21st4you.com - robtex.com
21st4you.com
| DNSSEC | ⚠️ Not signed | ||||||
| NS | dbru.br.ns.els-gms.att.net ⚠️ Not in zone NS records | ||||||
| A | 2001:1890:1ff:9f0:68:94:156:134🇺🇸 AS70182001:1890::/29 AT&T Enterprises, LLC | ||||||
| PTR | dbru.br.ns.els-gms.att.net | ||||||
| A | 68.94.156.134🇺🇸 AS701868.88.0.0/13 ARIN Allocation SBC Internet Services | ||||||
| PTR | dbru.br.ns.els-gms.att.net | ||||||
| NS | dmtu.mt.ns.els-gms.att.net ⚠️ Not in zone NS records | ||||||
| A | 2001:1890:1ff:9f1:99:99:99:134🇺🇸 AS70182001:1890::/29 AT&T Enterprises, LLC | ||||||
| PTR | dmtu.mt.ns.els-gms.att.net | ||||||
| A | 99.99.99.134🇺🇸 AS701899.96.0.0/13 AT&T Enterprises, LLC | ||||||
| PTR | dmtu.mt.ns.els-gms.att.net | ||||||
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=1784447172 | ||||||
Same first word
DNS History
5 records (2 active, 3 former)
●NSdbru.br.ns.els-gms.att.net2015-06-23 → 2026-07-19 · 2 obs
● 2026-07-19 08:14:10
●NSdmtu.mt.ns.els-gms.att.net2015-06-23 → 2026-07-19 · 2 obs
● 2026-07-19 08:14:10
○NSns1.21st.com2015-06-23 → 2019-04-22 · 4 obs
● 2019-04-22 08:15:22
○ 2026-06-30 09:08:58
○ 2026-07-19 08:14:10
○MXsmtp3.farmersinsurance.com2015-06-23 → 2019-04-22 · 4 obs
● 2019-04-22 08:15:22
○ 2026-06-30 09:08:58
○ 2026-07-19 08:14:10
○A12.177.226.712015-06-23 → 2019-04-22 · 4 obs
● 2019-04-22 08:15:22
○ 2026-06-30 09:08:58
○ 2026-07-19 08:14:10
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net... | - |
| 21st4you.com | dbru.br.ns.els-gms.att.net, dmtu.mt.ns.els-gms.att.net | - |
✅ Authoritative Response
Server:68.94.156.134
NS records: dbru.br.ns.els-gms.att.net, dmtu.mt.ns.els-gms.att.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 21st4you.com (unsigned zone)
⏱️ Timing
Total: 357ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|
Analysis
Name Servers
DNS delegation for 21st4you.com points to two name servers: dbru.br.ns.els-gms.att.net and dmtu.mt.ns.els-gms.att.net.
21st4you.com has the same name server delegation as a number of other domains, such as bestbuyfraud.org, nylicutraining.com, bcbsnetwork.com and two more.
21st4you.com partially shares its NS delegation with several other domains, including cruiseopts.com, goldmansachsbalancetransfer.com, tucsondart.org and two others.
In DNS configurations, these name servers often share authority with cbru.br.ns.els-gms.att.net, cmtu.mt.ns.els-gms.att.net, dns3.carnival.com and 7 other name servers.
dbru.br.ns.els-gms.att.net directs to 68.94.156.134 and 2001:1890:1ff:9f0:68:94:156:134. dmtu.mt.ns.els-gms.att.net directs to 99.99.99.134 and 2001:1890:1ff:9f1:99:99:99:134. Each host name carries two IP addresses.