liebertpub.com

Checked 22 October 2026, 09:35 UTC · via 8.8.8.8
!Passed with warnings
23 passed 2 warnings 0 failed 6 info

Registration

info

.com generic · 123-Reg Limited · expires 2028-01-18

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
123-Reg Limited
Registered
17 January 1997
Last changed
1 June 2026
Expires
18 January 2028
Status
client delete prohibited, client renew prohibited, client transfer prohibited, client update prohibited
Registry nameservers
ishaan.ns.cloudflare.com, saanvi.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 2028-01-18 #3
    The registration is valid until 2028-01-18 (452 days).
  • ✓ Transfer locked #4
    Registry status: client delete prohibited, client renew prohibited, client transfer prohibited, client update prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

info

ishaan.ns.cloudflare.com, saanvi.ns.cloudflare.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ishaan.ns.cloudflare.com, saanvi.ns.cloudflare.com
NS in the zone
ishaan.ns.cloudflare.com, saanvi.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
ishaan.ns.cloudflare.com108.162.195.213 172.64.35.213 162.159.44.213 2606:4700:58::a29f:2cd5 2803:f800:50::6ca2:c3d5 2a06:98c1:50::ac40:23d5AS13335 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., US108.162.195.213 162.159.44.213 172.64.35.213 2606:4700:58::a29f:2cd5 2803:f800:50::6ca2:c3d5 2a06:98c1:50::ac40:23d5
saanvi.ns.cloudflare.com108.162.194.80 172.64.34.80 162.159.38.80 2803:f800:50::6ca2:c250 2a06:98c1:50::ac40:2250 2606:4700:50::a29f:2650AS13335 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., US108.162.194.80 162.159.38.80 172.64.34.80 2606:4700:50::a29f:2650 2803:f800:50::6ca2:c250 2a06:98c1:50::ac40:2250

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ishaan.ns.cloudflare.com, saanvi.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
ishaan.ns.cloudflare.com 108.162.195.213NOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
ishaan.ns.cloudflare.com 172.64.35.213NOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
ishaan.ns.cloudflare.com 162.159.44.213NOERROR, 32 ms, authoritativenoyes / yesrefused2026.10.2
ishaan.ns.cloudflare.com 2606:4700:58::a29f:2cd5NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
ishaan.ns.cloudflare.com 2803:f800:50::6ca2:c3d5NOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
ishaan.ns.cloudflare.com 2a06:98c1:50::ac40:23d5NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
saanvi.ns.cloudflare.com 108.162.194.80NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
saanvi.ns.cloudflare.com 172.64.34.80NOERROR, 28 ms, authoritativenoyes / yesrefused2026.10.2
saanvi.ns.cloudflare.com 162.159.38.80NOERROR, 32 ms, authoritativenoyes / yesrefused2026.10.2
saanvi.ns.cloudflare.com 2803:f800:50::6ca2:c250NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
saanvi.ns.cloudflare.com 2a06:98c1:50::ac40:2250NOERROR, 20 ms, authoritativenoyes / yesrefused2026.10.2
saanvi.ns.cloudflare.com 2606:4700:50::a29f:2650NOERROR, 16 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: ishaan.ns.cloudflare.com: "2026.10.2"; saanvi.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 2418147049 · primary ishaan.ns.cloudflare.com

Found

Primary (MNAME)
ishaan.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2418147049
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
ishaan.ns.cloudflare.com (108.162.195.213)2418147049
ishaan.ns.cloudflare.com (172.64.35.213)2418147049
ishaan.ns.cloudflare.com (162.159.44.213)2418147049
ishaan.ns.cloudflare.com (2606:4700:58::a29f:2cd5)2418147049
ishaan.ns.cloudflare.com (2803:f800:50::6ca2:c3d5)2418147049
ishaan.ns.cloudflare.com (2a06:98c1:50::ac40:23d5)2418147049
saanvi.ns.cloudflare.com (108.162.194.80)2418147049
saanvi.ns.cloudflare.com (172.64.34.80)2418147049
saanvi.ns.cloudflare.com (162.159.38.80)2418147049
saanvi.ns.cloudflare.com (2803:f800:50::6ca2:c250)2418147049
saanvi.ns.cloudflare.com (2a06:98c1:50::ac40:2250)2418147049
saanvi.ns.cloudflare.com (2606:4700:50::a29f:2650)2418147049

Checks

  • ✓ Serial 2418147049 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 ishaan.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 2418147049 is a Unix timestamp (2046-08-17 19:30 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

14 records at the apex

Found

Read from
108.162.195.213:53
TypeValueTTL
SOAishaan.ns.cloudflare.com. dns.cloudflare.com. 2418147049 10000 2400 604800 18001800
NSishaan.ns.cloudflare.com.86400
NSsaanvi.ns.cloudflare.com.86400
A104.18.43.204300
A172.64.144.52300
AAAA2606:4700:440b::ac40:9034300
AAAA2a06:98c1:310d::6812:2bcc300
MX0 liebertpub-com.mail.protection.outlook.com.3600
TXT"5ntlnbck2lvi2kltjro69d3me1"300
TXT"62benrd3i5em8t3a7j46aque59"300
TXT"MS=ms81533623"300
TXT"adobe-idp-site-verification=d03abbf8bd40de306915d86ae47c3f71c79a9730b6792873dd00028b57f6e967"300
TXT"v8p3g0hi0jvggve69hulof7o9f"300
TXT"v=spf1 include:us._netblocks.mimecast.com include:spf.protection.outlook.com ~all"300

Checks

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