koreanair.com

Checked 22 October 2026, 09:32 UTC · via 8.8.8.8
!Passed with warnings
26 passed 2 warnings 0 failed 3 info

Registration

info

.com generic · Network Solutions, LLC · expires 2030-05-31

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Network Solutions, LLC
Registered
1 June 1995
Last changed
1 June 2020
Expires
31 May 2030
Status
client transfer prohibited, client update prohibited, server delete prohibited, server transfer prohibited, server update prohibited
Registry nameservers
ns-1232.awsdns-26.org, ns-130.awsdns-16.com, ns-1682.awsdns-18.co.uk, ns-875.awsdns-45.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 2030-05-31 #3
    The registration is valid until 2030-05-31 (1316 days).
  • ✓ Transfer locked #4
    Registry status: client transfer prohibited, client update prohibited, server delete prohibited, server transfer prohibited, server update prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

info

ns-1232.awsdns-26.org, ns-130.awsdns-16.com, ns-1682.awsdns-18.co.uk, ns-875.awsdns-45.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns-1232.awsdns-26.org, ns-130.awsdns-16.com, ns-1682.awsdns-18.co.uk, ns-875.awsdns-45.net
NS in the zone
ns-1232.awsdns-26.org, ns-130.awsdns-16.com, ns-1682.awsdns-18.co.uk, ns-875.awsdns-45.net
NameserverAddressesNetwork (AS)Glue
ns-1232.awsdns-26.org205.251.196.208 2600:9000:5304:d000::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-130.awsdns-16.com205.251.192.130 2600:9000:5300:8200::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.192.130 2600:9000:5300:8200::1
ns-1682.awsdns-18.co.uk205.251.198.146 2600:9000:5306:9200::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-875.awsdns-45.net205.251.195.107 2600:9000:5303:6b00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns-1232.awsdns-26.org, ns-130.awsdns-16.com, ns-1682.awsdns-18.co.uk, ns-875.awsdns-45.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 4 IPv4 /24s and 4 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS16509 (AMAZON-02 - Amazon.com, Inc., US): 8 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.
    #11
  • ✓ Nameserver names under 4 TLDs #12
    Nameserver names use the TLDs .com, .net, .org, .uk.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

pass

8 of 8 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns-1232.awsdns-26.org 205.251.196.208NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns-1232.awsdns-26.org 2600:9000:5304:d000::1NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-130.awsdns-16.com 205.251.192.130NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-130.awsdns-16.com 2600:9000:5300:8200::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-1682.awsdns-18.co.uk 205.251.198.146NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-1682.awsdns-18.co.uk 2600:9000:5306:9200::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-875.awsdns-45.net 205.251.195.107NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-875.awsdns-45.net 2600:9000:5303:6b00::1NOERROR, 5 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 8 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 1 · primary ns-1682.awsdns-18.co.uk

Found

Primary (MNAME)
ns-1682.awsdns-18.co.uk
Contact (RNAME)
awsdns-hostmaster.amazon.com
Serial
1
Refresh / retry
7200 s / 900 s
Expire
1209600 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns-1232.awsdns-26.org (205.251.196.208)1
ns-1232.awsdns-26.org (2600:9000:5304:d000::1)1
ns-130.awsdns-16.com (205.251.192.130)1
ns-130.awsdns-16.com (2600:9000:5300:8200::1)1
ns-1682.awsdns-18.co.uk (205.251.198.146)1
ns-1682.awsdns-18.co.uk (2600:9000:5306:9200::1)1
ns-875.awsdns-45.net (205.251.195.107)1
ns-875.awsdns-45.net (2600:9000:5303:6b00::1)1

Checks

  • ✓ Serial 1 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h, retry 15m, expire 14d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns-1682.awsdns-18.co.uk is one of the listed nameservers.
  • ✓ Contact awsdns-hostmaster@amazon.com #25
    The SOA RNAME awsdns-hostmaster.amazon.com means awsdns-hostmaster@amazon.com.
  • ✓ Counter serial #26
    The serial 1 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

warn

27 records at the apex

Found

Read from
205.251.196.208:53
TypeValueTTL
SOAns-1682.awsdns-18.co.uk. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 864003600
NSns-1232.awsdns-26.org.3600
NSns-130.awsdns-16.com.3600
NSns-1682.awsdns-18.co.uk.3600
NSns-875.awsdns-45.net.3600
A43.203.59.12960
A15.164.148.24760
MX1 aspmx.l.google.com.3600
MX10 alt3.aspmx.l.google.com.3600
MX10 alt4.aspmx.l.google.com.3600
MX5 alt1.aspmx.l.google.com.3600
MX5 alt2.aspmx.l.google.com.3600
TXT"DirectFedAuthUrl=https://sso.skyteam.com/app/lams_entraidauthentication_1/exki1nw5b7Ankn4wZ417/sso/saml"3600
TXT"_globalsign-domain-verification=c6ZJAJgtTTaIMDUwfezCSGo3it4ctLWOOzJjSh9iX1"3600
TXT"cisco-ci-domain-verification=8b6f5f01a0ef2f8fe99d7ae0ed049295c463a0ec47d188b990979c2b6870d47"3600
TXT"facebook-domain-verification=sbmupk98pvsvb1i6lyr4xhro8aovcc"3600
TXT"google-site-verification=e_NF008YP_F5URXm-xjEC4vPAwuEDH8W1qeshNR_NZU"3600
TXT"google-site-verification=fHVfIyT2Sg8zncOEp23dbtXqvJsFY1jeSTmAS5u_F6I"3600
TXT"google-site-verification=lBaUfzedg_ncVgoKkegXR_9cFeX3g__Be5GDUrxBqCQ"3600
TXT"google-site-verification=yRfR4GKIEB0QIKqDU09aRbezb1cS8B08H450W-6Y_O0"3600
TXT"jamf-site-verification=3tndfqKIP_r301sgSC_Q4w"3600
TXT"mailer.domain.verification=DGleKOTanCI1qxTDEZRurwnc3UDA9U"3600
TXT"ntvHbrocmbQXDYlMp14fnAWRKdU3EmD//7gXnRzn7qy4df7rBdlDJuKC6IJRJlXsnsFkBhnZPtigCsjcwjU/vw=="3600
TXT"v=spf1 ip4:210.105.0.253 ip4:210.105.2.1 ip4:210.105.2.5 ip4:210.105.3.73 ip4:210.105.12.0/24 ip4:210.172.94.128/28 ip4:210.190.116.0/25 ip4:118.107.163.170 ip4:210.229.173.192/26 ip4:207.243.58.220 ip4:13.209.193.44 ip4:3.36.252.88 ip4:61.250.88.173" " ip4:59.15.10.2 ip4:59.15.10.3 ip4:15.164.131.59 ip4:15.164.134.230 ip4:15.164.206.187 ip4:15.164.206.52 ip4:15.164.247.202 ip4:15.164.253.224 ip4:15.164.35.97 ip4:15.164.41.222 ip4:15.164.57.7 ip4:15.165.109.62 ip4:15.165.114.150 ip4:15.165.118.1" " ip4:15.165.136.61 ip4:15.165.150.235 ip4:15.165.179.159 ip4:15.165.215.212 ip4:15.165.217.65" " ip4:211.218.145.100 ip4:211.218.145.101 ip4:211.218.145.102 ip4:211.218.145.103 ip4:211.218.145.104 ip4:211.218.145.105 ip4:211.218.145.106 ip4:211.218.145.107 ip4:119.207.76.7 ip4:3.35.62.67 ip4:3.39.176.2" " ip4:15.164.120.34 ip4:52.78.42.221 ip4:54.180.180.127" " ip4:211.48.18.176 ip4:211.48.18.177 ip4:211.48.18.178 ip4:211.48.18.179 ip4:149.96.220.2 ip4:211.48.18.180/30" " include:_spf.hiworks.co.kr include:_spf.google.com include:email.ncloud.com ~all"3600
TXT"v=verifydomain MS=ms79543017"3600
TXT"workplace-domain-verification=9ts5Wd577PELdb2AEaOcjYWeGgQlQH"3600
TXT"workplace-domain-verification=YhyaBy1iH9Frc7dTGbcT817Mjd1ZnF"3600

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (1m). Low TTLs are useful just before a planned change. The NS TTL at the parent is 2d and in the zone 1h; resolvers may use either.
    #32
  • ✓ 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