fiberfirstdns.com - robtex.com
fiberfirstdns.com
| DNSSEC | ⚠️ Not signed | ||||||
| NS | auth1.dns.cogentco.com ⭐ | ||||||
| A | 2001:550:1:a::d🇺🇸 COGENT2001:550::/32 Cogent Communications | ||||||
| PTR | auth1.dns.cogentco.com | ||||||
| A | 66.28.0.14🇺🇸 COGENT66.28.0.0/16 Cogent | ||||||
| PTR | auth1.dns.cogentco.com | ||||||
| NS | auth2.dns.cogentco.com | ||||||
| A | 2001:550:1:b::d🇺🇸 COGENT2001:550::/32 Cogent Communications | ||||||
| PTR | auth2.dns.cogentco.com | ||||||
| A | 66.28.0.30🇺🇸 COGENT66.28.0.0/16 Cogent | ||||||
| PTR | auth2.dns.cogentco.com | ||||||
| SOA | auth1.dns.cogentco.comdns@cogentco.com 2025-08-25 #0 | ||||||
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=1775870897 | ||||||
Subdomains
Same first word
fiberfirstdns.com |
DNS History
2 records (2 active, 0 former)
●NSauth1.dns.cogentco.com2026-02-19 → 2026-04-11 · 2 obs
● 2026-04-11 01:42:20
●NSauth2.dns.cogentco.com2026-02-19 → 2026-04-11 · 2 obs
● 2026-04-11 01:42:20
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | e.gtld-servers.net, g.gtld-servers.net, l.gtld-servers.net, b.gtld-servers.net... | - |
| fiberfirstdns.com | auth1.dns.cogentco.com, auth2.dns.cogentco.com | 3 records |
✅ Authoritative Response
Server:66.28.0.14
NS records: auth1.dns.cogentco.com, auth2.dns.cogentco.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for fiberfirstdns.com (unsigned zone)
⏱️ Timing
Total: 423ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 2 | auth2.dns.cogentco.com, auth1.dns.cogentco.com |
| SOA | 1 | auth1.dns.cogentco.com dns.cogentco.com |
📌 Glue Records Collected
Total: 3
Out-of-bailiwick: 3 (auth1.dns.cogentco.com, auth1.dns.cogentco.com, auth2.dns.cogentco.com)
Analysis
Hierarchy
fiberfirstdns.com is a parent of ne.fiberfirstdns.com, tx.fiberfirstdns.com, ca.fiberfirstdns.com and az.fiberfirstdns.com.
Name Servers
fiberfirstdns.com is delegated to two name servers auth1.dns.cogentco.com and auth2.dns.cogentco.com.
fiberfirstdns.com shares the same name server setup as other domains, for instance 40.11.208.in-addr.arpa, 60.111.38.in-addr.arpa, 175.212.204.in-addr.arpa, cls-mail.com and 22.96.38.in-addr.arpa.
fiberfirstdns.com at least partially shares name servers with other domains, for instance ups-russia.com, dlf.de, 120.243.205.in-addr.arpa, 46.162.65.in-addr.arpa and ups.com.pl.
These name servers are commonly used with the following name servers: nsa.ups.com, nsb.ups.com, cbru.br.ns.els-gms.att.net, cmtu.mt.ns.els-gms.att.net, shadowcat-i.ups.com, pulsar2.hbci.com, pulsar3.hbci.com, pulsar.hbci.com, dns.luminet.net and ns1.hbci.com.
Host names with two IP numbers:
The host name auth1.dns.cogentco.com points to 2001:550:1:a::d and 66.28.0.14; the host name auth2.dns.cogentco.com points to 2001:550:1:b::d and 66.28.0.30.