tls.guru - robtex.com
tls.guru
| DNSSEC | ⚠️ Not signed | ||||||
| A | 3.140.187.7🇺🇸 Amazon3.136.0.0/13 EC2 CMH prefix | ||||||
| PTR | ec2-3-140-187-7.us-east-2.compute.amazonaws.com | ||||||
| NS | udns1.ultradns.net ⭐ | ||||||
| A | 2001:502:f3ff::d🇺🇸 MAINT-ID-120082001:502:f3ff::/48 Neustar | ||||||
| PTR | udns1.ultradns.net | ||||||
| A | 204.69.234.1🇺🇸 MAINT-ID-12008204.69.234.0/24 Neustar | ||||||
| PTR | udns1.ultradns.net | ||||||
| NS | ns4.ultradns2.com | ||||||
| A | 2610:a1:3104::53🇺🇸 AS3991692610:a1:3104::/48 | ||||||
| PTR | ns2.ultradns2.com | ||||||
| A | 204.74.104.4🇺🇸 AS399169204.74.104.0/24 UltraDNS | ||||||
| PTR | ns4.ultradns2.com | ||||||
| NS | ns4.ultradns2.org | ||||||
| A | 2610:a1:3204::53🇺🇸 AS3991692610:a1:3204::/48 | ||||||
| PTR | ns4.ultradns2.org | ||||||
| A | 204.74.106.4🇺🇸 AS399169204.74.106.0/24 UltraDNS | ||||||
| PTR | ns4.ultradns2.org | ||||||
| NS | udns2.ultradns.net | ||||||
| A | 2610:a1:1014::d🇺🇸 MAINT-ID-120082610:a1:1014::/48 Neustar | ||||||
| PTR | udns2.ultradns.net | ||||||
| A | 204.74.101.1🇺🇸 MAINT-ID-12008204.74.101.0/24 Neustar | ||||||
| PTR | udns2.ultradns.net | ||||||
| SOA | udns1.ultradns.netmichael\@rudloff.digicert.com 2026-02-25 #83 | ||||||
guru
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | v0n0.nic.guru ⭐ | ||||||
| NS | v0n1.nic.guru | ||||||
| NS | v0n2.nic.guru | ||||||
| NS | v0n3.nic.guru | ||||||
| NS | v2n0.nic.guru | ||||||
| NS | v2n1.nic.guru | ||||||
| SOA | v0n0.nic.guruhostmaster@donuts.email serial=1783843351 | ||||||
Same first word
Similar names
DNS History
9 records (5 active, 4 former)
○NSns1.mars-solutions.biz2016-12-11 → 2016-12-11 · 3 obs
○ 2026-07-02 13:03:10
○ 2026-07-12 08:20:48
○NSns2.mars-solutions.biz2016-12-11 → 2016-12-11 · 3 obs
○ 2026-07-02 13:03:10
○ 2026-07-12 08:20:48
●NSns4.ultradns2.com2026-07-02 → 2026-07-12 · 3 obs
● 2026-07-02 13:03:10
● 2026-07-12 08:20:48
●NSns4.ultradns2.org2026-07-02 → 2026-07-12 · 3 obs
● 2026-07-02 13:03:10
● 2026-07-12 08:20:48
●NSudns1.ultradns.net2026-07-02 → 2026-07-12 · 3 obs
● 2026-07-02 13:03:10
● 2026-07-12 08:20:48
●NSudns2.ultradns.net2026-07-02 → 2026-07-12 · 3 obs
● 2026-07-02 13:03:10
● 2026-07-12 08:20:48
○MXmail.tls.guru2016-12-11 → 2016-12-11 · 3 obs
○ 2026-07-02 13:03:10
○ 2026-07-12 08:20:48
●A3.140.187.72026-07-02 → 2026-07-12 · 3 obs
● 2026-07-02 13:03:10
● 2026-07-12 08:20:48
○A94.247.40.1562016-12-11 → 2016-12-11 · 3 obs
○ 2026-07-02 13:03:10
○ 2026-07-12 08:20:48
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| guru | v2n1.nic.guru, v0n3.nic.guru, v0n1.nic.guru, v0n0.nic.guru... | 12 records |
| tls.guru | ns4.ultradns2.com, udns2.ultradns.net, udns1.ultradns.net, ns4.ultradns2.org | - |
✅ Authoritative Response
Server:204.74.101.1
NS records: ns4.ultradns2.com, udns2.ultradns.net, udns1.ultradns.net, ns4.ultradns2.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for tls.guru (unsigned zone)
⏱️ Timing
Total: 596ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 3.140.187.7 |
| NS | 4 | ns4.ultradns2.com, ns4.ultradns2.org... |
| SOA | 1 | udns1.ultradns.net michael\.rudloff.digi |
📌 Glue Records Collected
Total: 12
In-bailiwick: 12 (v2n1.nic.guru, v2n1.nic.guru, v0n3.nic.guru...)
Analysis
IP Addresses
tls.guru has exactly one IP address — 3.140.187.7.
Name Servers
Four name servers handle the delegation for tls.guru: ns4.ultradns2.com, udns1.ultradns.net, udns2.ultradns.net and ns4.ultradns2.org.
tls.guru shares at least some of its name servers with other domains, including bankfivenine.com, 120dbfilms.com, dv-fs.com and two others.
These name servers are frequently seen alongside pdns5.ultradns.info, pdns1.ultradns.net, pdns2.ultradns.net and 5 other name servers.
The host names ns4.ultradns2.com, udns1.ultradns.net, udns2.ultradns.net and ns4.ultradns2.org each resolve to two IP addresses: ns4.ultradns2.com resolves to 204.74.104.4 and 2610:a1:3104::53; udns1.ultradns.net resolves to 204.69.234.1 and 2001:502:f3ff::d; udns2.ultradns.net resolves to 204.74.101.1 and 2610:a1:1014::d; ns4.ultradns2.org resolves to 204.74.106.4 and 2610:a1:3204::53.