479f54572c1c6babf747d581514291a5"60
TXT"brevo-code:f6e7a3f68c450eda255f801f44aebcc8"60
TXT"cloudflare_dashboard_sso=e5867b1b846a44cb942416443f5fcc83"60
TXT"docusign=0e809977-c1c6-4c73-8753-5f68f541cacd"60
TXT"duo_sso_verification=3dVomYU9PIsD6KPwU8OSXmDwpAqLCqiqXN2wb6vvOpwp41vXaS5ogcCaHAmBqgfH"60
TXT"gjb7v4miqulfanfu7ugdiso2mm"60
TXT"google-gws-recovery-domain-verification=43023657"60
TXT"google-gws-recovery-domain-verification=43214344"60
TXT"google-site-verification=dDcQ_en1_GgZdEliNmwCfT02kPEjSBVN8uFGAVIGPXw"60
TXT"google-site-verification=df0u-Copl_48xG1_T5UQTBVH7ZTIngXpw2skKZb6wY8"60
TXT"mdzktf678tx94thd5mgg0r30b2jlfffz"60
TXT"miro-verification=03f4be4897c63da4818ab2938be65c9eaccada7a"60
TXT"nintex.05218e82-c161-4522-88ee-6dc62a2ec7c7"60
TXT"nintex.60611e9f23cb1b006e035ad6"60
TXT"nintex.615abdb9e657f90069efb677"60
TXT"nintex.d55f5cbe-2450-426d-8b8e-0f1b9194c721"60
TXT"notion-domain-verification=vblzRS5eNIlNi5P1ononMEKhuvorx5baBleqsELkU3a"60
TXT"onetrust-domain-verification=d4915a1e9adb48628b4a137e41d20583"60
TXT"pardot_22312_*=4379962b41b7f24ed6422634b2d42b102b8f2990df3aef3d50a8bab3d65b0b2e"60
TXT"pardot_22312_*=7e188e5faf2a714f441c3453dba0a2fc936968b318bd20c0fe2b7f4f236e8977"60
TXT"pardot_22312_*=863389e4186f5d6ba315be1bec2ce0894a1c33253a735242c371dc503d6459c2"60
TXT"sending_domain794783=676c4ee576f7aac43f70bdb30ecf8d99c05cede95c567320815171e2d8a17659"60
TXT"sending_domain986311=b506c6ae35382733402b368d9e67248476adc2f3ba11c0534ecb725823d8a520"60
TXT"sophos-domain-verification=af6d8d33e69b02aa19f99768b2600b22070259b17966f36f1afab10a8fd4f9a7"60
TXT"stripe-verification=dfb2db661cc80a89a0295ae118b2d8d0b68c536c41e268de938a16b4c2dab46a"60
TXT"successfactors-site-verification=ZDAzMmUyYmY5ZDc1Y2I2NzRlOTRiN2U1MGI2OTA0YWNhNzU4Y2YwOWQ4ZWI5NzJkYmZhOTFiNTQ2OWNkOTUwOA=="60
TXT"taegis-domain-verification=16ad58966281697d03968f70fa01ef5c905acb14a5b91b156f7dd84c5cebccb6"60
TXT"v=spf1 ip4:43.228.185.67 ip4:43.228.187.74 ip4:66.115.171.12 include:spf.protection.outlook.com include:et._spf.pardot.com include:_spf.salesforce.com include:spf.mta.hdems.com include:_a.omron.com include:_spf.mailgun.org ~all"60

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: MX (1m). 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