sectigo.com

Checked 22 October 2026, 10:35 UTC · via 8.8.8.8
!Passed with warnings
26 passed 1 warning 0 failed 4 info

Registration

info

.com generic · CSC Corporate Domains, Inc. · expires 2028-11-01

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
CSC Corporate Domains, Inc.
Registered
16 August 2018
Last changed
1 November 2018
Expires
1 November 2028
Status
client transfer prohibited
Registry nameservers
ns1.as48447.net, ns2.as48447.net, ns3.as48447.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 2028-11-01 #3
    The registration is valid until 2028-11-01 (740 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

ns1.as48447.net, ns2.as48447.net, ns3.as48447.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns1.as48447.net, ns2.as48447.net, ns3.as48447.net
NS in the zone
ns1.as48447.net, ns2.as48447.net, ns3.as48447.net
NameserverAddressesNetwork (AS)Glue
ns1.as48447.net91.199.212.50 2a0e:ac00:c7:d432::5bc7:d432AS48447 Sectigo - Sectigo Limited, GB AS48447 Sectigo - Sectigo Limited, GB-
ns2.as48447.net91.209.196.50 2a0e:ac00:d1:c432::5bd1:c432AS48447 Sectigo - Sectigo Limited, GB AS48447 Sectigo - Sectigo Limited, GB-
ns3.as48447.net91.212.12.50 2a0e:ac00:d4:c32::5bd4:c32AS48447 Sectigo - Sectigo Limited, GB AS48447 Sectigo - Sectigo Limited, GB-

Checks

  • ✓ 3 nameservers #6
    Delegated to ns1.as48447.net, ns2.as48447.net, ns3.as48447.net.
  • ✓ 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 3 IPv4 /24s and 3 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS48447 (Sectigo - Sectigo Limited, GB): 6 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

6 of 6 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.as48447.net 91.199.212.50NOERROR, 19 ms, authoritativenoyes / yesrefusedNot telling
ns1.as48447.net 2a0e:ac00:c7:d432::5bc7:d432NOERROR, 21 ms, authoritativenoyes / yesrefusedNot telling
ns2.as48447.net 91.209.196.50NOERROR, 19 ms, authoritativenoyes / yesrefusedNot telling
ns2.as48447.net 2a0e:ac00:d1:c432::5bd1:c432NOERROR, 24 ms, authoritativenoyes / yesrefusedNot telling
ns3.as48447.net 91.212.12.50NOERROR, 19 ms, authoritativenoyes / yesrefusedNot telling
ns3.as48447.net 2a0e:ac00:d4:c32::5bd4:c32NOERROR, 24 ms, authoritativenoyes / yesrefusedNot telling

Checks

  • ✓ All respond #14
    All 6 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: ns1.as48447.net: "Not telling"; ns2.as48447.net: "Not telling"; ns3.as48447.net: "Not telling".
    #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 2026102001 · primary ns1.as48447.net

Found

Primary (MNAME)
ns1.as48447.net
Contact (RNAME)
hostmaster.comodoca.com
Serial
2026102001
Refresh / retry
1800 s / 1200 s
Expire
1814400 s
Negative TTL
5400 s

Serial per nameserver

NameserverSerial
ns1.as48447.net (91.199.212.50)2026102001
ns1.as48447.net (2a0e:ac00:c7:d432::5bc7:d432)2026102001
ns2.as48447.net (91.209.196.50)2026102001
ns2.as48447.net (2a0e:ac00:d1:c432::5bd1:c432)2026102001
ns3.as48447.net (91.212.12.50)2026102001
ns3.as48447.net (2a0e:ac00:d4:c32::5bd4:c32)2026102001

Checks

  • ✓ Serial 2026102001 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 30m, retry 20m, expire 21d, negative TTL 90m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.as48447.net is one of the listed nameservers.
  • ✓ Contact hostmaster@comodoca.com #25
    The SOA RNAME hostmaster.comodoca.com means hostmaster@comodoca.com.
  • ✓ Date-based serial #26
    The serial 2026102001 follows the YYYYMMDDnn convention (2026-10-20).

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

22 records at the apex

Found

Read from
91.199.212.50:53
TypeValueTTL
SOAns1.as48447.net. hostmaster.comodoca.com. 2026102001 1800 1200 1814400 54003600
NSns2.as48447.net.86400
NSns3.as48447.net.86400
NSns1.as48447.net.86400
A91.199.212.903600
AAAA2a0e:ac00:c7:d45a::5bc7:d45a3600
MX10 mxb-0097fb02.gslb.pphosted.com.3600
MX10 mxa-0097fb02.gslb.pphosted.com.3600
TXT"adobe-idp-site-verification=36ae2c07616f4614b085c02de240a0c1d1df991410fb790f6c4931123aa4fc32"3600
TXT"atlassian-domain-verification=GbC9hVJfBtEyUVu3TmaYJ9XmHYHAmuNtJr3iKwJxIy63j7VuB0xPikMX3Z6N75Rg"3600
TXT"apple-domain-verification=jPoZqjyTIaVkIIan"3600
TXT"unbounce706839"3600
TXT"smartsheet-site-validation=vgVgLWA9so3iR73esHzHScHJ3kFYZpdo"3600
TXT"paloaltonetworks-site-verification=1ce41dcf81486e0236737c2daee20dd22b955e854d8b994692c624e9d3bea9b2"3600
TXT"docker-verification=e15ea54a-15c6-4d1a-b8e6-8e32aa039dfb"3600
TXT"google-site-verification=Rt79GtFh2wYPHDUA1yFl6h5_3ASJQNR4KsDF-ioNr2g"3600
TXT"anthropic-domain-verification-gxjezd=pZvemxXdG619JhFnDOp45vA8I"3600
TXT"v=spf1 include:spf.protection.outlook.com include:_spf.salesforce.com include:_spf.qualys.com include:spf-0097fb02.pphosted.com ip4:91.199.212.0/24 ip4:91.209.196.0/24 ip4:91.212.12.0/24 ip4:148.163.156.198/32 ip6:2a0e:ac00::/32 -all"3600
TXT"uber-domain-verification=ea296173-dcfe-4f10-b4ce-f12dc611ecfe"3600
TXT"ZOOM_verify_8jnNgilLhIdil4oHyTsyfC"3600
CAA0 issue "sectigo.com"3600
CAA0 issue "ssl.com"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, AAAA 1h, MX 1h, 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: sectigo.com, ssl.com.