sandisk.com

Checked 22 October 2026, 10:34 UTC · via 8.8.8.8
!Passed with warnings
23 passed 3 warnings 0 failed 5 info

Registration

info

.com generic · CSC Corporate Domains, Inc. · expires 2027-08-29

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
CSC Corporate Domains, Inc.
Registered
30 August 1995
Last changed
14 November 2025
Expires
29 August 2027
Status
client transfer prohibited, server delete prohibited, server transfer prohibited, server update prohibited
Registry nameservers
adam.ns.cloudflare.com, tricia.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 2027-08-29 #3
    The registration is valid until 2027-08-29 (310 days).
  • ✓ Transfer locked #4
    Registry status: client transfer prohibited, server delete prohibited, server transfer prohibited, server update prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

info

adam.ns.cloudflare.com, tricia.ns.cloudflare.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
adam.ns.cloudflare.com, tricia.ns.cloudflare.com
NS in the zone
adam.ns.cloudflare.com, tricia.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
adam.ns.cloudflare.com172.64.33.54 173.245.59.54 108.162.193.54 2606:4700:58::adf5:3b36 2a06:98c1:50::ac40:2136 2803:f800:50::6ca2:c136AS13335 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., US108.162.193.54 172.64.33.54 173.245.59.54 2606:4700:58::adf5:3b36 2803:f800:50::6ca2:c136 2a06:98c1:50::ac40:2136
tricia.ns.cloudflare.com172.64.32.232 173.245.58.232 108.162.192.232 2606:4700:50::adf5:3ae8 2803:f800:50::6ca2:c0e8 2a06:98c1:50::ac40:20e8AS13335 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., US108.162.192.232 172.64.32.232 173.245.58.232 2606:4700:50::adf5:3ae8 2803:f800:50::6ca2:c0e8 2a06:98c1:50::ac40:20e8

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: adam.ns.cloudflare.com, tricia.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
adam.ns.cloudflare.com 172.64.33.54NOERROR, 5 ms, authoritativenoyes / yesrefused2026.10.2
adam.ns.cloudflare.com 173.245.59.54NOERROR, 5 ms, authoritativenoyes / yesrefused2026.10.2
adam.ns.cloudflare.com 108.162.193.54NOERROR, 4 ms, authoritativenoyes / yesrefused2026.10.2
adam.ns.cloudflare.com 2606:4700:58::adf5:3b36NOERROR, 5 ms, authoritativenoyes / yesrefused2026.10.2
adam.ns.cloudflare.com 2a06:98c1:50::ac40:2136NOERROR, 5 ms, authoritativenoyes / yesrefused2026.10.2
adam.ns.cloudflare.com 2803:f800:50::6ca2:c136NOERROR, 18 ms, authoritativenoyes / yesrefused2026.10.2
tricia.ns.cloudflare.com 172.64.32.232NOERROR, 6 ms, authoritativenoyes / yesrefused2026.10.2
tricia.ns.cloudflare.com 173.245.58.232NOERROR, 4 ms, authoritativenoyes / yesrefused2026.10.2
tricia.ns.cloudflare.com 108.162.192.232NOERROR, 4 ms, authoritativenoyes / yesrefused2026.10.2
tricia.ns.cloudflare.com 2606:4700:50::adf5:3ae8NOERROR, 5 ms, authoritativenoyes / yesrefused2026.10.2
tricia.ns.cloudflare.com 2803:f800:50::6ca2:c0e8NOERROR, 6 ms, authoritativenoyes / yesrefused2026.10.2
tricia.ns.cloudflare.com 2a06:98c1:50::ac40:20e8NOERROR, 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: adam.ns.cloudflare.com: "2026.10.2"; tricia.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 2416835819 · primary adam.ns.cloudflare.com

Found

Primary (MNAME)
adam.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2416835819
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
adam.ns.cloudflare.com (172.64.33.54)2416835819
adam.ns.cloudflare.com (173.245.59.54)2416835819
adam.ns.cloudflare.com (108.162.193.54)2416835819
adam.ns.cloudflare.com (2606:4700:58::adf5:3b36)2416835819
adam.ns.cloudflare.com (2a06:98c1:50::ac40:2136)2416835819
adam.ns.cloudflare.com (2803:f800:50::6ca2:c136)2416835819
tricia.ns.cloudflare.com (172.64.32.232)2416835819
tricia.ns.cloudflare.com (173.245.58.232)2416835819
tricia.ns.cloudflare.com (108.162.192.232)2416835819
tricia.ns.cloudflare.com (2606:4700:50::adf5:3ae8)2416835819
tricia.ns.cloudflare.com (2803:f800:50::6ca2:c0e8)2416835819
tricia.ns.cloudflare.com (2a06:98c1:50::ac40:20e8)2416835819

Checks

  • ✓ Serial 2416835819 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 adam.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 2416835819 is a Unix timestamp (2046-08-02 15:16 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

36 records at the apex

Found

Read from
172.64.33.54:53
TypeValueTTL
SOAadam.ns.cloudflare.com. dns.cloudflare.com. 2416835819 10000 2400 604800 1800300
NSadam.ns.cloudflare.com.86400
NStricia.ns.cloudflare.com.86400
A23.55.230.7020
AAAA2a02:26f0:7100:8b5::11f420
AAAA2a02:26f0:7100:880::11f420
MX1 mx1.hc6817-7.iphmx.com.1800
MX1 mx2.hc6817-7.iphmx.com.1800
TXT"41dab4c729f140c8cf88adff0522cdb5.sandisk.com"300
TXT"MS=ms70955674"300
TXT"MS=ms75531210"300
TXT"MS=ms85442250"300
TXT"MS=ms97542446"300
TXT"RafOuRpCLPW+9MXf+F6nQloezswMedFGUybSTFznFnguKCNBNmr7jRTfZgwDMeybS6JBcwkjFRR5MOFh3gUsKw=="300
TXT"ZsciFXWki57Qub9xqF/8j8xEY3MFmhlW8FCOlqk0lSV/pMGC6tbV2KBfJUqb89e4cgfg8Ym1TZB6JmvFbc9NLg=="300
TXT"_5qehdasqbz023izzl7b61o6jc0id8pi"300
TXT"_8ok1jvy8qtxbx5h4jdtdda27u3mcfd4"300
TXT"_x0ptsifo49fx792has27mlu3zu5bpqe"300
TXT"adobe-idp-site-verification=cd4e66ae5a47bbdd972c2a9f57d96cae82d9da2ba397bb44b3d8fb78853fb581"300
TXT"apple-domain-verification=1lMmhyhBiB4SRUBF"300
TXT"asv=ae72aa56d2d60a22990a6c313765c064"300
TXT"atlassian-domain-verification=jlQPgn4fXQnwWKCJISNhVK6oca5jNadD3eBDstcaG89kPJtSGEmFXDWIkJ95sajY"300
TXT"cisco-ci-domain-verification=449be1c98fa323af0184d608adfe7aee1464946c4289203c6d7a5bae41241ad"300
TXT"docker-verification=d4afdc99-7199-4da3-8df7-f4f2c301b3db"300
TXT"facebook-domain-verification=30ar7tshk2bvirbk899r43sa1wh3bi"300
TXT"google-site-verification=25_gvAqgPUQiAqSkfpLSnpWxIwi_SSlTFW3DjO70vnI"300
TXT"google-site-verification=5tauL29wSJ1QbyXG9wpH7NQb6F973GdZ91Mm6ifMCCI"300
TXT"google-site-verification=gLn3k7skFF8WojNYjnW9BGcbhdiMQf8X6LgPNl_Omy8"300
TXT"ha/C0hL/K1X2rfWzrxkAevqQnXAcEDs2h0QTKfMO4hPWFHDy6cm1rlvck6IhA8hWvPmeuRs5megnK2LenKcZcg=="300
TXT"ms-domain-verification=45412f26-f492-47dc-ab7e-71be239d391b"300
TXT"paloaltonetworks-site-verification=11fa0590bab1cd4a72e3e03508d91ba298a182a7476baede4814ad639401f796"300
TXT"paloaltonetworks-site-verification=1bdc6965e1f40bd23ea31485a017090faf3f99dbfa9f85dc866c4e2ce509e365"300
TXT"smartsheet-site-validation=w4VHc-s8BJUQQCDE2Ygunl3-VeHEp8Gq"300
TXT"v=msv1 t=DBA555CB-5610-47B1-87EF-5D0E93E02E8E"300
TXT"v=spf1 include:spf1.sandisk.com include:spf2.sandisk.com include:spf3.sandisk.com include:spf4.sandisk.com include:amazonses.com include:spf5.sandisk.com include:spf.mandrillapp.com include:_spf.salesforce.com ~all"300
TXT"v=verifydomain MS=ms19920930"300

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (20s), AAAA (20s). 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