Domain technical report
GIGAZINE（ギガジン）
gigazine.net
日々のあらゆるシーンで役立つ情報を提供するIT系ニュースサイト。毎日更新中。
IPv42
IPv62
MX1
NS2
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84
Total
85
DNS
90
Email
73
Security
70
Network
100
Availability
Domaingigazine.net
IPv42
IPv62
MX records1
StatusActive
DiagnosticsMain findings and recommendations
IPv4 (A)30 / 30 pts · Dns
2 IPv4 address(es) detected.
IPv6 (AAAA)10 / 10 pts · Dns
2 IPv6 address(es) detected.
Name server redundancy20 / 20 pts · Dns
2 NS record(s); 2 or more required.
SOA record10 / 10 pts · Dns
Authoritative zone record.
DNSSEC chain0 / 15 pts · Dns
Both DS and DNSKEY are required.
CAA policy5 / 5 pts · Dns
Certificate authority restriction.
DNS propagation10 / 10 pts · Dns
Agreement between public resolvers.
MX records20 / 20 pts · Mail
1 MX record(s).
SPF25 / 25 pts · Mail
SPF policy published.
DMARC25 / 25 pts · Mail
DMARC policy published.
DKIM20 / 20 pts · Mail
A DKIM selector was verified.
MTA-STS0 / 5 pts · Mail
Mail transport policy.
TLS-RPT0 / 5 pts · Mail
TLS reporting policy.
Valid TLS certificate55 / 55 pts · Security
67 day(s) remaining.
Certificate lifetime10 / 10 pts · Security
Full points require at least 30 days remaining.
HTTP security headers8 / 35 pts · Security
2 of 9 evaluated headers detected.
PTR reverse DNS0 / 30 pts · Network
PTR not detected.
IPv4 diversity35 / 35 pts · Network
Two or more IPv4 addresses receive full points.
IPv6 connectivity35 / 35 pts · Network
AAAA availability.
DNS resolution40 / 40 pts · Availability
At least one address family must resolve.
HTTP response40 / 40 pts · Availability
HTTP/2 200
HTTPS final URL20 / 20 pts · Availability
Final URL uses HTTPS.
DNS and emailPublished records and email configuration
A
2 record(s)172.66.132.177 172.66.137.149
AAAA
2 record(s)2606:4700:10::ac42:8995 2606:4700:10::ac42:84b1
CNAME
0 record(s)—
Not configured
MX
1 record(s)10 sapient.sakura.ne.jp.
TXT
7 record(s)"google-site-verification=zq3k6nB_syyZtKpAzHh2rM_RRyXHeqIxpC377asLLhE" "v=spf1 a:www378.sakura.ne.jp a:mail.gigazine.net ~all" "brave-ledger-verification=ce67071ee6bb5efec458cd60a47299234bc86590de83c5351b37681646360195" "_globalsign-domain-verification=EVpR_0qIRJibzuIPlkR-6SSFugToRedJEZQqrv_W6W" "google-site-verification=8oW_BxmO0QGKHPnkMepoGB2W7Y7X6eQrR0cPhqE0YHo" "pinterest-site-verification=d8180ed0ed08127e13d28392f97f516a" "google-site-verification=6SpFzpuDM0-XJCT15e0ZPLFK4wFK7wT3FsSigoI7Qp0"
NS
2 record(s)lex.ns.cloudflare.com. amanda.ns.cloudflare.com.
SOA
1 record(s)amanda.ns.cloudflare.com. dns.cloudflare.com. 2409840410 10000 2400 604800 1800
CAA
10 record(s)0 issuewild "ssl.com" 0 issuewild "digicert.com; cansignhttpexchanges=yes" 0 issuewild "letsencrypt.org" 0 issue "ssl.com" 0 issue "comodoca.com" 0 issue "pki.goog; cansignhttpexchanges=yes" 0 issuewild "pki.goog; cansignhttpexchanges=yes" 0 issuewild "comodoca.com" 0 issue "letsencrypt.org" 0 issue "digicert.com; cansignhttpexchanges=yes"
DS
0 record(s)—
Not configured
DNSKEY
0 record(s)—
Not configured
RRSIG
0 record(s)—
Not configured
NSEC
0 record(s)—
Not configured
NSEC3
0 record(s)—
Not configured
SRV
0 record(s)—
Not configured
NAPTR
0 record(s)—
Not configured
TLSA
0 record(s)—
Not configured
SSHFP
0 record(s)—
Not configured
SPF
Configuredv=spf1 a:www378.sakura.ne.jp a:mail.gigazine.net ~all
DMARC
Configuredv=DMARC1; p=quarantine; aspf=r; adkim=r; rua=mailto:report@gigazine.net
DKIM
Selector s1k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA35AJ4wFMoZE9lzeUvLL+Jv+CN/7wkV6aqEbRmPTwX43XakhiDnW2Za8QLQoWzZ+s4w9LZW0BZp6rk5clBvqj3wQ+TY420pdyA4C1SDWAYWqEtZZJ0sS+jMUDeg+2sS7FZaPMM6+ycu67CPYhbwVqIvtL+ZwDrSDdmN9xBPlWu3UqCYUO6CyvJaCcepuMBOqEhyTHwkelPiZqYXHA4n1OnThNkjdxuqCYcpfu7lmLIv8Ad9Hd0WXqlEhSAncem4lnfSGuCcrMSqJQpqBJ3s73YJaxddrfGCFs3WymuoMJu/g6yK2QhmgseuRppfMeYMyu4VopqEUuwcSFuJDc9rDu5QIDAQAB
Analyzed webpageMetadata and HTTP response
Title and description
ExtractedTitle
GIGAZINE（ギガジン）
Description
日々のあらゆるシーンで役立つ情報を提供するIT系ニュースサイト。毎日更新中。
Final URL
https://gigazine.net/
HTTP status
206
HTTP
Status
HTTP/2 200
Final URL
https://gigazine.net/
Version
3
Server
cloudflare
X-Powered-By
SSL and HTTP securityCertificate, protocol and security headers
SSL certificate
AvailableAvailable
Yes
Issuer
Google Trust Services
CN
gigazine.net
Valid from
2026-07-17T21:11:31-05:00
Valid until
2026-10-15T22:11:26-05:00
Days remaining
67
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384
Security headers
2 activeHSTSNot detected
Content Security PolicyImplemented
X-Content-Type-OptionsNot detected
X-Frame-OptionsImplemented
Referrer PolicyNot detected
Permissions PolicyNot detected
Cross-Origin-Opener-PolicyNot detected
Cross-Origin-Embedder-PolicyNot detected
Cross-Origin-Resource-PolicyNot detected
DNS propagationComparison across public resolvers
Public resolver comparison
ConsistentConsistent propagation
5 public resolvers queried.
ResolverServerResultLatency
Google
8.8.8.8172.66.132.177, 172.66.137.149
74,26 ms
Cloudflare
1.1.1.1172.66.132.177, 172.66.137.149
60,03 ms
Quad9
9.9.9.9172.66.132.177, 172.66.137.149
52,73 ms
OpenDNS
208.67.222.222172.66.132.177, 172.66.137.149
77,85 ms
AdGuard
94.140.14.14172.66.132.177, 172.66.137.149
88,74 ms
IP, geolocation and ASNAssociated network information
172.66.132.177
No datasuccess
No
country
region
city
asn
organization
isp
172.66.137.149
No datasuccess
No
country
region
city
asn
organization
isp
Visitor information
Visitorip
216.73.217.62
reverse
country
country_code
region
city
latitude
longitude
isp
organization
asn
timezone
browser
Other
os
Other
language
user_agent
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
is_bot
Yes
cloudflare
No
SMTPEmail port connectivity
sapient.sakura.ne.jp
Port 25: Closed/unreachable - 178.2 ms - Port 465: Closed/unreachable - 348.9 ms - Port 587: Closed/unreachable - 177.3 ms - 220 www378.sakura.ne.jp ESMTP Sendmail 8.15.2/8.15.2; Mon, 10 Aug 2026 07:39:27 +0900 (JST)