semicon-storage.com

Checked 22 October 2026, 10:40 UTC · via 8.8.8.8
!Passed with warnings
25 passed 2 warnings 0 failed 4 info

Registration

info

.com generic · Japan Registry Services Co., Ltd. · expires 2027-03-10

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Japan Registry Services Co., Ltd.
Registered
10 March 2014
Last changed
8 March 2026
Expires
10 March 2027
Status
client transfer prohibited
Registry nameservers
a1-72.akam.net, a11-65.akam.net, a13-66.akam.net, a20-67.akam.net, a22-64.akam.net, a8-65.akam.net, ins13.toshiba.co.jp, ins3.toshiba.co.jp, ns00.vips.ne.jp, ns01.vips.ne.jp
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 2027-03-10 #3
    The registration is valid until 2027-03-10 (138 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

a1-72.akam.net, a11-65.akam.net, a13-66.akam.net, a20-67.akam.net, a22-64.akam.net, a8-65.akam.net, ins13.toshiba.co.jp, ins3.toshiba.co.jp, ns00.vips.ne.jp, ns01.vips.ne.jp

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
a1-72.akam.net, a11-65.akam.net, a13-66.akam.net, a20-67.akam.net, a22-64.akam.net, a8-65.akam.net, ins13.toshiba.co.jp, ins3.toshiba.co.jp, ns00.vips.ne.jp, ns01.vips.ne.jp
NS in the zone
a1-72.akam.net, a11-65.akam.net, a13-66.akam.net, a20-67.akam.net, a22-64.akam.net, a8-65.akam.net, ins13.toshiba.co.jp, ins3.toshiba.co.jp, ns00.vips.ne.jp, ns01.vips.ne.jp
NameserverAddressesNetwork (AS)Glue
a1-72.akam.net193.108.91.72 2600:1401:2::48AS20940 AKAMAI-ASN1 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a11-65.akam.net84.53.139.65 2600:1480:1::41AS20940 AKAMAI-ASN1 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a13-66.akam.net2.22.230.66 2600:1480:800::42AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a20-67.akam.net95.100.175.67 2a02:26f0:67::43AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a22-64.akam.net23.211.61.64 2600:1480:7800::40AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a8-65.akam.net2.16.40.65 2600:1403:a::41AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
ins13.toshiba.co.jp38.106.60.138AS131917 TOSHIBA-IS - Toshiba I.S. corp, JP-
ins3.toshiba.co.jp106.186.93.107AS2516 KDDI - KDDI CORPORATION, JP-
ns00.vips.ne.jp210.174.191.1 2001:278:103b:1::1AS4725 ODN - SoftBank Corp., JP AS4725 ODN - SoftBank Corp., JP-
ns01.vips.ne.jp165.76.4.170 2001:278:103c:1::1AS4725 ODN - SoftBank Corp., JP AS4725 ODN - SoftBank Corp., JP-

Checks

  • ✓ 10 nameservers #6
    Delegated to a1-72.akam.net, a11-65.akam.net, a13-66.akam.net, a20-67.akam.net, a22-64.akam.net, a8-65.akam.net, ins13.toshiba.co.jp, ins3.toshiba.co.jp, ns00.vips.ne.jp, ns01.vips.ne.jp.
  • ✓ 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 10 IPv4 /24s and 8 IPv6 /48s.
  • ✓ 5 autonomous systems #11
    The nameservers are spread over: AS131917 (TOSHIBA-IS - Toshiba I.S. corp, JP): 1 address; AS20940 (AKAMAI-ASN1 - Akamai International B.V., NL): 2 addresses; AS21342 (AKAMAI-ASN2 - Akamai International B.V., NL): 10 addresses; AS2516 (KDDI - KDDI CORPORATION, JP): 1 address; AS4725 (ODN - SoftBank Corp., JP): 4 addresses.
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .jp, .net.
  • i
    Partly IPv6
    These nameservers have no IPv6 address: ins13.toshiba.co.jp, ins3.toshiba.co.jp.
    #13

Nameservers

warn

18 of 18 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
a1-72.akam.net 193.108.91.72NOERROR, 4 ms, authoritativenoyes / yesrefused41824.7
a1-72.akam.net 2600:1401:2::48NOERROR, 4 ms, authoritativenoyes / yesrefused41824.11
a11-65.akam.net 84.53.139.65NOERROR, 4 ms, authoritativenoyes / yesrefused41824.8
a11-65.akam.net 2600:1480:1::41NOERROR, 3 ms, authoritativenoyes / yesrefused41824.8
a13-66.akam.net 2.22.230.66NOERROR, 5 ms, authoritativenoyes / yesrefused41824.11
a13-66.akam.net 2600:1480:800::42NOERROR, 5 ms, authoritativenoyes / yesrefused41824.8
a20-67.akam.net 95.100.175.67NOERROR, 5 ms, authoritativenoyes / yesrefused48878.30
a20-67.akam.net 2a02:26f0:67::43NOERROR, 4 ms, authoritativenoyes / yesrefused48878.31
a22-64.akam.net 23.211.61.64NOERROR, 5 ms, authoritativenoyes / yesrefused48878.32
a22-64.akam.net 2600:1480:7800::40NOERROR, 6 ms, authoritativenoyes / yesrefused48878.26
a8-65.akam.net 2.16.40.65NOERROR, 5 ms, authoritativenoyes / yesrefused48878.33
a8-65.akam.net 2600:1403:a::41NOERROR, 5 ms, authoritativenoyes / yesrefused48878.33
ins13.toshiba.co.jp 38.106.60.138NOERROR, 258 ms, authoritativenoyes / yesrefused-
ins3.toshiba.co.jp 106.186.93.107NOERROR, 258 ms, authoritativenoyes / yesrefused-
ns00.vips.ne.jp 210.174.191.1NOERROR, 235 ms, authoritativenoyes / yesrefused-
ns00.vips.ne.jp 2001:278:103b:1::1NOERROR, 248 ms, authoritativenoyes / yesrefused-
ns01.vips.ne.jp 165.76.4.170NOERROR, 240 ms, authoritativenoyes / yesrefused-
ns01.vips.ne.jp 2001:278:103c:1::1NOERROR, 249 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 18 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: a1-72.akam.net: "41824.7"; a1-72.akam.net: "41824.11"; a11-65.akam.net: "41824.8"; a13-66.akam.net: "41824.11"; a13-66.akam.net: "41824.8"; a20-67.akam.net: "48878.30"; a20-67.akam.net: "48878.31"; a22-64.akam.net: "48878.32"; a22-64.akam.net: "48878.26"; a8-65.akam.net: "48878.33". 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

info

serial 2225082901 · primary ins1.toshiba.co.jp

Found

Primary (MNAME)
ins1.toshiba.co.jp
Contact (RNAME)
postmaster.toshiba.co.jp
Serial
2225082901
Refresh / retry
3600 s / 300 s
Expire
3600000 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
a1-72.akam.net (193.108.91.72)2225082901
a1-72.akam.net (2600:1401:2::48)2225082901
a11-65.akam.net (84.53.139.65)2225082901
a11-65.akam.net (2600:1480:1::41)2225082901
a13-66.akam.net (2.22.230.66)2225082901
a13-66.akam.net (2600:1480:800::42)2225082901
a20-67.akam.net (95.100.175.67)2225082901
a20-67.akam.net (2a02:26f0:67::43)2225082901
a22-64.akam.net (23.211.61.64)2225082901
a22-64.akam.net (2600:1480:7800::40)2225082901
a8-65.akam.net (2.16.40.65)2225082901
a8-65.akam.net (2600:1403:a::41)2225082901
ins13.toshiba.co.jp (38.106.60.138)2225082901
ins3.toshiba.co.jp (106.186.93.107)2225082901
ns00.vips.ne.jp (210.174.191.1)2225082901
ns00.vips.ne.jp (2001:278:103b:1::1)2225082901
ns01.vips.ne.jp (165.76.4.170)2225082901
ns01.vips.ne.jp (2001:278:103c:1::1)2225082901

Checks

  • ✓ Serial 2225082901 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1h, retry 5m, expire 1000h, negative TTL 1h.
  • i
    Hidden master
    The primary nameserver ins1.toshiba.co.jp is not listed as a nameserver: a hidden master that only feeds the public secondaries. That is a common setup; make sure it is not reachable for zone transfers from outside.
    #24
  • ✓ Contact postmaster@toshiba.co.jp #25
    The SOA RNAME postmaster.toshiba.co.jp means postmaster@toshiba.co.jp.
  • ✓ Timestamp serial #26
    The serial 2225082901 is a Unix timestamp (2040-07-05 06:35 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

12 records at the apex

Found

Read from
193.108.91.72:53
TypeValueTTL
SOAins1.toshiba.co.jp. postmaster.toshiba.co.jp. 2225082901 3600 300 3600000 36003600
NSins3.toshiba.co.jp.3600
NSa20-67.akam.net.3600
NSa22-64.akam.net.3600
NSa8-65.akam.net.3600
NSa1-72.akam.net.3600
NSa13-66.akam.net.3600
NSins13.toshiba.co.jp.3600
NSns01.vips.ne.jp.3600
NSa11-65.akam.net.3600
NSns00.vips.ne.jp.3600
TXT"pardot755793=e407d74f0a343e7cf86e8220a48dbe44a4ae5ca39ab7205405f82b2397fefcd0"600

Checks

  • ✓ TTLs within range #32
    TTLs: NS 1h. The NS TTL at the parent is 2d and in the zone 1h; 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