Domain report: j-cast.com

Registration

info

.com generic · Japan Registry Services Co., Ltd. · expires 2027-03-16

TLD: .com (generic)
ICANN policies apply: yes
Registrar: Japan Registry Services Co., Ltd.
Registered: 16 March 1999
Last changed: 14 March 2026
Expires: 16 March 2027
Status: client transfer prohibited
Registry nameservers: ns-1240.awsdns-27.org, ns-1656.awsdns-15.co.uk, ns-71.awsdns-08.com, ns-900.awsdns-48.net
RDAP server: https://rdap.verisign.com/com/v1/

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 2027-03-16 #3

The registration is valid until 2027-03-16 (144 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.

info

ns-1240.awsdns-27.org, ns-1656.awsdns-15.co.uk, ns-71.awsdns-08.com, ns-900.awsdns-48.net

Parent zone: com
Delegation from: a.gtld-servers.net (192.5.6.30)
NS at the parent: ns-1240.awsdns-27.org, ns-1656.awsdns-15.co.uk, ns-71.awsdns-08.com, ns-900.awsdns-48.net
NS in the zone: ns-1240.awsdns-27.org, ns-1656.awsdns-15.co.uk, ns-71.awsdns-08.com, ns-900.awsdns-48.net

Nameserver	Addresses	Network (AS)	Glue
ns-1240.awsdns-27.org	205.251.196.216 2600:9000:5304:d800::1	AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US	-
ns-1656.awsdns-15.co.uk	205.251.198.120 2600:9000:5306:7800::1	AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US	-
ns-71.awsdns-08.com	205.251.192.71 2600:9000:5300:4700::1	AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US	205.251.192.71 2600:9000:5300:4700::1
ns-900.awsdns-48.net	205.251.195.132 2600:9000:5303:8400::1	AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US	-

✓ 4 nameservers #6

Delegated to ns-1240.awsdns-27.org, ns-1656.awsdns-15.co.uk, ns-71.awsdns-08.com, ns-900.awsdns-48.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.

pass

8 of 8 addresses answer authoritatively

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
ns-1240.awsdns-27.org 205.251.196.216	NOERROR, 3 ms, authoritative	no	yes / yes	refused	-
ns-1240.awsdns-27.org 2600:9000:5304:d800::1	NOERROR, 7 ms, authoritative	no	yes / yes	refused	-
ns-1656.awsdns-15.co.uk 205.251.198.120	NOERROR, 9 ms, authoritative	no	yes / yes	refused	-
ns-1656.awsdns-15.co.uk 2600:9000:5306:7800::1	NOERROR, 9 ms, authoritative	no	yes / yes	refused	-
ns-71.awsdns-08.com 205.251.192.71	NOERROR, 9 ms, authoritative	no	yes / yes	refused	-
ns-71.awsdns-08.com 2600:9000:5300:4700::1	NOERROR, 9 ms, authoritative	no	yes / yes	refused	-
ns-900.awsdns-48.net 205.251.195.132	NOERROR, 4 ms, authoritative	no	yes / yes	refused	-
ns-900.awsdns-48.net 2600:9000:5303:8400::1	NOERROR, 4 ms, authoritative	no	yes / yes	refused	-

✓ 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.

pass

serial 1 · primary ns-1656.awsdns-15.co.uk

✓ 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-1656.awsdns-15.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.

warn

Not signed

info

10 records at the apex

Type	Value	TTL
SOA	ns-1656.awsdns-15.co.uk. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400	900
NS	ns-1240.awsdns-27.org.	172800
NS	ns-1656.awsdns-15.co.uk.	172800
NS	ns-71.awsdns-08.com.	172800
NS	ns-900.awsdns-48.net.	172800
A	210.172.212.52	300
A	210.172.200.251	300
MX	10 mail.j-cast.com.	3600
TXT	"google-site-verification=S5r5okGYNF_kGnxJUBsCxSn4TY5hpD2HxQMxTp1zkDA"	300
TXT	"v=spf1 include:spf-bma.mpme.jp include:_spf.salesforce.com +ip4:210.172.192.92 +ip4:124.35.54.210 +ip4:52.68.9.81 +ip4:54.65.221.72 +ip4:210.152.127.61 +ip4:210.152.127.74 +ip4:210.172.222.142 +ip4:210.172.222.152 +ip4:202.228.173.113/30 ~all"	300