instagram.courses - robtex.com
instagram.courses
| DNSSEC | โ ๏ธ Not signed | ||||||
| A | 2a03:2880:f003:c07:face:b00c:0:2๐บ๐ธ Facebook | ||||||
| PTR | edge-star6-shv-01-iad3.facebook.com | ||||||
| A | 31.13.66.4๐บ๐ธ Facebook | ||||||
| NS | a.ns.facebook.com โญ | ||||||
| A | 2a03:2880:f0fc:c:face:b00c:0:35๐บ๐ธ Facebook | ||||||
| PTR | a.ns.facebook.com | ||||||
| A | 129.134.30.12๐บ๐ธ Facebook | ||||||
| PTR | a.ns.facebook.com | ||||||
| NS | b.ns.facebook.com | ||||||
| A | 2a03:2880:f0fd:c:face:b00c:0:35๐บ๐ธ Facebook | ||||||
| PTR | b.ns.facebook.com | ||||||
| A | 129.134.31.12๐บ๐ธ Facebook | ||||||
| PTR | b.ns.facebook.com | ||||||
| NS | c.ns.facebook.com | ||||||
| A | 2a03:2880:f1fc:c:face:b00c:0:35๐บ๐ธ Facebook | ||||||
| PTR | c.ns.facebook.com | ||||||
| A | 185.89.218.12๐ฎ๐ฑ Facebook | ||||||
| PTR | c.ns.facebook.com | ||||||
| NS | d.ns.facebook.com | ||||||
| A | 2a03:2880:f1fd:c:face:b00c:0:35๐บ๐ธ Facebook | ||||||
| PTR | d.ns.facebook.com | ||||||
| A | 185.89.219.12๐ฎ๐ฑ Facebook | ||||||
| PTR | d.ns.facebook.com | ||||||
| TXT | v=spf1 -all | ||||||
| HTTPS | HTTP/2, HTTP/3 | ||||||
| HTTPS | HTTP/2, HTTP/3 | ||||||
| SOA | a.ns.facebook.comdns@facebook.com serial=4207849484 | ||||||
courses
| DNSSEC | ๐ Signed (DS record present) | ||||||
| NS | a.nic.courses โญ ๐ | ||||||
| NS | b.nic.courses ๐ | ||||||
| NS | c.nic.courses ๐ | ||||||
| NS | x.nic.courses ๐ | ||||||
| NS | y.nic.courses ๐ | ||||||
| NS | z.nic.courses ๐ | ||||||
| SOA | a.nic.coursesadmin@tldns.godaddy serial=1771504931 | ||||||
Same first word
Similar names
DNS History
8 records (6 active, 2 former)
โNSa.ns.facebook.com2026-02-16 โ 2026-02-19 ยท 2 obs
โ 2026-02-19 13:54:54
โNSb.ns.facebook.com2026-02-16 โ 2026-02-19 ยท 2 obs
โ 2026-02-19 13:54:54
โNSc.ns.facebook.com2026-02-16 โ 2026-02-19 ยท 2 obs
โ 2026-02-19 13:54:54
โNSd.ns.facebook.com2026-02-16 โ 2026-02-19 ยท 2 obs
โ 2026-02-19 13:54:54
โA157.240.214.12026-02-16 โ 2026-02-18 ยท 4 obs
โ 2026-02-18 23:29:16
โ 2026-02-19 13:54:50
โ 2026-02-19 13:54:54
โA2a03:2880:f003:c07:face:b00c:0:22026-02-19 โ 2026-02-19 ยท 4 obs
โ 2026-02-18 23:29:16
โ 2026-02-19 13:54:50
โ 2026-02-19 13:54:54
โA2a03:2880:f058:100:face:b00c:0:22026-02-16 โ 2026-02-18 ยท 4 obs
โ 2026-02-18 23:29:16
โ 2026-02-19 13:54:50
โ 2026-02-19 13:54:54
โA31.13.66.42026-02-19 โ 2026-02-19 ยท 4 obs
โ 2026-02-18 23:29:16
โ 2026-02-19 13:54:50
โ 2026-02-19 13:54:54
๐ DNS Trace
๐ Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| courses | a.nic.courses, b.nic.courses, c.nic.courses, x.nic.courses... | 12 records |
| instagram.courses | a.ns.facebook.com, b.ns.facebook.com, c.ns.facebook.com, d.ns.facebook.com | - |
โ Authoritative Response
Server: 129.134.30.12
NS records: a.ns.facebook.com, b.ns.facebook.com, c.ns.facebook.com, d.ns.facebook.com
๐ DNSSEC Status
โ ๏ธ Insecure (no DNSSEC)
No DS record for instagram.courses (unsigned zone)
โฑ๏ธ Timing
Total: 907ms | Queries: -
๐ Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 31.13.66.4 |
| AAAA | 1 | 2a03:2880:f003:c07:face:b00c:0:2 |
| NS | 4 | d.ns.facebook.com, c.ns.facebook.com... |
| TXT | 1 | v=spf1 -all |
| HTTPS | 2 | {"priority":2,"target":"star.fallback.c1, {"priority":1,"target":".","alpn":["h2", |
| SOA | 1 | a.ns.facebook.com dns.facebook.com |
๐ Glue Records Collected
Total: 12
In-bailiwick: 12 (a.nic.courses, b.nic.courses, c.nic.courses...)
AI analysis
The entity instagram.courses points to two IP numbers: 2a03:2880:f003:c07:face:b00c:0:2 and 31.13.66.4.
For instance, other host names connect-facebook-mobile.com, facebook.wang, star-nohsts.c10r.facebook.com, achat-followers-instagram.com and facebook.gy share IP numbers with instagram.courses.
instagram.courses is delegated to four name servers: a.ns.facebook.com, b.ns.facebook.com, c.ns.facebook.com and d.ns.facebook.com.
instagram.courses shares name servers with other domains at least partially, for example instameets.co, iaaa.com, postff.com, boomeranginstagram.es and facecbooi.com.
Host names with two IP numbers:
a.ns.facebook.com points to: 2a03:2880:f0fc:c:face:b00c:0:35 and 129.134.30.12
b.ns.facebook.com points to: 2a03:2880:f0fd:c:face:b00c:0:35 and 129.134.31.12
c.ns.facebook.com points to: 2a03:2880:f1fc:c:face:b00c:0:35 and 185.89.218.12
d.ns.facebook.com points to: 2a03:2880:f1fd:c:face:b00c:0:35 and 185.89.219.12