tf-an.co - robtex.com
tf-an.co
| DNSSEC | ⚠️ Not signed | ||||||
| NS | sdns26.ultradns.com ⭐ | ||||||
| A | 2610:a1:1001::1a🇺🇸 MAINT-ID-120082610:a1:1001::/48 Neustar | ||||||
| PTR | sdns26.ultradns.com | ||||||
| A | 156.154.140.26🇺🇸 MAINT-ID-12008156.154.140.0/24 Neustar | ||||||
| PTR | sdns26.ultradns.com | ||||||
| NS | sdns26.ultradns.biz | ||||||
| A | 2610:a1:1003::1a🇺🇸 MAINT-ID-120082610:a1:1003::/48 Neustar | ||||||
| PTR | sdns26.ultradns.biz | ||||||
| A | 156.154.142.26🇺🇸 MAINT-ID-12008156.154.142.0/24 Neustar | ||||||
| PTR | sdns26.ultradns.biz | ||||||
| NS | sdns26.ultradns.net | ||||||
| A | 2610:a1:1002::1a🇺🇸 MAINT-ID-120082610:a1:1002::/48 Neustar | ||||||
| PTR | sdns26.ultradns.net | ||||||
| A | 156.154.141.26🇺🇸 MAINT-ID-12008156.154.141.0/24 Neustar | ||||||
| PTR | sdns26.ultradns.net | ||||||
| NS | sdns26.ultradns.org | ||||||
| A | 2610:a1:1004::1a🇺🇸 MAINT-ID-120082610:a1:1004::/48 Neustar | ||||||
| PTR | sdns26.ultradns.org | ||||||
| A | 156.154.143.26🇺🇸 MAINT-ID-12008156.154.143.0/24 Neustar | ||||||
| PTR | sdns26.ultradns.org | ||||||
| SOA | sdns26.ultradns.comtblackwell@tracfone.com 2014-09-17 #78 | ||||||
co
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | ns0.centralnic.net ⭐ | ||||||
| NS | a.registrydns.co | ||||||
| NS | b.registrydns.co | ||||||
| NS | c.registrydns.co | ||||||
| NS | d.registrydns.co | ||||||
| SOA | ns0.centralnic.nethostmaster@centralnic.net serial=1759711000 | ||||||
Same first word
tf-an.co |
Similar names
DNS History
4 records (4 active, 0 former)
●NSsdns26.ultradns.biz2026-05-13 → 2026-07-20 · 2 obs
● 2026-07-20 18:09:20
●NSsdns26.ultradns.com2026-05-13 → 2026-07-20 · 2 obs
● 2026-07-20 18:09:20
●NSsdns26.ultradns.net2026-05-13 → 2026-07-20 · 2 obs
● 2026-07-20 18:09:20
●NSsdns26.ultradns.org2026-05-13 → 2026-07-20 · 2 obs
● 2026-07-20 18:09:20
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| co | d.registrydns.co, c.registrydns.co, a.registrydns.co, b.registrydns.co | - |
| tf-an.co | sdns26.ultradns.biz, sdns26.ultradns.com, sdns26.ultradns.net, sdns26.ultradns.org | - |
✅ Authoritative Response
Server:156.154.143.26
NS records: sdns26.ultradns.biz, sdns26.ultradns.com, sdns26.ultradns.net, sdns26.ultradns.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for tf-an.co (unsigned zone)
⏱️ Timing
Total: 401ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 4 | sdns26.ultradns.biz, sdns26.ultradns.com... |
| SOA | 1 | sdns26.ultradns.com tblackwell.tracfone. |
Analysis
Name Servers
The domain tf-an.co is delegated to these four name servers: sdns26.ultradns.biz, sdns26.ultradns.com, sdns26.ultradns.net and sdns26.ultradns.org.
tf-an.co partially shares its NS delegation with several other domains, including tracfonewirelessinc.com, strild.com, ppbyot.com and two others.
sdns26.ultradns.biz, sdns26.ultradns.com, sdns26.ultradns.net and sdns26.ultradns.org each carry two IP addresses. sdns26.ultradns.biz has 156.154.142.26 and 2610:a1:1003::1a; sdns26.ultradns.com has 156.154.140.26 and 2610:a1:1001::1a; sdns26.ultradns.net has 156.154.141.26 and 2610:a1:1002::1a; sdns26.ultradns.org has 156.154.143.26 and 2610:a1:1004::1a.