slackware.com

Checked 22 October 2026, 10:44 UTC · via 8.8.8.8
!Passed with warnings
22 passed 4 warnings 0 failed 5 info

Registration

info

.com generic · Network Solutions, LLC · expires 2026-12-25

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Network Solutions, LLC
Registered
26 December 1995
Last changed
28 November 2025
Expires
25 December 2026
Status
client transfer prohibited
Registry nameservers
ns1.cwo.com, ns2.cwo.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 2026-12-25 #3
    The registration is valid until 2026-12-25 (63 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

warn

ns1.cwo.com, ns2.cwo.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns1.cwo.com, ns2.cwo.com
NS in the zone
ns1.cwo.com, ns2.cwo.com
NameserverAddressesNetwork (AS)Glue
ns1.cwo.com64.57.96.19AS11620 SUCCEED-NET - Succeed.Net, US64.57.96.19
ns2.cwo.com52.70.171.109AS14618 AMAZON-AES - Amazon.com, Inc., US50.56.197.155

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.cwo.com, ns2.cwo.com.
    #6
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • !
    Glue differs from the zone
    The addresses at the parent (glue) differ from the addresses in the zone: ns2.cwo.com (glue 50.56.197.155, zone 52.70.171.109). Update the glue at your registrar.
    #8
  • ✓ 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 0 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS11620 (SUCCEED-NET - Succeed.Net, US): 1 address; AS14618 (AMAZON-AES - Amazon.com, Inc., US): 1 address.
  • 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
  • !
    No IPv6
    None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.
    #13

Nameservers

warn

2 of 2 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.cwo.com 64.57.96.19NOERROR, 173 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 5.1.4 (built Aug 10 2026 13:38:30 by root@bh-centos-8.dev.cpanel.net)
ns2.cwo.com 52.70.171.109NOERROR, 98 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 5.1.4 (built Aug 10 2026 00:00:00 by root@bh-centos-9.dev.cpanel.net)

Checks

  • ✓ All respond #14
    All 2 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: ns1.cwo.com: "PowerDNS Authoritative Server 5.1.4 (built Aug 10 2026 13:38:30 by root@bh-centos-8.dev.cpanel.net)"; ns2.cwo.com: "PowerDNS Authoritative Server 5.1.4 (built Aug 10 2026 00:00:00 by root@bh-centos-9.dev.cpanel.net)". 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

info

serial 2025060900 · primary dns1.succeed.net

Found

Primary (MNAME)
dns1.succeed.net
Contact (RNAME)
cpanel_alerts.succeed.net
Serial
2025060900
Refresh / retry
3600 s / 1800 s
Expire
1209600 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns1.cwo.com (64.57.96.19)2025060900
ns2.cwo.com (52.70.171.109)2025060900

Checks

  • ✓ Serial 2025060900 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1h, retry 30m, expire 14d, negative TTL 1d.
  • i
    Hidden master
    The primary nameserver dns1.succeed.net is not listed as a nameserver: a hidden master that only feeds the public secondaries. That is a common setup; make sure it is not reachable for zone transfers from outside.
    #24
  • ✓ Contact cpanel_alerts@succeed.net #25
    The SOA RNAME cpanel_alerts.succeed.net means cpanel_alerts@succeed.net.
  • ✓ Date-based serial #26
    The serial 2025060900 follows the YYYYMMDDnn convention (2025-06-09).

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

6 records at the apex

Found

Read from
64.57.96.19:53
TypeValueTTL
SOAdns1.succeed.net. cpanel_alerts.succeed.net. 2025060900 3600 1800 1209600 8640086400
NSNS2.CWO.com.86400
NSNS1.CWO.com.86400
A64.57.102.3614400
MX10 mail.cwo.com.3600
TXT"v=spf1 ip4:64.57.102.36/29 -all"14400

Checks

  • ✓ TTLs within range #32
    TTLs: A 4h, 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.
  • 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