samsungmobile.com

Checked 22 October 2026, 10:34 UTC · via 8.8.8.8
✗Problems found
22 passed 3 warnings 2 failed 4 info

Registration

info

.com generic · Whois Corp. · expires 2027-06-22

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Whois Corp.
Registered
22 June 1999
Last changed
20 May 2026
Expires
22 June 2027
Status
client transfer prohibited, client update prohibited
Registry nameservers
dns-awskr1.samsung.com, dns-gi2.samsung.com, green.samsung.co.kr, red.samsung.co.kr
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 2027-06-22 #3
    The registration is valid until 2027-06-22 (242 days).
  • ✓ Transfer locked #4
    Registry status: client transfer prohibited, client update prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

fail

dns-awskr1.samsung.com, dns-gi2.samsung.com, green.samsung.co.kr, red.samsung.co.kr

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
dns-awskr1.samsung.com, dns-gi2.samsung.com, green.samsung.co.kr, red.samsung.co.kr
NS in the zone
auth01.sam.ic, dns-awskr1.samsung.com, dns-gi2.samsung.com, green.samsung.co.kr, red.samsung.co.kr
NameserverAddressesNetwork (AS)Glue
auth01.sam.ic (zone only)(does not resolve)-
dns-awskr1.samsung.com52.79.211.80AS16509 AMAZON-02 - Amazon.com, Inc., US52.79.211.80
dns-gi2.samsung.com203.241.135.186 203.241.132.185 203.241.135.185AS6619 SAMSUNGSDS-AS-KR-KR - SamsungSDS Inc., KR AS6619 SAMSUNGSDS-AS-KR-KR - SamsungSDS Inc., KR AS6619 SAMSUNGSDS-AS-KR-KR - SamsungSDS Inc., KR203.241.135.185
green.samsung.co.kr211.189.122.246AS6619 SAMSUNGSDS-AS-KR-KR - SamsungSDS Inc., KR-
red.samsung.co.kr203.241.135.111AS6619 SAMSUNGSDS-AS-KR-KR - SamsungSDS Inc., KR-

Checks

  • ✓ 4 nameservers #6
    Delegated to dns-awskr1.samsung.com, dns-gi2.samsung.com, green.samsung.co.kr, red.samsung.co.kr.
  • !
    NS sets differ
    The nameservers at the parent and in the zone should be the same. Only in the zone: auth01.sam.ic. dns-awskr1.samsung.com, dns-gi2.samsung.com, green.samsung.co.kr, red.samsung.co.kr report NS auth01.sam.ic dns-awskr1.samsung.com dns-gi2.samsung.com green.samsung.co.kr red.samsung.co.kr.
    #7
  • !
    Glue differs from the zone
    The addresses at the parent (glue) differ from the addresses in the zone: dns-gi2.samsung.com (glue 203.241.135.185, zone 203.241.135.186, 203.241.132.185, 203.241.135.185). Update the glue at your registrar.
    #8
  • ✗
    Nameserver names don't resolve
    These nameservers have no A or AAAA record, so they can't be reached (lame delegation): auth01.sam.ic.
    #9
  • ✓ Nameservers in different networks #10
    The nameservers are spread over 4 IPv4 /24s and 0 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS16509 (AMAZON-02 - Amazon.com, Inc., US): 1 address; AS6619 (SAMSUNGSDS-AS-KR-KR - SamsungSDS Inc., KR): 5 addresses.
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .com, .kr.
  • i
    Partly IPv6
    These nameservers have no IPv6 address: dns-awskr1.samsung.com, dns-gi2.samsung.com, green.samsung.co.kr, red.samsung.co.kr.
    #13

Nameservers

fail

5 of 6 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
dns-awskr1.samsung.com 52.79.211.80NOERROR, 300 ms, authoritativenoyes / yesrefused-
dns-gi2.samsung.com 203.241.135.186no responsenono / no--
dns-gi2.samsung.com 203.241.132.185NOERROR, 17 ms, authoritativenoyes / yesrefused-
dns-gi2.samsung.com 203.241.135.185NOERROR, 17 ms, authoritativenoyes / yesrefused-
green.samsung.co.kr 211.189.122.246NOERROR, 239 ms, authoritativenoyes / yesrefused-
red.samsung.co.kr 203.241.135.111NOERROR, 285 ms, authoritativenoyes / yesrefused-

Checks

  • ✗
    Nameservers not responding
    These addresses did not answer, so resolvers waste time on timeouts: dns-gi2.samsung.com (203.241.135.186): read udp 46.225.38.91:37168->203.241.135.186:53: i/o timeout.
    #14
  • ✓ 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

info

serial 2020023428 · primary auth01.awskr.ic

Found

Primary (MNAME)
auth01.awskr.ic
Contact (RNAME)
root.ns.adoptee.com
Serial
2020023428
Refresh / retry
10800 s / 3600 s
Expire
2419200 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
dns-awskr1.samsung.com (52.79.211.80)2020023428
dns-gi2.samsung.com (203.241.132.185)2020023428
dns-gi2.samsung.com (203.241.135.185)2020023428
green.samsung.co.kr (211.189.122.246)2020023428
red.samsung.co.kr (203.241.135.111)2020023428

Checks

  • ✓ Serial 2020023428 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 28d, negative TTL 5m.
  • i
    Hidden master (not resolvable)
    The primary nameserver auth01.awskr.ic is not listed as a nameserver and does not resolve publicly: a hidden master, or a placeholder name. Some tools (e.g. dynamic updates) use MNAME to find the primary.
    #24
  • ✓ Contact root@ns.adoptee.com #25
    The SOA RNAME root.ns.adoptee.com means root@ns.adoptee.com.
  • ✓ Timestamp serial #26
    The serial 2020023428 is a Unix timestamp (2034-01-04 21:37 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

20 records at the apex

Found

Read from
52.79.211.80:53
TypeValueTTL
SOAauth01.awskr.ic. root.ns.adoptee.com. 2020023428 10800 3600 2419200 300300
NSdns-awskr1.samsung.com.300
NSred.samsung.co.kr.300
NSdns-gi2.samsung.com.300
NSauth01.sam.ic.300
NSgreen.samsung.co.kr.300
A211.45.27.231300
MX10 mail.samsungmobile.com.300
TXT"globalsign-domain-verification=EF9E45F58049C2C96B5D78C9225F107E"300
TXT"globalsign-domain-verification=5E0EF16F630ABD39196CB5BED1CF20F8"300
TXT"_globalsign-domain-verification=81DOYQoa3AuaBkd6HNQuiTfw-cACQiYlg648ebMlAI"300
TXT"globalsign-domain-verification=09A0F0C76BB87653ACFA21D0F3988ED7"300
TXT"globalsign-domain-verification=F60BEA95496C7933990C7753E8EC04C3"300
TXT"globalsign-domain-verification=C04061D22F42EDCC3A4F141E4E37D18F"300
TXT"globalsign-domain-verification=40BDEF8FCE5F39E7E15FA97B1F7A984B"300
TXT"globalsign-domain-verification=52c2086c66c692934040269600debc58"300
TXT"google-site-verification=eJqaHOuLHqED-isYLF2haqeTBUBz5YK8jCnsRxfn-MI"300
TXT"globalsign-domain-verification=AF787EAF26301B7790BBD1FEC4043A95"300
TXT"v=spf1 a mx include:spf.aknamail.com.br ~all"300
TXT"v=spf1 ip4:210.118.63.90 ~all"300

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, MX 5m, NS 5m. The NS TTL at the parent is 2d and in the zone 5m; 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