costudies.com - robtex.com
costudies.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 149.28.42.111🇺🇸 AS-VULTR149.28.32.0/19 Vultr Assigned Prefix | ||||||
| PTR | 149.28.42.111.vultrusercontent.com | ||||||
| A | 149.28.63.113🇺🇸 AS-VULTR149.28.32.0/19 Vultr Assigned Prefix | ||||||
| NS | ns1.sawsells.com ⭐ | ||||||
| A | 172.64.52.32🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| A | 172.64.53.159🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| NS | ns2.sawsells.com | ||||||
| A | 172.64.52.174🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| A | 172.64.53.214🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| SOA | ns1.sawsells.comhostmaster@costudies.com 2026-03-30 #7 | ||||||
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1777209856 | ||||||
Subdomains
www.costudies.com |
Same first word
costudies.com |
Similar names
DNS History
13 records (4 active, 9 former)
●NSns1.sawsells.com2026-04-07 → 2026-04-26 · 3 obs
● 2026-04-07 09:54:24
● 2026-04-26 13:36:02
●NSns2.sawsells.com2026-04-07 → 2026-04-26 · 3 obs
● 2026-04-07 09:54:24
● 2026-04-26 13:36:02
○NSns65.domaincontrol.com2016-07-02 → 2020-02-19 · 4 obs
● 2020-02-19 18:27:14
○ 2026-04-07 09:54:24
○ 2026-04-26 13:36:02
○NSns66.domaincontrol.com2016-07-02 → 2020-02-19 · 4 obs
● 2020-02-19 18:27:14
○ 2026-04-07 09:54:24
○ 2026-04-26 13:36:02
○MXalt1.aspmx.l.google.com2016-07-02 → 2020-02-19 · 4 obs
● 2020-02-19 18:27:14
○ 2026-04-07 09:54:24
○ 2026-04-26 13:36:02
○MXalt2.aspmx.l.google.com2016-07-02 → 2020-02-19 · 4 obs
● 2020-02-19 18:27:14
○ 2026-04-07 09:54:24
○ 2026-04-26 13:36:02
○MXaspmx.l.google.com2016-07-02 → 2020-02-19 · 4 obs
● 2020-02-19 18:27:14
○ 2026-04-07 09:54:24
○ 2026-04-26 13:36:02
○MXaspmx2.googlemail.com2016-07-02 → 2020-02-19 · 4 obs
● 2020-02-19 18:27:14
○ 2026-04-07 09:54:24
○ 2026-04-26 13:36:02
○MXaspmx3.googlemail.com2016-07-02 → 2020-02-19 · 4 obs
● 2020-02-19 18:27:14
○ 2026-04-07 09:54:24
○ 2026-04-26 13:36:02
●A149.28.42.1112026-04-07 → 2026-04-26 · 3 obs
● 2026-04-07 09:54:24
● 2026-04-26 13:36:02
●A149.28.63.1132026-04-07 → 2026-04-26 · 3 obs
● 2026-04-07 09:54:24
● 2026-04-26 13:36:02
○A52.74.236.1802020-02-19 → 2020-02-19 · 4 obs
● 2020-02-19 18:27:14
○ 2026-04-07 09:54:24
○ 2026-04-26 13:36:02
○A54.179.178.1462016-07-02 → 2017-02-14 · 4 obs
● 2017-02-14 19:18:14
○ 2020-02-19 18:27:14
○ 2026-04-26 13:36:02
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| costudies.com | ns1.sawsells.com, ns2.sawsells.com | 8 records |
✅ Authoritative Response
Server:172.64.52.32
NS records: ns1.sawsells.com, ns2.sawsells.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for costudies.com (unsigned zone)
⏱️ Timing
Total: 330ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 149.28.42.111, 149.28.63.113 |
| NS | 2 | ns1.sawsells.com, ns2.sawsells.com |
| SOA | 1 | ns1.sawsells.com hostmaster.costudies.co |
📌 Glue Records Collected
Total: 8
Out-of-bailiwick: 8 (ns1.sawsells.com, ns1.sawsells.com, ns1.sawsells.com...)
Analysis
Hierarchy
costudies.com is the parent of www.costudies.com.
IP Addresses
costudies.com resolves to two IPs: 149.28.42.111 and 149.28.63.113.
other host names for instance edmonton.me, domainsly.com, email-servers.net, helladic.com and idomeneo.net share IP numbers with costudies.com.
Name Servers
costudies.com is delegated to two name servers: ns1.sawsells.com and ns2.sawsells.com.
costudies.com shares the same name server setup as other domains, for example bopi.co.uk, vilma.co.uk, photoguru.co.uk, iforums.com and newstalk.co.uk.
costudies.com at least partially shares name servers with other domains, for example encausa.com and ieven.com.
These name servers are often used with ns1.atom.com and ns2.atom.com.
Host names with two IP numbers:
ns1.sawsells.com points to 172.64.52.32 and 172.64.53.159
ns2.sawsells.com points to 172.64.52.174 and 172.64.53.214