onsemi.com

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

Registration

info

.com generic · CSC Corporate Domains, Inc. · expires 2030-07-15

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
CSC Corporate Domains, Inc.
Registered
15 July 1999
Last changed
4 April 2026
Expires
15 July 2030
Status
client transfer prohibited
Registry nameservers
kelly.ns.cloudflare.com, sri.ns.cloudflare.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 2030-07-15 #3
    The registration is valid until 2030-07-15 (1361 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

kelly.ns.cloudflare.com, sri.ns.cloudflare.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
kelly.ns.cloudflare.com, sri.ns.cloudflare.com
NS in the zone
kelly.ns.cloudflare.com, sri.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
kelly.ns.cloudflare.com108.162.194.91 162.159.38.91 172.64.34.91 2606:4700:50::a29f:265b 2803:f800:50::6ca2:c25b 2a06:98c1:50::ac40:225bAS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US108.162.194.91 162.159.38.91 172.64.34.91 2606:4700:50::a29f:265b 2803:f800:50::6ca2:c25b 2a06:98c1:50::ac40:225b
sri.ns.cloudflare.com108.162.193.234 172.64.33.234 173.245.59.234 2803:f800:50::6ca2:c1ea 2606:4700:58::adf5:3bea 2a06:98c1:50::ac40:21eaAS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US108.162.193.234 172.64.33.234 173.245.59.234 2606:4700:58::adf5:3bea 2803:f800:50::6ca2:c1ea 2a06:98c1:50::ac40:21ea

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: kelly.ns.cloudflare.com, sri.ns.cloudflare.com.
    #6
  • ✓ 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 4 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS13335 (CLOUDFLARENET - Cloudflare, Inc., US): 12 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.
    #11
  • 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
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

warn

12 of 12 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
kelly.ns.cloudflare.com 108.162.194.91NOERROR, 5 ms, authoritativenoyes / yesrefused2026.10.2
kelly.ns.cloudflare.com 162.159.38.91NOERROR, 32 ms, authoritativenoyes / yesrefused2026.10.2
kelly.ns.cloudflare.com 172.64.34.91NOERROR, 6 ms, authoritativenoyes / yesrefused2026.10.2
kelly.ns.cloudflare.com 2606:4700:50::a29f:265bNOERROR, 6 ms, authoritativenoyes / yesrefused2026.10.2
kelly.ns.cloudflare.com 2803:f800:50::6ca2:c25bNOERROR, 5 ms, authoritativenoyes / yesrefused2026.10.2
kelly.ns.cloudflare.com 2a06:98c1:50::ac40:225bNOERROR, 5 ms, authoritativenoyes / yesrefused2026.10.2
sri.ns.cloudflare.com 108.162.193.234NOERROR, 6 ms, authoritativenoyes / yesrefused2026.10.2
sri.ns.cloudflare.com 172.64.33.234NOERROR, 6 ms, authoritativenoyes / yesrefused2026.10.2
sri.ns.cloudflare.com 173.245.59.234NOERROR, 6 ms, authoritativenoyes / yesrefused2026.10.2
sri.ns.cloudflare.com 2803:f800:50::6ca2:c1eaNOERROR, 7 ms, authoritativenoyes / yesrefused2026.10.2
sri.ns.cloudflare.com 2606:4700:58::adf5:3beaNOERROR, 6 ms, authoritativenoyes / yesrefused2026.10.2
sri.ns.cloudflare.com 2a06:98c1:50::ac40:21eaNOERROR, 5 ms, authoritativenoyes / yesrefused2026.10.2

Checks

  • ✓ All respond #14
    All 12 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.
  • !
    Software version disclosed
    These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: kelly.ns.cloudflare.com: "2026.10.2"; sri.ns.cloudflare.com: "2026.10.2". Hide or replace the version string.
    #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 2418135772 · primary kelly.ns.cloudflare.com

Found

Primary (MNAME)
kelly.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2418135772
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
kelly.ns.cloudflare.com (108.162.194.91)2418135772
kelly.ns.cloudflare.com (162.159.38.91)2418135772
kelly.ns.cloudflare.com (172.64.34.91)2418135772
kelly.ns.cloudflare.com (2606:4700:50::a29f:265b)2418135772
kelly.ns.cloudflare.com (2803:f800:50::6ca2:c25b)2418135772
kelly.ns.cloudflare.com (2a06:98c1:50::ac40:225b)2418135772
sri.ns.cloudflare.com (108.162.193.234)2418135772
sri.ns.cloudflare.com (172.64.33.234)2418135772
sri.ns.cloudflare.com (173.245.59.234)2418135772
sri.ns.cloudflare.com (2803:f800:50::6ca2:c1ea)2418135772
sri.ns.cloudflare.com (2606:4700:58::adf5:3bea)2418135772
sri.ns.cloudflare.com (2a06:98c1:50::ac40:21ea)2418135772

Checks

  • ✓ Serial 2418135772 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h46m40s, retry 40m, expire 7d, negative TTL 30m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver kelly.ns.cloudflare.com is one of the listed nameservers.
  • ✓ Contact dns@cloudflare.com #25
    The SOA RNAME dns.cloudflare.com means dns@cloudflare.com.
  • ✓ Timestamp serial #26
    The serial 2418135772 is a Unix timestamp (2046-08-17 16:22 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

pass

51 records at the apex

Found

Read from
108.162.194.91:53
TypeValueTTL
SOAkelly.ns.cloudflare.com. dns.cloudflare.com. 2418135772 10000 2400 604800 18001800
NSkelly.ns.cloudflare.com.86400
NSsri.ns.cloudflare.com.86400
A23.22.192.64300
MX10 usb-smtp-inbound-1.mimecast.com.300
MX10 usb-smtp-inbound-2.mimecast.com.300
TXT"2ff4af648315f0eb4a47b5db1334dca79153afb6caf9ac50cb"300
TXT"Dynatrace-site-verification=6b9af55e-3ed7-487a-a486-87c2a08d6656__svdd3deuo8rs3s814n2mkip6gv"300
TXT"LfDzj/WbMYaaoPpn4NN+jTG9sDpylOqywIbZZSKvobBYrm1avwBdH9JOtkmSMeenlCCk5aeT+UgrWDhSSaHOZg=="300
TXT"MS=ms96587501"300
TXT"Q3oMoQzRagxX0QSe3CNhm+RY2TQVHfwGyfnohS1hVKHnPYdsmD1ezjSPR2fEA6p9HAWm4d19kbBZr9EyKndrgQ=="300
TXT"Xg7qcFCb7jOy/lHUXyiB01PcGZMYKA1/LDJdrFjWZjVuaDsQ2+dO577IJoPMOy1xEvzoWCBonHVo5sk1o1/HSg=="300
TXT"_globalsign-domain-verification=zG9KvHgzitGOf_LynH9AAES7wiZ7qfYT25j1-TOm15"300
TXT"adobe-idp-site-verification=cf254d253c9fc235d8a58f592f221bd8511f8b5dd6804df9375637611d047148"300
TXT"anthropic-domain-verification-3tmas0=wFZKOcxHsQMCkPgPcf0J3tYZx"300
TXT"apple-domain-verification=pmnojt0Kfng3w2Lg"300
TXT"cisco-ci-domain-verification=73aace87916051b929dfee27635915c0c99380c9ac678bb6a2c8352bed8bc4db"300
TXT"cloudflare_dashboard_sso=d9092eb6c29be8e5de1087231f3dcb1e"300
TXT"docker-verification=7b5172d0-29c0-4a84-b8de-6c038944d8d9"300
TXT"edb-biganimal-verification=IBZwl5uSxDOrnGbvqiRT8ACj9q0Glebl"300
TXT"google-gws-recovery-domain-verification=42357869"300
TXT"google-site-verification=B7_z4KtlJLlqmSw8LY_NU0tgYAi72MdJ1w3jXjszbKc"300
TXT"google-site-verification=RThnut19JBdQ_xgzP4x0nwtCUpwts5LugEUzwMARAzE"300
TXT"ms-domain-verification=460f71c0-6d5f-40cb-a76d-7d1e39db83fb"300
TXT"onetrust-domain-verification=585a2b6fe635414a851c3a5fe9e35a0c"300
TXT"onetrust-domain-verification=72e0fa66b44d43f2bb56a994c7cd3df6"300
TXT"onetrust-domain-verification=a257d4c948e449a3a1e9d8d5944a0f10"300
TXT"smartsheet-site-validation=2vtnlBIhlCfrrxErpFRRVkBXMNPKlbvj"300
TXT"v=spf1 redirect=cirdz5os._spf._d.mim.ec"300
TXT"vmware-cloud-verification-6d232955-6142-4fd6-a48b-fc393a4ec6cd"300
CAA0 iodef "mailto:IT-GIS-ESD-ActiveDirectory@onsemi.com"300
CAA0 issue "amazon.com"300
CAA0 issue "amazonaws.com"300
CAA0 issue "amazontrust.com"300
CAA0 issue "awstrust.com"300
CAA0 issue "comodoca.com"300
CAA0 issue "digicert.com; cansignhttpexchanges=yes"300
CAA0 issue "globalsign.com"300
CAA0 issue "letsencrypt.org"300
CAA0 issue "pki.goog; cansignhttpexchanges=yes"300
CAA0 issue "ssl.com"300
CAA0 issuewild "amazon.com"300
CAA0 issuewild "amazonaws.com"300
CAA0 issuewild "amazontrust.com"300
CAA0 issuewild "awstrust.com"300
CAA0 issuewild "comodoca.com"300
CAA0 issuewild "digicert.com; cansignhttpexchanges=yes"300
CAA0 issuewild "globalsign.com"300
CAA0 issuewild "letsencrypt.org"300
CAA0 issuewild "pki.goog; cansignhttpexchanges=yes"300
CAA0 issuewild "ssl.com"300

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, MX 5m, NS 1d. The NS TTL at the parent is 2d and in the zone 1d; 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.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: amazon.com, amazonaws.com, amazontrust.com, awstrust.com, comodoca.com, digicert.com, globalsign.com, letsencrypt.org, pki.goog, ssl.com.