centuru21.com - robtex.com
centuru21.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 3.21.30.236🇺🇸 Amazon3.20.0.0/14 EC2 CMH prefix | ||||||
| PTR | ec2-3-21-30-236.us-east-2.compute.amazonaws.com | ||||||
| A | 3.138.52.249🇺🇸 Amazon3.136.0.0/13 EC2 CMH prefix | ||||||
| NS | ns-108.awsdns-13.com ⭐ | ||||||
| A | 2600:9000:5300:6c00::1🇺🇸 Amazon2600:9000:5300::/48 - CloudFront | ||||||
| PTR | ns-108.awsdns-13.com | ||||||
| A | 205.251.192.108🇺🇸 Amazon205.251.192.0/24 prefix | ||||||
| PTR | ns-108.awsdns-13.com | ||||||
| NS | ns-1192.awsdns-21.org | ||||||
| A | 2600:9000:5304:a800::1🇺🇸 Amazon2600:9000:5304::/48 - CloudFront | ||||||
| PTR | ns-1192.awsdns-21.org | ||||||
| A | 205.251.196.168🇺🇸 Amazon205.251.196.0/24 prefix | ||||||
| PTR | ns-1192.awsdns-21.org | ||||||
| NS | ns-1603.awsdns-08.co.uk | ||||||
| A | 2600:9000:5306:4300::1🇺🇸 Amazon2600:9000:5306::/48 - CloudFront | ||||||
| PTR | ns-1603.awsdns-08.co.uk | ||||||
| A | 205.251.198.67🇺🇸 Amazon205.251.198.0/24 prefix | ||||||
| PTR | ns-1603.awsdns-08.co.uk | ||||||
| NS | ns-890.awsdns-47.net | ||||||
| A | 2600:9000:5303:7a00::1🇺🇸 Amazon2600:9000:5303::/48 - CloudFront | ||||||
| PTR | ns-890.awsdns-47.net | ||||||
| A | 205.251.195.122🇺🇸 Amazon205.251.195.0/24 prefix | ||||||
| PTR | ns-890.awsdns-47.net | ||||||
| SOA | ns-108.awsdns-13.comawsdns-hostmaster@amazon.com serial=1 | ||||||
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=1778283171 | ||||||
Same first word
centuru21.com |
DNS History
13 records (6 active, 7 former)
●NSns-108.awsdns-13.com2020-04-04 → 2026-05-08 · 3 obs
● 2020-04-04 23:56:24
● 2026-05-08 23:59:58
●NSns-1192.awsdns-21.org2020-04-04 → 2026-05-08 · 3 obs
● 2020-04-04 23:56:24
● 2026-05-08 23:59:58
●NSns-1603.awsdns-08.co.uk2020-04-04 → 2026-05-08 · 3 obs
● 2020-04-04 23:56:24
● 2026-05-08 23:59:58
●NSns-890.awsdns-47.net2020-04-04 → 2026-05-08 · 3 obs
● 2020-04-04 23:56:24
● 2026-05-08 23:59:58
○NSns1.savvis.net2015-08-19 → 2017-04-03 · 4 obs
● 2017-04-03 13:24:42
○ 2020-04-04 23:56:24
○ 2026-05-08 23:59:58
○NSns2.savvis.net2015-08-19 → 2017-04-03 · 4 obs
● 2017-04-03 13:24:42
○ 2020-04-04 23:56:24
○ 2026-05-08 23:59:58
○NSns3.savvis.net2015-08-19 → 2017-04-03 · 4 obs
● 2017-04-03 13:24:42
○ 2020-04-04 23:56:24
○ 2026-05-08 23:59:58
○A216.91.43.682015-08-19 → 2017-04-03 · 4 obs
● 2017-04-03 13:24:42
○ 2020-04-04 23:56:24
○ 2026-05-08 23:59:58
●A3.138.52.2492026-05-05 → 2026-05-08 · 3 obs
● 2026-05-05 12:23:08
● 2026-05-08 23:59:58
○A3.14.0.622020-04-04 → 2020-04-04 · 4 obs
● 2020-04-04 23:56:24
○ 2026-05-05 12:23:08
○ 2026-05-08 23:59:58
○A3.18.9.2002020-04-04 → 2020-04-04 · 4 obs
● 2020-04-04 23:56:24
○ 2026-05-05 12:23:08
○ 2026-05-08 23:59:58
●A3.21.30.2362026-05-08 → 2026-05-08 · 3 obs
● 2026-05-08 06:47:54
● 2026-05-08 23:59:58
○A3.23.162.842026-05-05 → 2026-05-05 · 4 obs
● 2026-05-05 12:23:08
○ 2026-05-08 06:47:54
○ 2026-05-08 23:59:58
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | f.gtld-servers.net, k.gtld-servers.net, m.gtld-servers.net, g.gtld-servers.net... | - |
| centuru21.com | ns-108.awsdns-13.com, ns-890.awsdns-47.net, ns-1603.awsdns-08.co.uk, ns-1192.awsdns-21.org | 2 records |
✅ Authoritative Response
Server:205.251.192.108
NS records: ns-108.awsdns-13.com, ns-890.awsdns-47.net, ns-1603.awsdns-08.co.uk, ns-1192.awsdns-21.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for centuru21.com (unsigned zone)
⏱️ Timing
Total: 349ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 3.21.30.236, 3.138.52.249 |
| NS | 4 | ns-108.awsdns-13.com, ns-1192.awsdns-21.org... |
| SOA | 1 | ns-108.awsdns-13.com awsdns-hostmaster.a |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns-108.awsdns-13.com, ns-108.awsdns-13.com)
Analysis
IP Addresses
centuru21.com resolves to two IP numbers: 3.21.30.236 and 3.138.52.249.
other host names including c21smoothmove.com, century21southcarolina.com, century21homeimprovements.info, century21newjersey.com and century21thomasrealty.com share IP numbers with centuru21.com.
Name Servers
centuru21.com is delegated to four name servers: ns-108.awsdns-13.com, ns-890.awsdns-47.net, ns-1192.awsdns-21.org and ns-1603.awsdns-08.co.uk.
centuru21.com at least partially shares name servers with other domains, for instance soosoccer.org, signsofcircle.graphics, iwk288.com, tobiassteen.se and usherlawfirm.com.
Host names with two IP numbers:
ns-108.awsdns-13.com points to 2600:9000:5300:6c00::1 and 205.251.192.108; ns-890.awsdns-47.net points to 2600:9000:5303:7a00::1 and 205.251.195.122; ns-1192.awsdns-21.org points to 2600:9000:5304:a800::1 and 205.251.196.168; ns-1603.awsdns-08.co.uk points to 2600:9000:5306:4300::1 and 205.251.198.67.