century21cb.com - robtex.com
century21cb.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 76.223.5.249🇺🇸 Amazon76.223.0.0/20 | ||||||
| PTR | a2391dc0304a99e02.awsglobalaccelerator.com | ||||||
| A | 166.117.1.52🇺🇸 Amazon166.117.0.0/20 | ||||||
| NS | ns-1549.awsdns-01.co.uk ⭐ | ||||||
| A | 2600:9000:5306:d00::1🇺🇸 Amazon2600:9000:5306::/48 - CloudFront | ||||||
| PTR | ns-1549.awsdns-01.co.uk | ||||||
| A | 205.251.198.13🇺🇸 Amazon205.251.198.0/24 prefix | ||||||
| PTR | ns-1549.awsdns-01.co.uk | ||||||
| NS | ns-1149.awsdns-15.org | ||||||
| A | 2600:9000:5304:7d00::1🇺🇸 Amazon2600:9000:5304::/48 - CloudFront | ||||||
| PTR | ns-1149.awsdns-15.org | ||||||
| A | 205.251.196.125🇺🇸 Amazon205.251.196.0/24 prefix | ||||||
| PTR | ns-1149.awsdns-15.org | ||||||
| NS | ns-497.awsdns-62.com | ||||||
| A | 2600:9000:5301:f100::1🇺🇸 Amazon2600:9000:5301::/48 - CloudFront | ||||||
| PTR | ns-497.awsdns-62.com | ||||||
| A | 205.251.193.241🇺🇸 Amazon205.251.193.0/24 prefix | ||||||
| PTR | ns-497.awsdns-62.com | ||||||
| NS | ns-966.awsdns-56.net | ||||||
| A | 2600:9000:5303:c600::1🇺🇸 Amazon2600:9000:5303::/48 - CloudFront | ||||||
| PTR | ns-966.awsdns-56.net | ||||||
| A | 205.251.195.198🇺🇸 Amazon205.251.195.0/24 prefix | ||||||
| PTR | ns-966.awsdns-56.net | ||||||
| SOA | ns-1549.awsdns-01.co.ukawsdns-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=1778631446 | ||||||
Same first word
century21cb.com |
DNS History
10 records (6 active, 4 former)
●NSns-1149.awsdns-15.org2026-05-05 → 2026-05-13 · 3 obs
● 2026-05-05 12:21:42
● 2026-05-13 00:46:22
●NSns-1549.awsdns-01.co.uk2026-05-05 → 2026-05-13 · 3 obs
● 2026-05-05 12:21:42
● 2026-05-13 00:46:22
●NSns-497.awsdns-62.com2026-05-05 → 2026-05-13 · 3 obs
● 2026-05-05 12:21:42
● 2026-05-13 00:46:22
●NSns-966.awsdns-56.net2026-05-05 → 2026-05-13 · 3 obs
● 2026-05-05 12:21:42
● 2026-05-13 00:46:22
○NSns15.worldnic.com2015-08-01 → 2018-07-24 · 4 obs
● 2018-07-24 03:32:12
○ 2026-05-05 12:21:42
○ 2026-05-13 00:46:22
○NSns16.worldnic.com2015-08-01 → 2018-07-24 · 4 obs
● 2018-07-24 03:32:12
○ 2026-05-05 12:21:42
○ 2026-05-13 00:46:22
○MXp.webcom.ctmail.com2015-11-22 → 2018-07-24 · 6 obs
○ 2016-02-23 08:14:02
● 2016-07-03 10:31:54
● 2018-07-24 03:32:12
○ 2026-05-05 12:21:42
○ 2026-05-13 00:46:22
●A166.117.1.522026-05-05 → 2026-05-13 · 3 obs
● 2026-05-05 12:21:42
● 2026-05-13 00:46:22
○A205.178.189.1312015-08-01 → 2018-07-24 · 4 obs
● 2018-07-24 03:32:12
○ 2026-05-05 12:21:42
○ 2026-05-13 00:46:22
●A76.223.5.2492026-05-05 → 2026-05-13 · 3 obs
● 2026-05-05 12:21:42
● 2026-05-13 00:46:22
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | j.gtld-servers.net, h.gtld-servers.net, m.gtld-servers.net, l.gtld-servers.net... | - |
| century21cb.com | ns-497.awsdns-62.com, ns-966.awsdns-56.net, ns-1549.awsdns-01.co.uk, ns-1149.awsdns-15.org | 2 records |
✅ Authoritative Response
Server:205.251.195.198
NS records: ns-497.awsdns-62.com, ns-966.awsdns-56.net, ns-1549.awsdns-01.co.uk, ns-1149.awsdns-15.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for century21cb.com (unsigned zone)
⏱️ Timing
Total: 1107ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 166.117.1.52, 76.223.5.249 |
| NS | 4 | ns-1149.awsdns-15.org, ns-1549.awsdns-01.co.uk... |
| SOA | 1 | ns-1549.awsdns-01.co.uk awsdns-hostmaste |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns-497.awsdns-62.com, ns-497.awsdns-62.com)
Analysis
IP Addresses
The entity century21cb.com points to two IP numbers: 76.223.5.249 and 166.117.1.52.
For instance, other host names sothebysrealt.com, sothebysrealtyjapan.net, cbcnrtindiana.com, century21careers.com and eradistinctiveproperties.net share IP numbers with century21cb.com.
Name Servers
century21cb.com is delegated to four name servers: ns-497.awsdns-62.com, ns-966.awsdns-56.net, ns-1149.awsdns-15.org and ns-1549.awsdns-01.co.uk.
century21cb.com shares name servers with other domains at least partially, for example refinery29.com, d1fmaob5xfh01x.cloudfront.net, goanimate.com, caendra.com and forgasser.com.
Host names with two IP numbers:
ns-497.awsdns-62.com points to: 2600:9000:5301:f100::1 and 205.251.193.241
ns-966.awsdns-56.net points to: 2600:9000:5303:c600::1 and 205.251.195.198
ns-1149.awsdns-15.org points to: 2600:9000:5304:7d00::1 and 205.251.196.125
ns-1549.awsdns-01.co.uk points to: 2600:9000:5306:d00::1 and 205.251.198.13