practicebynumbers.com - dns.ninja
practicebynumbers.com
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=1781918305 | ||||||
Subdomains
Same first word
practicebynumbers.com |
DNS History
12 records (10 active, 2 former)
●NSns-1495.awsdns-58.org2016-12-15 → 2026-06-20 · 2 obs
● 2026-06-20 01:25:42
●NSns-1720.awsdns-23.co.uk2016-12-15 → 2026-06-20 · 2 obs
● 2026-06-20 01:25:42
●NSns-72.awsdns-09.com2016-12-15 → 2026-06-20 · 2 obs
● 2026-06-20 01:25:42
●NSns-740.awsdns-28.net2016-12-15 → 2026-06-20 · 2 obs
● 2026-06-20 01:25:42
●MXalt1.aspmx.l.google.com2016-12-15 → 2026-06-20 · 2 obs
● 2026-06-20 01:25:42
●MXalt2.aspmx.l.google.com2016-12-15 → 2026-06-20 · 2 obs
● 2026-06-20 01:25:42
●MXalt3.aspmx.l.google.com2016-12-15 → 2026-06-20 · 2 obs
● 2026-06-20 01:25:42
●MXalt4.aspmx.l.google.com2016-12-15 → 2026-06-20 · 2 obs
● 2026-06-20 01:25:42
●MXaspmx.l.google.com2016-12-15 → 2026-06-20 · 2 obs
● 2026-06-20 01:25:42
○A54.183.91.1592016-12-15 → 2016-12-15 · 3 obs
○ 2017-10-03 10:58:32
○ 2026-06-20 01:25:42
●A54.215.84.1672026-02-17 → 2026-06-20 · 3 obs
● 2026-02-17 12:40:50
● 2026-06-20 01:25:42
○A54.241.156.2382017-10-03 → 2017-10-03 · 4 obs
● 2017-10-03 10:58:32
○ 2026-02-17 12:40:50
○ 2026-06-20 01:25:42
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| practicebynumbers.com | ns-72.awsdns-09.com, ns-740.awsdns-28.net, ns-1720.awsdns-23.co.uk, ns-1495.awsdns-58.org | 2 records |
✅ Authoritative Response
Server:205.251.194.228
NS records: ns-72.awsdns-09.com, ns-740.awsdns-28.net, ns-1720.awsdns-23.co.uk, ns-1495.awsdns-58.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for practicebynumbers.com (unsigned zone)
⏱️ Timing
Total: 402ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 54.215.84.167 |
| NS | 4 | ns-1495.awsdns-58.org, ns-1720.awsdns-23.co.uk... |
| MX | 5 | aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)... |
| SOA | 1 | ns-1720.awsdns-23.co.uk awsdns-hostmaste |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns-72.awsdns-09.com, ns-72.awsdns-09.com)
Analysis
Hierarchy
The parent domain of app.practicebynumbers.com and www.practicebynumbers.com is practicebynumbers.com.
IP Addresses
practicebynumbers.com directs to one IP number, which is 54.215.84.167.
www.practicebynumbers.com, app.practicebynumbers.com and ec2-54-215-84-167.us-west-1.compute.amazonaws.com are examples of other host names that share IP numbers with practicebynumbers.com.
Name Servers
The domain practicebynumbers.com is delegated to these four name servers: ns-72.awsdns-09.com, ns-740.awsdns-28.net, ns-1495.awsdns-58.org and ns-1720.awsdns-23.co.uk.
practicebynumbers.com has at least partial name server overlap with other domains, such as sugitakinsyo.com, fikirbazzenger.com, d4ph4flxavcz4.cloudfront.net and two others.
ns-72.awsdns-09.com, ns-740.awsdns-28.net, ns-1495.awsdns-58.org and ns-1720.awsdns-23.co.uk all point to exactly two IP numbers each: ns-72.awsdns-09.com → 205.251.192.72 and 2600:9000:5300:4800::1; ns-740.awsdns-28.net → 205.251.194.228 and 2600:9000:5302:e400::1; ns-1495.awsdns-58.org → 205.251.197.215 and 2600:9000:5305:d700::1; ns-1720.awsdns-23.co.uk → 205.251.198.184 and 2600:9000:5306:b800::1.
Mail Servers
practicebynumbers.com is handled by five mail servers: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.
practicebynumbers.com shares at least some of its mail servers with other domains — for example ns500698.ns500698.ns500758.ns500759.ns500735.ns500736.ns500735.ns500736.ns500735.ns500698.ns500698.ns500576.ns500576.trackreceptor.com, ns500699.ns500693.ns500699.ns500699.ns500699.ns500699.ns500588.ns500683.ns500683.ns500693.ns500112.dtrkdll.com, ns500698.ns500759.ns500758.ns500759.ns500736.ns500736.ns500698.ns500736.ns500708.ns500708.ns500708.ns500708.ns500576.ns500619.ns500652.ns500619.trackreceptor.com and two more.
It is common to find these mail servers paired with mail servers alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and 3 more.
Hosts with two IP numbers each:
aspmx.l.google.com has two IP addresses: 64.233.180.26 and 2607:f8b0:4004:c1b::1b.
alt1.aspmx.l.google.com has two IP addresses: 108.177.123.27 and 2800:3f0:4003:c0f::1a.
alt2.aspmx.l.google.com has two IP addresses: 172.253.116.27 and 2a00:1450:400b:c02::1a.
alt3.aspmx.l.google.com has two IP addresses: 192.178.223.27 and 2a00:1450:4009:c0f::1b.
alt4.aspmx.l.google.com has two IP addresses: 172.253.157.27 and 2a00:1450:400c:c23::1b.