centuty21.com - robtex.com
centuty21.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-1200.awsdns-22.org ⭐ | ||||||
| A | 2600:9000:5304:b000::1🇺🇸 Amazon2600:9000:5304::/48 - CloudFront | ||||||
| PTR | ns-1200.awsdns-22.org | ||||||
| A | 205.251.196.176🇺🇸 Amazon205.251.196.0/24 prefix | ||||||
| PTR | ns-1200.awsdns-22.org | ||||||
| NS | ns-1850.awsdns-39.co.uk | ||||||
| A | 2600:9000:5307:3a00::1🇺🇸 Amazon2600:9000:5307::/48 - CloudFront | ||||||
| PTR | ns-1850.awsdns-39.co.uk | ||||||
| A | 205.251.199.58🇺🇸 Amazon205.251.199.0/24 prefix | ||||||
| PTR | ns-1850.awsdns-39.co.uk | ||||||
| NS | ns-317.awsdns-39.com | ||||||
| A | 2600:9000:5301:3d00::1🇺🇸 Amazon2600:9000:5301::/48 - CloudFront | ||||||
| PTR | ns-317.awsdns-39.com | ||||||
| A | 205.251.193.61🇺🇸 Amazon205.251.193.0/24 prefix | ||||||
| PTR | ns-317.awsdns-39.com | ||||||
| NS | ns-918.awsdns-50.net | ||||||
| A | 2600:9000:5303:9600::1🇺🇸 Amazon2600:9000:5303::/48 - CloudFront | ||||||
| PTR | ns-918.awsdns-50.net | ||||||
| A | 205.251.195.150🇺🇸 Amazon205.251.195.0/24 prefix | ||||||
| PTR | ns-918.awsdns-50.net | ||||||
| SOA | ns-1200.awsdns-22.orgawsdns-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=1778312616 | ||||||
Same first word
centuty21.com |
DNS History
12 records (6 active, 6 former)
●NSns-1200.awsdns-22.org2026-05-05 → 2026-05-09 · 3 obs
● 2026-05-05 12:27:12
● 2026-05-09 07:49:24
●NSns-1850.awsdns-39.co.uk2026-05-05 → 2026-05-09 · 3 obs
● 2026-05-05 12:27:12
● 2026-05-09 07:49:24
●NSns-317.awsdns-39.com2026-05-05 → 2026-05-09 · 3 obs
● 2026-05-05 12:27:12
● 2026-05-09 07:49:24
●NSns-918.awsdns-50.net2026-05-05 → 2026-05-09 · 3 obs
● 2026-05-05 12:27:12
● 2026-05-09 07:49:24
○NSns1.savvis.net2015-06-26 → 2017-03-29 · 4 obs
● 2017-03-29 06:10:04
○ 2026-05-05 12:27:12
○ 2026-05-09 07:49:24
○NSns2.savvis.net2015-06-26 → 2017-03-29 · 4 obs
● 2017-03-29 06:10:04
○ 2026-05-05 12:27:12
○ 2026-05-09 07:49:24
○NSns3.savvis.net2015-06-26 → 2017-03-29 · 4 obs
● 2017-03-29 06:10:04
○ 2026-05-05 12:27:12
○ 2026-05-09 07:49:24
○NSns4.savvis.net2015-06-26 → 2017-03-29 · 4 obs
● 2017-03-29 06:10:04
○ 2026-05-05 12:27:12
○ 2026-05-09 07:49:24
○NSns5.savvis.net2015-06-26 → 2017-03-29 · 4 obs
● 2017-03-29 06:10:04
○ 2026-05-05 12:27:12
○ 2026-05-09 07:49:24
●A3.138.52.2492026-05-05 → 2026-05-09 · 2 obs
● 2026-05-09 07:49:24
●A3.21.30.2362026-05-08 → 2026-05-09 · 3 obs
● 2026-05-08 06:47:54
● 2026-05-09 07:49:24
○A3.23.162.842026-05-05 → 2026-05-05 · 3 obs
○ 2026-05-08 06:47:54
○ 2026-05-09 07:49:24
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| centuty21.com | ns-317.awsdns-39.com, ns-918.awsdns-50.net, ns-1200.awsdns-22.org, ns-1850.awsdns-39.co.uk | 2 records |
✅ Authoritative Response
Server:205.251.199.58
NS records: ns-317.awsdns-39.com, ns-918.awsdns-50.net, ns-1200.awsdns-22.org, ns-1850.awsdns-39.co.uk
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for centuty21.com (unsigned zone)
⏱️ Timing
Total: 267ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 3.138.52.249, 3.21.30.236 |
| NS | 4 | ns-1200.awsdns-22.org, ns-1850.awsdns-39.co.uk... |
| SOA | 1 | ns-1200.awsdns-22.org awsdns-hostmaster. |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns-317.awsdns-39.com, ns-317.awsdns-39.com)
Analysis
IP Addresses
Two IP numbers are pointed to by centuty21.com: 3.21.30.236 and 3.138.52.249.
other host names include century21wa.com, century21newmexico.com, centurt21.com, century21texas.com and c21smoothmoves.com; they share IP numbers with centuty21.com.
Name Servers
centuty21.com delegates to four name servers: ns-317.awsdns-39.com, ns-918.awsdns-50.net, ns-1200.awsdns-22.org and ns-1850.awsdns-39.co.uk.
centuty21.com at least partially shares name servers with other domains, for instance miatlantic.eu, d3q7gbm7cxeftz.cloudfront.net, evsmart.net, forbes.co.uk and pdfplusreadpdf.com.
Host names with two IP numbers: ns-317.awsdns-39.com points to 2600:9000:5301:3d00::1 and 205.251.193.61; ns-918.awsdns-50.net points to 2600:9000:5303:9600::1 and 205.251.195.150; ns-1200.awsdns-22.org points to 2600:9000:5304:b000::1 and 205.251.196.176; ns-1850.awsdns-39.co.uk points to 2600:9000:5307:3a00::1 and 205.251.199.58.