syngenta.com

Checked 22 October 2026, 10:53 UTC · via 8.8.8.8
!Passed with warnings
23 passed 2 warnings 0 failed 6 info

Registration

info

.com generic · CSC Corporate Domains, Inc. · expires 2028-09-08

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
CSC Corporate Domains, Inc.
Registered
8 September 1999
Last changed
18 November 2024
Expires
8 September 2028
Status
client transfer prohibited, server delete prohibited, server transfer prohibited, server update prohibited
Registry nameservers
pdns1.cscdns.net, pdns2.cscdns.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 2028-09-08 #3
    The registration is valid until 2028-09-08 (687 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

pdns1.cscdns.net, pdns2.cscdns.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
pdns1.cscdns.net, pdns2.cscdns.net
NS in the zone
pdns1.cscdns.net, pdns2.cscdns.net
NameserverAddressesNetwork (AS)Glue
pdns1.cscdns.net156.154.130.100 2610:a1:1022::100AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
pdns2.cscdns.net156.154.131.100 2610:a1:1023::100AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: pdns1.cscdns.net, pdns2.cscdns.net.
    #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 2 IPv4 /24s and 2 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS12008 (VERCARA - Vercara, LLC, US): 4 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 .net
    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

info

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
pdns1.cscdns.net 156.154.130.100NOERROR, 32 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns1.cscdns.net 2610:a1:1022::100NOERROR, 32 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns2.cscdns.net 156.154.131.100NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns2.cscdns.net 2610:a1:1023::100NOERROR, 4 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver

Checks

  • ✓ All respond #14
    All 4 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.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: pdns1.cscdns.net: "UltraDNS Nameserver"; pdns2.cscdns.net: "UltraDNS Nameserver".
    #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

warn

serial 200311229 · primary pdns1.cscdns.net

Found

Primary (MNAME)
pdns1.cscdns.net
Contact (RNAME)
hostmaster.cscdns.net
Serial
200311229
Refresh / retry
10800 s / 86400 s
Expire
604800 s
Negative TTL
600 s

Serial per nameserver

NameserverSerial
pdns1.cscdns.net (156.154.130.100)200311229
pdns1.cscdns.net (2610:a1:1022::100)200311229
pdns2.cscdns.net (156.154.131.100)200311229
pdns2.cscdns.net (2610:a1:1023::100)200311229

Checks

  • ✓ Serial 200311229 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    retry 1d should be shorter than refresh 3h. Current values: refresh 3h, retry 1d, expire 7d, negative TTL 10m.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver pdns1.cscdns.net is one of the listed nameservers.
  • ✓ Contact hostmaster@cscdns.net #25
    The SOA RNAME hostmaster.cscdns.net means hostmaster@cscdns.net.
  • ✓ Counter serial #26
    The serial 200311229 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

info

38 records at the apex

Found

Read from
156.154.130.100:53
TypeValueTTL
SOApdns1.cscdns.net. hostmaster.cscdns.net. 200311229 10800 86400 604800 600600
NSpdns1.cscdns.net.600
NSpdns2.cscdns.net.600
A151.101.130.216600
A151.101.66.216600
A151.101.2.216600
A151.101.194.216600
MX10 eu-smtp-inbound-1.mimecast.com.300
MX10 eu-smtp-inbound-2.mimecast.com.300
TXT"MS=ms95175596"600
TXT"8b2f82e77924c74bea78eccacec07b8a"600
TXT"_0pmmgjcuk9ecxytuguufklybnfj3zb8"600
TXT"_1q59hyurjlk7qddr27p55tvpuv2xyr8"600
TXT"_kplmlquo71nlwza4ieeteg289p8zyrm"600
TXT"_w6vaks7xkhvqblmfrec6r36eji6w574"600
TXT"mailru-verification: 12ebf29ea10365c8"600
TXT"yandex-verification: b576c3a92b42bf4d"600
TXT"v=spf1 redirect=7p2t9qfg._spf._d.mim.ec"600
TXT"apple-domain-verification=Uk9kxkKfp9vdpQSC"600
TXT"docusign=09c640d3-281a-4e97-bd1b-89d2d79de838"600
TXT"docusign=862de9f4-a194-47de-9ba3-a328990950da"600
TXT"docker-verification=1309777a-12cc-4c81-9204-899cc89a6e4e"600
TXT"onetrust-domain-verification=1f1d4961a2a94394b91e79ff13a36efc"600
TXT"onetrust-domain-verification=31f8d99022e04461bf748f9834523315"600
TXT"onetrust-domain-verification=4714b40b9c83415fb4089e14e39fbc23"600
TXT"F7LZzi9hgu95J8pqy6Hzrf2eqBOR361Z84uvtIf4YeWJHIwjlwvaRcGkbjxfE/9m"600
TXT"google-site-verification=Fzfc5t0S6AWp2pkqkNYYTUV8itFHAyW0AIabZtVT_lQ"600
TXT"google-site-verification=L8eyw659dd0vbUKkWweeFnJpGSWQT952F3zt0AmWMsY"600
TXT"google-site-verification=R5S91rIHyooUsXIZeozHNzD_XdxoL3RyrebLriDPjP4"600
TXT"google-site-verification=S5-XnalkD4inWZcfrd0C-UMVfC7QTaJg6lHwY6xoOhE"600
TXT"google-site-verification=X3uDMDgOKjgybx9A9sGIiezprJ7voLKndj7KIPrG7pY"600
TXT"google-site-verification=jk5dGumfZYu8Zrv3CPKx_fu8ROGtzGSBplVl68I72ag"600
TXT"apple-domain-verification=qNvdl6NzZvA5pCC8vTxSHqkucqXznkQO4gejQWo3-fE"600
TXT"_globalsign-domain-verification=QJYjMjVPDV6oD9T-fZJ0iE3ayYLCGO6hRRG7lbtALg"600
TXT"atlassian-sending-domain-verification=6111751d-3e9a-46e3-985b-4f4be1113e8a"600
TXT"duo_sso_verification=n6lLhSCIZYS54Mtmxl7VqEll0xzXvAzk6cHAhxudhyTF9sFxF4xNHfw22aNpYPhX"600
TXT"iFffbe+w8FGiXj75IiZNHTvDHESEUJ544AcF6OIzBF/11SA/2CkmeAOQoP9kBb/Nx4vsebLliFdqLgHI6ynm0w=="600
TXT"atlassian-domain-verification=F7LZzi9hgu95J8pqy6Hzrf2eqBOR361Z84uvtIf4YeWJHIwjlwvaRcGkbjxfE/9m"600

Checks

  • ✓ TTLs within range #32
    TTLs: A 10m, MX 5m, NS 10m. The NS TTL at the parent is 2d and in the zone 10m; 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