sika.com

Checked 22 October 2026, 10:42 UTC · via 8.8.8.8
!Passed with warnings
24 passed 2 warnings 0 failed 5 info

Registration

info

.com generic · CSC Corporate Domains, Inc. · expires 2027-07-29

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
CSC Corporate Domains, Inc.
Registered
30 July 1995
Last changed
25 July 2026
Expires
29 July 2027
Status
client transfer prohibited, server delete prohibited, server transfer prohibited, server update prohibited
Registry nameservers
ns01.sika.com, ns02.sika.com, ns03.sika.com, ns04.sika.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 2027-07-29 #3
    The registration is valid until 2027-07-29 (279 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

ns01.sika.com, ns02.sika.com, ns03.sika.com, ns04.sika.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns01.sika.com, ns02.sika.com, ns03.sika.com, ns04.sika.com
NS in the zone
ns01.sika.com, ns02.sika.com, ns03.sika.com, ns04.sika.com
NameserverAddressesNetwork (AS)Glue
ns01.sika.com162.159.8.128 2400:cb00:2049:1::a29f:880AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US162.159.8.128 2400:cb00:2049:1::a29f:880
ns02.sika.com162.159.11.207 2400:cb00:2049:1::a29f:bcfAS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US162.159.11.207 2400:cb00:2049:1::a29f:bcf
ns03.sika.com198.41.222.162 2400:cb00:2049:1::c629:dea2AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US198.41.222.162 2400:cb00:2049:1::c629:dea2
ns04.sika.com198.41.223.217 2400:cb00:2049:1::c629:dfd9AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US198.41.223.217 2400:cb00:2049:1::c629:dfd9

Checks

  • ✓ 4 nameservers #6
    Delegated to ns01.sika.com, ns02.sika.com, ns03.sika.com, ns04.sika.com.
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • ✓ Glue present and correct #8
    Glue is published for the nameservers inside the zone: ns01.sika.com, ns02.sika.com, ns03.sika.com, ns04.sika.com.
  • ✓ All names resolve #9
    Every nameserver name has an address and is not an alias.
  • i
    One address family in one network
    all IPv6 addresses are in 2400:cb00:2049::/48, while the other address family is spread over several networks.
    #10
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS13335 (CLOUDFLARENET - Cloudflare, 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
  • 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

8 of 8 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns01.sika.com 162.159.8.128NOERROR, 4 ms, authoritativenoyes / yesrefused2026.10.2
ns01.sika.com 2400:cb00:2049:1::a29f:880NOERROR, 5 ms, authoritativenoyes / yesrefused2026.10.2
ns02.sika.com 162.159.11.207NOERROR, 4 ms, authoritativenoyes / yesrefused2026.10.2
ns02.sika.com 2400:cb00:2049:1::a29f:bcfNOERROR, 5 ms, authoritativenoyes / yesrefused2026.10.2
ns03.sika.com 198.41.222.162NOERROR, 5 ms, authoritativenoyes / yesrefused2026.10.2
ns03.sika.com 2400:cb00:2049:1::c629:dea2NOERROR, 5 ms, authoritativenoyes / yesrefused2026.10.2
ns04.sika.com 198.41.223.217NOERROR, 4 ms, authoritativenoyes / yesrefused2026.10.2
ns04.sika.com 2400:cb00:2049:1::c629:dfd9NOERROR, 4 ms, authoritativenoyes / yesrefused2026.10.2

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.
  • !
    Software version disclosed
    These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: ns01.sika.com: "2026.10.2"; ns02.sika.com: "2026.10.2"; ns03.sika.com: "2026.10.2"; ns04.sika.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 2418136583 · primary ns01.sika.com

Found

Primary (MNAME)
ns01.sika.com
Contact (RNAME)
dns.int.sika.com
Serial
2418136583
Refresh / retry
10800 s / 3600 s
Expire
1209600 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
ns01.sika.com (162.159.8.128)2418136583
ns01.sika.com (2400:cb00:2049:1::a29f:880)2418136583
ns02.sika.com (162.159.11.207)2418136583
ns02.sika.com (2400:cb00:2049:1::a29f:bcf)2418136583
ns03.sika.com (198.41.222.162)2418136583
ns03.sika.com (2400:cb00:2049:1::c629:dea2)2418136583
ns04.sika.com (198.41.223.217)2418136583
ns04.sika.com (2400:cb00:2049:1::c629:dfd9)2418136583

Checks

  • ✓ Serial 2418136583 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 14d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns01.sika.com is one of the listed nameservers.
  • ✓ Contact dns@int.sika.com #25
    The SOA RNAME dns.int.sika.com means dns@int.sika.com.
  • ✓ Timestamp serial #26
    The serial 2418136583 is a Unix timestamp (2046-08-17 16:36 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

info

55 records at the apex

Found

Read from
162.159.8.128:53
TypeValueTTL
SOAns01.sika.com. dns.int.sika.com. 2418136583 10800 3600 1209600 36003600
NSns01.sika.com.86400
NSns02.sika.com.86400
NSns03.sika.com.86400
NSns04.sika.com.86400
MX5 mx1.sika.com.7200
MX5 mx2.sika.com.7200
TXT"4A719711-7B97-4729-88F5-03737323FBBA"300
TXT"EE66A23E-080F-4D88-A356-F4E3E9D45A3E"300
TXT"MS=ms76565744"300
TXT"QuoVadis=6f46a37b-b3bc-4a60-a566-2e5f666b64e5"300
TXT"QuoVadis=82b5562f-aee7-4758-a1d9-954d66bc244e"300
TXT"adobe-idp-site-verification=7203cfb5397aca5d7e61792859e7a4bc943068322f50a8c38d49b724be778f2e"300
TXT"anthropic-domain-verification-77k61r=IMwGGJz7L8hvZM5vFR0JtKI1b"300
TXT"apple-domain-verification=3rD60XOKahFFdt7Y"300
TXT"atlassian-domain-verification=Yt3dodE50DcoI098Cuq3YbNtziMLM6VrGk2NIs98YcBT2kWf2J9gsPOXsPP5/GFv"300
TXT"cisco-ci-domain-verification=135c10077fc22ff0c49e50cb0e8cbf6f86fc5343ce3603fbf8da9eb421a47790"300
TXT"dtm-domain-verification=Apaj82q8KdH58mjUY9c00T8JrL1xp6EJnJz_G3vYed8"300
TXT"dtm-domain-verification=ujjpizL7etMaLJePSeo5U_V8EkwVrB5OobcqrWYScq0"300
TXT"google-site-verification=91ftq2oYe3iL0qaoPyxGKnUR9e2TBtr_WoBKh4Q2ypc"300
TXT"google-site-verification=OMj4kRUB_1s_pE_P9Ek2LR8teWAPGcDHy1vaNwHfVfU"300
TXT"google-site-verification=Y6GCJy-RmqUmmzoHkbPqrayUWNZCojCtQ7WOUVtmWtU"300
TXT"google-site-verification=lLyJMXwWUMOrTQcPzTOGX8Yq-MGAd2o4UiNp2zEFxIY"300
TXT"kvhfssmhnqztnhcctt1psp7m7c4sf9by"300
TXT"pardot227082=7af0be7d25a5f98c056e22d5eb8ea942850c54ac8a294d944fa453594afd116e"300
TXT"pardot682423=8c53e45b9315405cfb41523a5f1307a69fddfc8bf8f4035b4633ddf6d56fffe9"300
TXT"pardot682423=d8a55d768d375437e57ad3c41437fb0ccb2065e5025880e0c22d4c85aae7a3cd"300
TXT"pardot682683=146fb78884309993d639d2302d283934bcd29657f994a4e43c356f2a6f354c65"300
TXT"pardot682683=5194809f6e37dcfd174db4851d51f1a3c988c7badc08ccbbd78f09dc9752241d"300
TXT"pardot682683=ba608e87fa910f19b36c1e00000c7c6c3d37f11cc0cabb486015c169c17f9340"300
TXT"pardot682693=24b8ee7c32e2ef1f4d53a507214c23e2059ef4ad56e3bc934d0dcf6e5e077bed"300
TXT"pardot682693=b8db6df44e7a8875e2aace56a7832a420047ea77dedf0f48dec7c5df081bad94"300
TXT"pardot682693=ebc3f2b6429e164c52cac86199b0b5daa782bc66309f5f7e2f09ed0a6c442404"300
TXT"pardot682693=ffb0c392010b24b9032456ac203b3c44ece64c2f280daecbe0d66569abf186ed"300
TXT"pardot789393=19b680fbd7ead57842216c7341c5653a736181c06faff4f46ad8b2e4b246eac9"300
TXT"pardot789393=fcbc9dd9f0e2c7a4437239f1017bec88e70066c6c0cd55d3c4046e4bc4a1185a"300
TXT"rh5hnjybllll9320qkcpjsrvxyqj7qcr"300
TXT"smartsheet-site-validation=wQfeWpo22dUisdAtMrBzk2w-NYpNiq_7"300
TXT"swisssign-check=olXtB2vzqQGGNn3Y713sVL4cf84"300
TXT"teamviewer-sso-verification=f22541aa6f9e4b8d87de3c260388e569"300
TXT"twilio-domain-verification=cec4739c7573f5817f3a80372b459618"300
TXT"v=spf1 ip4:185.89.200.0 ip4:185.89.200.1 mx -all"300
CAA0 iodef "mailto:cdt@ch.sika.com"3600
CAA0 issue "comodoca.com"3600
CAA0 issue "digicert.com; cansignhttpexchanges=yes"3600
CAA0 issue "letsencrypt.org"3600
CAA0 issue "pki.goog; cansignhttpexchanges=yes"3600
CAA0 issue "ssl.com"3600
CAA0 issue "swisssign.com"3600
CAA0 issuewild "comodoca.com"3600
CAA0 issuewild "digicert.com; cansignhttpexchanges=yes"3600
CAA0 issuewild "letsencrypt.org"3600
CAA0 issuewild "pki.goog; cansignhttpexchanges=yes"3600
CAA0 issuewild "ssl.com"3600
CAA0 issuewild "swisssign.com"3600

Checks

  • ✓ TTLs within range #32
    TTLs: MX 2h, 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.
  • i
    Wildcard record
    A random name under the zone resolves, so there is a wildcard (*) record. Typos and non-existent hosts resolve too, which can confuse mail and certificate checks.
    #34
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: comodoca.com, digicert.com, letsencrypt.org, pki.goog, ssl.com, swisssign.com.