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Hosting & Network
21.edu.ar runs on Cloudflare, with DNS by Cloudflare and email via Microsoft 365.
- Hosting network
- CloudflareAS13335Cloudflare
- Managed DNS
- Cloudflare
- Microsoft 365
- IPv6 (AAAA)
- Not enabled
- CAA pinning
- None
Sits alongside 4,999+ other sites on Cloudflare. Stable here since we started watching (Jul 26, 2026).
The apex and www are the same hosting — the apex via A records.
DNS Records for 21.edu.ar
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| 21.edu.ar | NS | 0 | cleo.ns.cloudflare.com | |
| 21.edu.ar | NS | 0 | rita.ns.cloudflare.com | |
| 21.edu.ar | SOA | 1800 | cleo.ns.cloudflare.com dns.cloudflare.com 2410148224 10000 2400 604800 1800 | |
| 21.edu.ar | A | 0 | 104.20.36.222 | |
| 21.edu.ar | A | 0 | 172.66.147.153 | |
| 21.edu.ar | MX | 0 | 21-edu-ar.mail.protection.outlook.com | |
| 21.edu.ar | TXT | 0 | v=spf1 include:spf.protection.outlook.com -all | |
| 21.edu.ar | TXT | 0 | ih7spbd64u7io6luk4gee5hfvq | |
| 21.edu.ar | TXT | 0 | facebook-domain-verification=xrgr72cd2k0uy0fic8jurt4vk9df3v | |
| 21.edu.ar | TXT | 0 | apple-domain-verification=BpfTVvFZ3iSDaUah | |
| 21.edu.ar | TXT | 0 | obkqsihvgeleir613ho73qhl3g | |
| 21.edu.ar | TXT | 0 | apple-domain-verification=7SZUvy3gxWzJg2yxHN7A-KKIGDqvLgIRFMxlRLbke8I | |
| 21.edu.ar | TXT | 0 | o5sp1d73u28lgdtbdf0s2r5i1c | |
| 21.edu.ar | TXT | 0 | google-site-verification=B-2HOfDlCqvhYnkZ7sjG3z-ya8Kmf3Q8vOE-6xD0cS4 | |
| 21.edu.ar | TXT | 0 | MS=ms14239541 | |
| 21.edu.ar | TXT | 0 | pjacd5cjkqjk70bkuhgjfcp1tf | |
| www.21.edu.ar | A | 0 | 104.20.36.222 | |
| www.21.edu.ar | A | 0 | 172.66.147.153 |
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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