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Hosting & Network
act-s.co.jp runs on AS131921, with email via Microsoft 365.
- Hosting network
- AS131921AS131921
- Managed DNS
- Self-hosted / other
- Microsoft 365
- IPv6 (AAAA)
- Not enabled
- CAA pinning
- None
Sits alongside 4,999+ other sites on AS131921. Stable here since we started watching (Sep 7, 2026).
The apex and www are the same hosting — the apex via A records, www via a CNAME to act-s.co.jp.
DNS Records for act-s.co.jp
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| act-s.co.jp | MX | 0 | acts-co-jp0i.mail.protection.outlook.com | |
| act-s.co.jp | MX | 0 | 32767 | ms68989979.msv1.invalid |
| act-s.co.jp | TXT | 0 | v=spf1 ip4:35.72.206.193 include:spf.protection.outlook.com -all | |
| act-s.co.jp | TXT | 0 | MS=2379B58F213E61D6355955AD5B68958A79E468E4 | |
| act-s.co.jp | TXT | 0 | MS=ms68989979 | |
| act-s.co.jp | TXT | 0 | anthropic-domain-verification-xm02md=sKiaSfA1f0hncFiTH4qRMNzDq | |
| act-s.co.jp | NS | 0 | 02.dnsv.jp | |
| act-s.co.jp | NS | 0 | 04.dnsv.jp | |
| act-s.co.jp | NS | 0 | 03.dnsv.jp | |
| act-s.co.jp | NS | 0 | 01.dnsv.jp | |
| act-s.co.jp | A | 0 | 153.123.7.54 | |
| act-s.co.jp | SOA | 300 | 01.dnsv.jp hostmaster.dnsv.jp 1779172569 3600 900 604800 300 | |
| www.act-s.co.jp | A | 0 | 153.123.7.54 | |
| www.act-s.co.jp | CNAME | 0 | act-s.co.jp | |
| www.act-s.co.jp | MX | 0 | acts-co-jp0i.mail.protection.outlook.com | |
| www.act-s.co.jp | MX | 0 | 32767 | ms68989979.msv1.invalid |
| www.act-s.co.jp | TXT | 0 | v=spf1 ip4:35.72.206.193 include:spf.protection.outlook.com -all | |
| www.act-s.co.jp | TXT | 0 | MS=ms68989979 | |
| www.act-s.co.jp | TXT | 0 | anthropic-domain-verification-xm02md=sKiaSfA1f0hncFiTH4qRMNzDq | |
| www.act-s.co.jp | TXT | 0 | MS=2379B58F213E61D6355955AD5B68958A79E468E4 | |
| www.act-s.co.jp | SOA | 300 | 01.dnsv.jp hostmaster.dnsv.jp 1779172569 3600 900 604800 300 | |
| www.act-s.co.jp | NS | 0 | 02.dnsv.jp | |
| www.act-s.co.jp | NS | 0 | 04.dnsv.jp | |
| www.act-s.co.jp | NS | 0 | 03.dnsv.jp | |
| www.act-s.co.jp | NS | 0 | 01.dnsv.jp |
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About DNS Records
DNS (Domain Name System) records are instructions that provide information about a domain, including its IP addresses, mail servers, and other services. Common record types include:
- SOA (Start of Authority) - Contains administrative information about the zone
- NS (Nameserver) - Specifies authoritative nameservers for the domain
- A (Address) - Maps a domain to an IPv4 address
- AAAA - Maps a domain to an IPv6 address
- CNAME (Canonical Name) - Creates an alias pointing to another domain
- MX (Mail Exchange) - Specifies mail servers for the domain