koreaherald.com

Checked 22 October 2026, 09:32 UTC · via 8.8.8.8
!Passed with warnings
24 passed 2 warnings 0 failed 5 info

Registration

info

.com generic · Whois Corp. · expires 2027-11-24

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Whois Corp.
Registered
25 November 1998
Last changed
1 January 2026
Expires
24 November 2027
Status
client transfer prohibited
Registry nameservers
ns1-1.ns-ncloud.com, ns1-2.ns-ncloud.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 2027-11-24 #3
    The registration is valid until 2027-11-24 (397 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

ns1-1.ns-ncloud.com, ns1-2.ns-ncloud.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns1-1.ns-ncloud.com, ns1-2.ns-ncloud.com
NS in the zone
ns1-1.ns-ncloud.com, ns1-2.ns-ncloud.com
NameserverAddressesNetwork (AS)Glue
ns1-1.ns-ncloud.com49.236.156.6AS135354 NBPAP-AS-AP - NAVER BUSINESS PLATFORM ASIA PACIFIC PTE. LTD., SG49.236.156.6
ns1-2.ns-ncloud.com49.236.157.6AS135354 NBPAP-AS-AP - NAVER BUSINESS PLATFORM ASIA PACIFIC PTE. LTD., SG49.236.157.6

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1-1.ns-ncloud.com, ns1-2.ns-ncloud.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 2 IPv4 /24s and 0 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS135354 (NBPAP-AS-AP - NAVER BUSINESS PLATFORM ASIA PACIFIC PTE. LTD., SG): 2 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
  • !
    No IPv6
    None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.
    #13

Nameservers

pass

2 of 2 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1-1.ns-ncloud.com 49.236.156.6NOERROR, 271 ms, authoritativenoyes / yesrefused-
ns1-2.ns-ncloud.com 49.236.157.6NOERROR, 4 ms, authoritativenoyes / yesrefused-

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.
  • ✓ No version disclosed #17
    The nameservers don't reveal their software version.
  • ✓ 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 8 · primary ns1-1.ns-ncloud.com

Found

Primary (MNAME)
ns1-1.ns-ncloud.com
Contact (RNAME)
ns1-2.ns-ncloud.com
Serial
8
Refresh / retry
21600 s / 1800 s
Expire
1209600 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
ns1-1.ns-ncloud.com (49.236.156.6)8
ns1-2.ns-ncloud.com (49.236.157.6)8

Checks

  • ✓ Serial 8 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 6h, retry 30m, expire 14d, negative TTL 5m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1-1.ns-ncloud.com is one of the listed nameservers.
  • ✓ Contact ns1-2@ns-ncloud.com #25
    The SOA RNAME ns1-2.ns-ncloud.com means ns1-2@ns-ncloud.com.
  • ✓ Counter serial #26
    The serial 8 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

8 records at the apex

Found

Read from
49.236.156.6:53
TypeValueTTL
SOAns1-1.ns-ncloud.com. ns1-2.ns-ncloud.com. 8 21600 1800 1209600 300300
NSns1-1.ns-ncloud.com.86400
NSns1-2.ns-ncloud.com.86400
A223.130.159.95300
MX10 mail.koreaherald.com.300
TXT"google-site-verification=ftlRnMD3_XwTiv2tZOb2Bi1Lm9lEHHdqqDH7cJsvgAs"300
TXT"google-site-verification=xaAzN0gUSpnkXBFFI-j6S_l69IPVCmX8Flx_Sq3LuK4"300
TXT"v=spf1 ip4:223.130.132.228 ip4:211.200.28.40 include:spf.tmes.trendmicro.com ~all"300

Checks

  • ✓ TTLs within range #32
    TTLs: A 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.
  • ✓ 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