insidehighered.com

Checked 22 October 2026, 09:20 UTC · via 8.8.8.8
!Passed with warnings
23 passed 2 warnings 0 failed 6 info

Registration

info

.com generic · Network Solutions, LLC · expires 2030-10-25

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Network Solutions, LLC
Registered
25 October 2004
Last changed
26 August 2025
Expires
25 October 2030
Status
client transfer prohibited
Registry nameservers
lia.ns.cloudflare.com, lloyd.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 2030-10-25 #3
    The registration is valid until 2030-10-25 (1464 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

lia.ns.cloudflare.com, lloyd.ns.cloudflare.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
lia.ns.cloudflare.com, lloyd.ns.cloudflare.com
NS in the zone
lia.ns.cloudflare.com, lloyd.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
lia.ns.cloudflare.com108.162.192.185 172.64.32.185 173.245.58.185 2606:4700:50::adf5:3ab9 2a06:98c1:50::ac40:20b9 2803:f800:50::6ca2:c0b9AS13335 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., US108.162.192.185 172.64.32.185 173.245.58.185 2606:4700:50::adf5:3ab9 2803:f800:50::6ca2:c0b9 2a06:98c1:50::ac40:20b9
lloyd.ns.cloudflare.com108.162.193.197 172.64.33.197 173.245.59.197 2803:f800:50::6ca2:c1c5 2a06:98c1:50::ac40:21c5 2606:4700:58::adf5:3bc5AS13335 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., US108.162.193.197 172.64.33.197 173.245.59.197 2606:4700:58::adf5:3bc5 2803:f800:50::6ca2:c1c5 2a06:98c1:50::ac40:21c5

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: lia.ns.cloudflare.com, lloyd.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
lia.ns.cloudflare.com 108.162.192.185NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
lia.ns.cloudflare.com 172.64.32.185NOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
lia.ns.cloudflare.com 173.245.58.185NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
lia.ns.cloudflare.com 2606:4700:50::adf5:3ab9NOERROR, 18 ms, authoritativenoyes / yesrefused2026.10.2
lia.ns.cloudflare.com 2a06:98c1:50::ac40:20b9NOERROR, 24 ms, authoritativenoyes / yesrefused2026.10.2
lia.ns.cloudflare.com 2803:f800:50::6ca2:c0b9NOERROR, 17 ms, authoritativenoyes / yesrefused2026.10.2
lloyd.ns.cloudflare.com 108.162.193.197NOERROR, 17 ms, authoritativenoyes / yesrefused2026.10.2
lloyd.ns.cloudflare.com 172.64.33.197NOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
lloyd.ns.cloudflare.com 173.245.59.197NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
lloyd.ns.cloudflare.com 2803:f800:50::6ca2:c1c5NOERROR, 20 ms, authoritativenoyes / yesrefused2026.10.2
lloyd.ns.cloudflare.com 2a06:98c1:50::ac40:21c5NOERROR, 19 ms, authoritativenoyes / yesrefused2026.10.2
lloyd.ns.cloudflare.com 2606:4700:58::adf5:3bc5NOERROR, 18 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: lia.ns.cloudflare.com: "2026.10.2"; lloyd.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 2415095124 · primary lia.ns.cloudflare.com

Found

Primary (MNAME)
lia.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2415095124
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
lia.ns.cloudflare.com (108.162.192.185)2415095124
lia.ns.cloudflare.com (172.64.32.185)2415095124
lia.ns.cloudflare.com (173.245.58.185)2415095124
lia.ns.cloudflare.com (2606:4700:50::adf5:3ab9)2415095124
lia.ns.cloudflare.com (2a06:98c1:50::ac40:20b9)2415095124
lia.ns.cloudflare.com (2803:f800:50::6ca2:c0b9)2415095124
lloyd.ns.cloudflare.com (108.162.193.197)2415095124
lloyd.ns.cloudflare.com (172.64.33.197)2415095124
lloyd.ns.cloudflare.com (173.245.59.197)2415095124
lloyd.ns.cloudflare.com (2803:f800:50::6ca2:c1c5)2415095124
lloyd.ns.cloudflare.com (2a06:98c1:50::ac40:21c5)2415095124
lloyd.ns.cloudflare.com (2606:4700:58::adf5:3bc5)2415095124

Checks

  • ✓ Serial 2415095124 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 lia.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 2415095124 is a Unix timestamp (2046-07-13 11:45 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

17 records at the apex

Found

Read from
108.162.192.185:53
TypeValueTTL
SOAlia.ns.cloudflare.com. dns.cloudflare.com. 2415095124 10000 2400 604800 18001800
NSlia.ns.cloudflare.com.86400
NSlloyd.ns.cloudflare.com.86400
A172.67.97.130300
A104.25.117.53300
A104.25.118.53300
AAAA2606:4700:20::ac43:6182300
AAAA2606:4700:20::6819:7635300
AAAA2606:4700:20::6819:7535300
MX0 insidehighered-com.mail.protection.outlook.com.300
TXT"MS=ms13111979"300
TXT"ZOOM_verify_YdRGjKx1XaRjnjSZySwHGi"300
TXT"google-site-verification=X7Nz_uWgVM3wCjZbAM33gGwLndBnJqypsVTpIblzzl8"300
TXT"google-site-verification=xVZdOMOwj-NzHveE7D16yEiFkGy8KH6bEw-F-TSYdsA"300
TXT"knowbe4-site-verification=0b0e476c4232a812c049c8add814ecc7"300
TXT"stripe-verification=87680f305a13bf4ee2404e09ad4fd07e0e2045049ac0554494241a0eff157443"300
TXT"v=spf1 a ip4:173.192.104.145 ip4:173.231.138.194 ip4:205.201.130.154 ip4:69.20.66.11 ip4:74.121.194.240/28 ip4:198.2.180.151 include:servers.mcsv.net include:spf.protection.outlook.com include:_spf.mailgun.org include:spf2.insi" "dehighered.com ~all"300

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, AAAA 5m, MX 5m, 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
  • 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