medibang.com

Checked 22 October 2026, 09:44 UTC · via 8.8.8.8
!Passed with warnings
25 passed 2 warnings 0 failed 4 info

Registration

info

.com generic · GMO Internet Group, Inc. d/b/a Onamae.com · expires 2027-09-30

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
GMO Internet Group, Inc. d/b/a Onamae.com
Registered
30 September 2013
Last changed
14 September 2026
Expires
30 September 2027
Status
active
Registry nameservers
ns-1487.awsdns-57.org, ns-1573.awsdns-04.co.uk, ns-220.awsdns-27.com, ns-810.awsdns-37.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 2027-09-30 #3
    The registration is valid until 2027-09-30 (342 days).
  • i
    No transfer lock
    The domain has no transfer lock (status: active). A registrar lock protects against unauthorized transfers.
    #4
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

info

ns-1487.awsdns-57.org, ns-1573.awsdns-04.co.uk, ns-220.awsdns-27.com, ns-810.awsdns-37.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns-1487.awsdns-57.org, ns-1573.awsdns-04.co.uk, ns-220.awsdns-27.com, ns-810.awsdns-37.net
NS in the zone
ns-1487.awsdns-57.org, ns-1573.awsdns-04.co.uk, ns-220.awsdns-27.com, ns-810.awsdns-37.net
NameserverAddressesNetwork (AS)Glue
ns-1487.awsdns-57.org205.251.197.207 2600:9000:5305:cf00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-1573.awsdns-04.co.uk205.251.198.37 2600:9000:5306:2500::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-220.awsdns-27.com205.251.192.220 2600:9000:5300:dc00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.192.220 2600:9000:5300:dc00::1
ns-810.awsdns-37.net205.251.195.42 2600:9000:5303:2a00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns-1487.awsdns-57.org, ns-1573.awsdns-04.co.uk, ns-220.awsdns-27.com, ns-810.awsdns-37.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-1487.awsdns-57.org 205.251.197.207NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns-1487.awsdns-57.org 2600:9000:5305:cf00::1NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-1573.awsdns-04.co.uk 205.251.198.37NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-1573.awsdns-04.co.uk 2600:9000:5306:2500::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-220.awsdns-27.com 205.251.192.220NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-220.awsdns-27.com 2600:9000:5300:dc00::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-810.awsdns-37.net 205.251.195.42NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns-810.awsdns-37.net 2600:9000:5303:2a00::1NOERROR, 4 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-220.awsdns-27.com

Found

Primary (MNAME)
ns-220.awsdns-27.com
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-1487.awsdns-57.org (205.251.197.207)1
ns-1487.awsdns-57.org (2600:9000:5305:cf00::1)1
ns-1573.awsdns-04.co.uk (205.251.198.37)1
ns-1573.awsdns-04.co.uk (2600:9000:5306:2500::1)1
ns-220.awsdns-27.com (205.251.192.220)1
ns-220.awsdns-27.com (2600:9000:5300:dc00::1)1
ns-810.awsdns-37.net (205.251.195.42)1
ns-810.awsdns-37.net (2600:9000:5303:2a00::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-220.awsdns-27.com 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

24 records at the apex

Found

Read from
205.251.197.207:53
TypeValueTTL
SOAns-220.awsdns-27.com. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400900
NSns-1487.awsdns-57.org.172800
NSns-1573.awsdns-04.co.uk.172800
NSns-220.awsdns-27.com.172800
NSns-810.awsdns-37.net.172800
A35.72.238.560
A13.192.28.16360
A18.177.164.19360
AAAA2406:da14:4c1:92d0:8157:666a:46bb:30c60
AAAA2406:da14:4c1:92c0:5de:8cb6:f4c8:b51160
AAAA2406:da14:4c1:92a0:a4e5:b87f:5674:965b60
MX10 aspmx.l.google.com.3600
MX20 alt1.aspmx.l.google.com.3600
MX20 alt2.aspmx.l.google.com.3600
MX30 aspmx2.googlemail.com.3600
MX30 aspmx3.googlemail.com.3600
MX30 aspmx4.googlemail.com.3600
MX30 aspmx5.googlemail.com.3600
TXT"atlassian-domain-verification=rsltbQbDMKIYqVC1QBB0-RHVsTLcdBI0hv2AX6MgJIFoOPyV0Tn4LVqVDfUisFCy"3600
TXT"f5b3bcbb27040f3e292045c5e2da99fe5d2fd2343cbad2852f07a3abd5c4cf48"3600
TXT"facebook-domain-verification=vmrx5sj9c65cbn3lqjtl1r8hlot3b7"3600
TXT"google-site-verification=89keKOzVf6Zo8GY8FoIfggOJ0OkHuvbyxoeZXWKcwf4"3600
TXT"google-site-verification=wPdTFnjocyh1j826eWCg3KdIikeShCTDNBFaPwjtOjA"3600
TXT"v=spf1 include:amazonses.com include:_spf.google.com include:sender.zcsend.jp ~all"3600

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (1m), AAAA (1m). Low TTLs are useful just before a planned change.
    #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