ctbholding.com - robtex.com
ctbholding.com
com
| DNSSEC | π Signed (DS record present) | ||||||
| NS | a.gtld-servers.net β | ||||||
| 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=1774376642 | ||||||
Same first word
ctbholding.com |
Similar names
DNS History
8 records (8 active, 0 former)
βNSns15.worldnic.com2026-02-16 β 2026-03-24 Β· 2 obs
β 2026-03-24 18:31:42
βNSns16.worldnic.com2026-02-16 β 2026-03-24 Β· 2 obs
β 2026-03-24 18:31:42
βMXalt1.aspmx.l.google.com2026-02-16 β 2026-03-24 Β· 2 obs
β 2026-03-24 18:31:42
βMXalt2.aspmx.l.google.com2026-02-16 β 2026-03-24 Β· 2 obs
β 2026-03-24 18:31:42
βMXalt3.aspmx.l.google.com2026-02-16 β 2026-03-24 Β· 2 obs
β 2026-03-24 18:31:42
βMXalt4.aspmx.l.google.com2026-02-16 β 2026-03-24 Β· 2 obs
β 2026-03-24 18:31:42
βMXaspmx.l.google.com2026-02-16 β 2026-03-24 Β· 2 obs
β 2026-03-24 18:31:42
βA208.91.197.272026-02-16 β 2026-03-24 Β· 2 obs
β 2026-03-24 18:31:42
π DNS Trace
π Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | b.gtld-servers.net, d.gtld-servers.net, k.gtld-servers.net, h.gtld-servers.net... | - |
| ctbholding.com | ns15.worldnic.com, ns16.worldnic.com | 2 records |
β Authoritative Response
Server:162.159.26.214
NS records: ns15.worldnic.com, ns16.worldnic.com
π DNSSEC Status
β οΈ Insecure (no DNSSEC)
No DS record for ctbholding.com (unsigned zone)
β±οΈ Timing
Total: 388ms | Queries: -
π Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 208.91.197.27 |
| NS | 2 | ns16.worldnic.com, ns15.worldnic.com |
| TXT | 1 | google-site-verification=oayXg52sNVUCQvV |
| SOA | 1 | NS15.WORLDNIC.com namehost.WORLDNIC.com |
π Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns15.worldnic.com, ns16.worldnic.com)
Analysis
IP Addresses
ctbholding.com maps to IP address 208.91.197.27.
Other host names, for instance sarah.ellisil.cslegal.com, dictionaryofforestry.org, seahawksemail.com, ns1.pyxl.net and tileston.com share IP numbers with ctbholding.com.
Name Servers
Two name servers ns15.worldnic.com and ns16.worldnic.com are delegated to ctbholding.com.
ctbholding.com uses the same name server configuration as other domains, such as alcm.com, bluecorduroys.biz, itii.us, henrycalvin.com and barouhintegra.com.
ctbholding.com shares some name servers with other domains, for example cancer-info.com.
Host names with a single IP address:
ns15.worldnic.com points to 162.159.26.214
ns16.worldnic.com points to 162.159.27.150
Mail Servers
ctbholding.com is handled by five mail servers: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt3.aspmx.l.google.com and alt4.aspmx.l.google.com.
ctbholding.com shares mail servers with other domains at least in part, for instance calibaba.com, childcare-marketing.com, smashart.com, ns500698.ns500698.ns500759.ns500758.ns500698.ns500698.ns500736.ns500735.ns500576.ns500686.ns500576.ns500619.trackreceptor.com and ns500671.ns500731.ns500754.ns500671.ns500731.ns500742.ns500705.ns500705.ns500649.ns500649.ns500666.ns500291.ns500291.ns500131.lustychickser.com.
These mail servers are often used together with aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx4.googlemail.com and aspmx5.googlemail.com.
Two IPs per host name:
aspmx.l.google.com points to: 2a00:1450:4009:c0f::1b and 142.250.110.26
alt1.aspmx.l.google.com points to: 2800:3f0:4003:c0f::1b and 108.177.123.27
alt2.aspmx.l.google.com points to: 2a00:1450:4013:c1e::1b and 192.178.213.27
alt3.aspmx.l.google.com points to: 2a00:1450:4009:c0f::1a and 192.178.223.26
alt4.aspmx.l.google.com points to: 2607:f8b0:4003:c4a::1a and 142.251.96.26
Pattern: left IDs ascend by 9 (12, 21, 30, 39, 48); each pair of targets ascend by 9 (15/18, 24/27, 33/36, 42/45, 51/54)