1s2u.com - robtex.com
1s2u.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 13.228.88.47🇸🇬 Amazon13.228.0.0/15 EC2 SIN prefix | ||||||
| PTR | mail.1s2u.com | ||||||
| NS | ns1.1s2u.com ⭐ ⚠️ Not in parent delegation | ||||||
| A | 13.228.88.47🇸🇬 Amazon13.228.0.0/15 EC2 SIN prefix | ||||||
| PTR | mail.1s2u.com | ||||||
| NS | ns1.clicksendsms.com ⚠️ Not in zone NS records | ||||||
| A | 13.228.88.47🇸🇬 Amazon13.228.0.0/15 EC2 SIN prefix | ||||||
| PTR | mail.1s2u.com | ||||||
| NS | ns2.1s2u.com ⚠️ Not in parent delegation | ||||||
| A | 13.228.88.47🇸🇬 Amazon13.228.0.0/15 EC2 SIN prefix | ||||||
| PTR | mail.1s2u.com | ||||||
| NS | ns2.clicksendsms.com ⚠️ Not in zone NS records | ||||||
| A | 13.228.88.47🇸🇬 Amazon13.228.0.0/15 EC2 SIN prefix | ||||||
| PTR | mail.1s2u.com | ||||||
| MX | mail.1s2u.com ⭐ | ||||||
| A | 13.228.88.47🇸🇬 Amazon13.228.0.0/15 EC2 SIN prefix | ||||||
| PTR | mail.1s2u.com | ||||||
| TXT | v=spf1 +a +mx +a:1s2u.com +ip4:95.217.111.114 +ip4:135.181.219.156 include:_s... | ||||||
| SOA | ns1.1s2u.comhostmaster@1s2u.com 2026-02-27 #1 | ||||||
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=1771291435 | ||||||
Subdomains
Same first word
Similar names
DNS History
11 records (6 active, 5 former)
○NSns.1s2u.com2015-08-04 → 2018-09-17 · 4 obs
● 2018-09-17 23:17:08
○ 2026-02-19 13:49:26
○ 2026-03-18 13:47:14
●NSns1.1s2u.com2026-02-19 → 2026-03-18 · 3 obs
● 2026-02-19 13:49:26
● 2026-03-18 13:47:14
●NSns1.clicksendsms.com2026-02-19 → 2026-03-18 · 3 obs
● 2026-02-19 13:49:26
● 2026-03-18 13:47:14
○NSns102.superdnssite.com2015-08-04 → 2016-06-17 · 4 obs
● 2016-06-17 05:38:46
○ 2016-08-31 13:22:28
○ 2026-03-18 13:47:14
○NSns103.superdnssite.com2015-08-04 → 2016-06-17 · 4 obs
● 2016-06-17 05:38:46
○ 2016-08-31 13:22:28
○ 2026-03-18 13:47:14
●NSns2.1s2u.com2026-02-19 → 2026-03-18 · 3 obs
● 2026-02-19 13:49:26
● 2026-03-18 13:47:14
●NSns2.clicksendsms.com2026-02-19 → 2026-03-18 · 3 obs
● 2026-02-19 13:49:26
● 2026-03-18 13:47:14
●MXmail.1s2u.com2015-08-04 → 2026-03-18 · 2 obs
● 2026-03-18 13:47:14
●A13.228.88.472026-02-19 → 2026-03-18 · 3 obs
● 2026-02-19 13:49:26
● 2026-03-18 13:47:14
○A67.23.236.1822016-08-31 → 2018-09-17 · 5 obs
● 2016-08-31 13:22:28
● 2018-09-17 23:17:08
○ 2026-02-19 13:49:26
○ 2026-03-18 13:47:14
○A72.29.82.762015-08-04 → 2016-06-17 · 4 obs
● 2016-06-17 05:38:46
○ 2016-08-31 13:22:28
○ 2026-03-18 13:47:14
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | k.gtld-servers.net, d.gtld-servers.net, m.gtld-servers.net, b.gtld-servers.net... | - |
| 1s2u.com | ns1.clicksendsms.com, ns2.clicksendsms.com | 2 records |
✅ Authoritative Response
Server: 13.228.88.47
NS records: ns1.clicksendsms.com, ns2.clicksendsms.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 1s2u.com (unsigned zone)
⏱️ Timing
Total: 995ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 13.228.88.47 |
| NS | 2 | ns2.1s2u.com, ns1.1s2u.com |
| MX | 1 | mail.1s2u.com (pri: 10) |
| TXT | 1 | v=spf1 +a +mx +a:1s2u.com +ip4:95.217.11 |
| SOA | 1 | ns1.1s2u.com hostmaster.1s2u.com |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns1.clicksendsms.com, ns2.clicksendsms.com)
Analysis
Hierarchy
1s2u.com is a parent of ns1.1s2u.com, ns2.1s2u.com, www.1s2u.com and mail.1s2u.com.
IP Addresses
1s2u.com points to a single IP address: 13.228.88.47.
Other host names such as ec2-13-228-88-47.ap-southeast-1.compute.amazonaws.com, ns1.1s2u.com, ns2.1s2u.com, ns2.clicksendsms.com and mail.clicksendsms.com share IPs with 1s2u.com.
Name Servers
1s2u.com is delegated to four name servers: ns1.1s2u.com, ns2.1s2u.com, ns1.clicksendsms.com and ns2.clicksendsms.com.
1s2u.com shares name servers with other domains to some extent, including 1s2u.net, nexotech.my, smscin.com and clicksendsms.com.
these name servers are commonly used with ns1.1s2u.net, ns2.1s2u.net, ns1.nexotech.my, ns2.nexotech.my, ns1.smscin.com and ns2.smscin.com.
Host names with one IP number:
The host names ns1.1s2u.com, ns2.1s2u.com, ns1.clicksendsms.com and ns2.clicksendsms.com point to: 13.228.88.47.
Mail Servers
The mail.1s2u.com mail server handles 1s2u.com.
mail.1s2u.com points to a single IP number: 13.228.88.47.