captcha.co - robtex.com
captcha.co
| DNSSEC | ⚠️ Not signed | ||||||
| A | 54.237.57.21🇺🇸 Amazon54.237.0.0/16 EC2 IAD prefix | ||||||
| PTR | ns1.namepros-dns.com | ||||||
| NS | ns1.namepros-dns.com ⭐ | ||||||
| A | 54.237.57.21🇺🇸 Amazon54.237.0.0/16 EC2 IAD prefix | ||||||
| PTR | ns1.namepros-dns.com | ||||||
| NS | ns2.zss5p6352r53spzb3phzhs8p.ns.namepros-dns.is ⚠️ Not in parent delegation | ||||||
| A | 3.233.30.191🇺🇸 Amazon3.224.0.0/12 EC2 IAD prefix | ||||||
| PTR | ns2.namepros-dns.com | ||||||
| NS | zss5p6352r53spzb3phzhs8pdh6583j8.ns.namepros-dns.is ⚠️ Not in zone NS records | ||||||
| A | 3.233.30.191🇺🇸 Amazon3.224.0.0/12 EC2 IAD prefix | ||||||
| PTR | ns2.namepros-dns.com | ||||||
| TXT | v=spf1 -all | ||||||
| SOA | ns1.namepros-dns.comdns@namepros.com serial=13036445 | ||||||
co
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | ns0.centralnic.net ⭐ | ||||||
| NS | a.registrydns.co | ||||||
| NS | b.registrydns.co | ||||||
| NS | c.registrydns.co | ||||||
| NS | d.registrydns.co | ||||||
| SOA | ns0.centralnic.nethostmaster@centralnic.net serial=1759653662 | ||||||
Subdomains
mail.captcha.co |
Same first word
Similar names
cathcap.com |
capchat.com |
chatcap.com |
chatcpa.com |
cpachat.net |
pcachat.com |
pcachat.fr |
chatcap.in |
achatpc.fr |
pacchat.com |
pacatch.com |
achatpc.com |
cpachat.com |
pcachat.net |
DNS History
13 records (4 active, 9 former)
○NSbuy.internettraffic.com2015-08-07 → 2016-08-16 · 7 obs
● 2015-11-25 07:43:58
○ 2015-12-22 08:51:50
● 2016-01-07 11:54:58
● 2016-08-16 02:14:52
○ 2026-02-22 10:07:58
○ 2026-05-09 06:03:38
●NSns1.namepros-dns.com2026-02-22 → 2026-05-09 · 3 obs
● 2026-02-22 10:07:58
● 2026-05-09 06:03:38
●NSns2.zss5p6352r53spzb3phzhs8p.ns.namepros-dns.is2026-02-22 → 2026-05-09 · 3 obs
● 2026-02-22 10:07:58
● 2026-05-09 06:03:38
○NSsell.internettraffic.com2015-08-07 → 2016-08-16 · 7 obs
● 2015-11-25 07:43:58
○ 2015-12-22 08:51:50
● 2016-01-07 11:54:58
● 2016-08-16 02:14:52
○ 2026-02-22 10:07:58
○ 2026-05-09 06:03:38
●NSzss5p6352r53spzb3phzhs8pdh6583j8.ns.namepros-dns.is2026-02-22 → 2026-05-09 · 3 obs
● 2026-02-22 10:07:58
● 2026-05-09 06:03:38
○A208.87.35.1042016-04-25 → 2016-04-25 · 4 obs
● 2016-04-25 17:39:48
○ 2016-06-12 13:25:28
○ 2026-05-09 06:03:38
○A52.22.183.582015-12-22 → 2015-12-22 · 4 obs
● 2015-12-22 08:51:50
○ 2016-01-07 11:54:58
○ 2026-05-09 06:03:38
○A54.174.168.1842015-12-22 → 2015-12-22 · 4 obs
● 2015-12-22 08:51:50
○ 2016-01-07 11:54:58
○ 2026-05-09 06:03:38
●A54.237.57.212026-02-22 → 2026-05-09 · 3 obs
● 2026-02-22 10:07:58
● 2026-05-09 06:03:38
○A69.172.201.1532016-06-12 → 2016-08-16 · 5 obs
● 2016-06-12 13:25:28
● 2016-08-16 02:14:52
○ 2026-02-22 10:07:58
○ 2026-05-09 06:03:38
○A69.172.201.2082015-08-07 → 2016-01-07 · 6 obs
● 2015-11-25 07:43:58
○ 2015-12-22 08:51:50
● 2016-01-07 11:54:58
○ 2016-04-25 17:39:48
○ 2026-05-09 06:03:38
○CNAMEpr-co-suspensions.neuweb.biz2015-12-22 → 2015-12-22 · 3 obs
○ 2016-01-07 11:54:58
○ 2026-05-09 06:03:38
○CNAMEws-pr-web-suspensionpages-1962938698.us-east-1.elb.amazonaws.com2015-12-22 → 2015-12-22 · 3 obs
○ 2016-01-07 11:54:58
○ 2026-05-09 06:03:38
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| co | c.registrydns.co, b.registrydns.co, d.registrydns.co, a.registrydns.co | - |
| captcha.co | zss5p6352r53spzb3phzhs8pdh6583j8.ns.namepros-dns.is, ns1.namepros-dns.com | - |
✅ Authoritative Response
Server:54.237.57.21
NS records: zss5p6352r53spzb3phzhs8pdh6583j8.ns.namepros-dns.is, ns1.namepros-dns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for captcha.co (unsigned zone)
⏱️ Timing
Total: 481ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 54.237.57.21 |
| NS | 2 | ns1.namepros-dns.com, ns2.zss5p6352r53spzb3phzhs8p.ns.namepros |
| TXT | 1 | v=spf1 -all |
| SOA | 1 | ns1.namepros-dns.com dns.namepros.com |
Analysis
Hierarchy
captcha.co is the parent of mail.captcha.co.
IP Addresses
captcha.co resolves to a single IP: 54.237.57.21.
Other host names, for instance asburyumc.com, centaurusresources.com, pop3.tlsbv.com, vgb.at and muscularsclerosis.com share IP numbers with captcha.co.
Name Servers
captcha.co delegates to three name servers: ns1.namepros-dns.com, zss5p6352r53spzb3phzhs8pdh6583j8.ns.namepros-dns.is and ns2.zss5p6352r53spzb3phzhs8p.ns.namepros-dns.is.
captcha.co shares some name servers with other domains, for example at724.com, kiddio.com, vulva.us, mindlabs.org and tokma.com.
these name servers are often used with ns2.abdulbasit.ns.namepros-dns.is, ns2.namepros-dns.is, ns2.brokerage.ns.namepros-dns.is, d6js38h8dps2sps8s338hj5zphjmfj52.ns.namepros-dns.is, 2sb852b9bjp5pjhj3p5f23h3jhp9b59b.ns.namepros-dns.is, ns1.afternic.com, ns2.afternic.com, verification-vpgpzsqa3cv4haccypio4o.ns101.verify.hn, 2rdsmh2br22hsppdbrhmzf99zsdp2fpj.ns.namepros-dns.is and ns2.gritbrokerage.ns.namepros-dns.is.
Host names with a single IP:
ns1.namepros-dns.com resolves to 54.237.57.21
zss5p6352r53spzb3phzhs8pdh6583j8.ns.namepros-dns.is resolves to 3.233.30.191
ns2.zss5p6352r53spzb3phzhs8p.ns.namepros-dns.is resolves to 3.233.30.191
Host names that resolve to 3.233.30.191: zss5p6352r53spzb3phzhs8pdh6583j8.ns.namepros-dns.is and ns2.zss5p6352r53spzb3phzhs8p.ns.namepros-dns.is