systemdesignnotes.com - robtex.com
systemdesignnotes.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=1788913383 | ||||||
Same first word
systemdesignnotes.pages.dev |
systemdesignnotes.com |
Previous names
Next names
DNS History
17 records (17 active, 0 former)
●NSns-cloud-b1.googledomains.com2026-09-05 → 2026-09-09 · 2 obs
● 2026-09-09 00:27:40
●NSns-cloud-b2.googledomains.com2026-09-05 → 2026-09-09 · 2 obs
● 2026-09-09 00:27:40
●NSns-cloud-b3.googledomains.com2026-09-05 → 2026-09-09 · 2 obs
● 2026-09-09 00:27:40
●NSns-cloud-b4.googledomains.com2026-09-05 → 2026-09-09 · 2 obs
● 2026-09-09 00:27:40
●MXalt1.aspmx.l.google.com2026-09-05 → 2026-09-09 · 2 obs
● 2026-09-09 00:27:40
●MXalt2.aspmx.l.google.com2026-09-05 → 2026-09-09 · 2 obs
● 2026-09-09 00:27:40
●MXalt3.aspmx.l.google.com2026-09-05 → 2026-09-09 · 2 obs
● 2026-09-09 00:27:40
●MXalt4.aspmx.l.google.com2026-09-05 → 2026-09-09 · 2 obs
● 2026-09-09 00:27:40
●MXaspmx.l.google.com2026-09-05 → 2026-09-09 · 2 obs
● 2026-09-09 00:27:40
●A2001:4860:4802:32::152026-09-05 → 2026-09-09 · 2 obs
● 2026-09-09 00:27:40
●A2001:4860:4802:34::152026-09-05 → 2026-09-09 · 2 obs
● 2026-09-09 00:27:40
●A2001:4860:4802:36::152026-09-05 → 2026-09-09 · 2 obs
● 2026-09-09 00:27:40
●A2001:4860:4802:38::152026-09-05 → 2026-09-09 · 2 obs
● 2026-09-09 00:27:40
●A216.239.32.212026-09-05 → 2026-09-09 · 2 obs
● 2026-09-09 00:27:40
●A216.239.34.212026-09-05 → 2026-09-09 · 2 obs
● 2026-09-09 00:27:40
●A216.239.36.212026-09-05 → 2026-09-09 · 2 obs
● 2026-09-09 00:27:40
●A216.239.38.212026-09-05 → 2026-09-09 · 2 obs
● 2026-09-09 00:27:40
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | g.gtld-servers.net, d.gtld-servers.net, a.gtld-servers.net, h.gtld-servers.net... | - |
| systemdesignnotes.com | ns-cloud-b1.googledomains.com, ns-cloud-b2.googledomains.com, ns-cloud-b3.googledomains.com, ns-cloud-b4.googledomains.com | 8 records |
✅ Authoritative Response
Server:216.239.38.107
NS records: ns-cloud-b1.googledomains.com, ns-cloud-b2.googledomains.com, ns-cloud-b3.googledomains.com, ns-cloud-b4.googledomains.com
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 615ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 4 | 216.239.36.21, 216.239.32.21... |
| AAAA | 4 | 2001:4860:4802:38::15, 2001:4860:4802:34::15... |
| NS | 4 | ns-cloud-b3.googledomains.com, ns-cloud-b4.googledomains.com... |
| MX | 5 | alt1.aspmx.l.google.com (pri: 5), alt3.aspmx.l.google.com (pri: 10)... |
| TXT | 2 | google-site-verification=WwemWihlnJUNpt2, v=spf1 include:_spf.google.com ~all |
| SOA | 1 | ns-cloud-b1.googledomains.com cloud-dns- |
📌 Glue Records Collected
Total: 8
Out-of-bailiwick: 8 (ns-cloud-b1.googledomains.com, ns-cloud-b1.googledomains.com, ns-cloud-b2.googledomains.com...)
Analysis
IP Addresses
systemdesignnotes.com has 8 IP addresses — 216.239.32.21, 216.239.34.21, 216.239.36.21 and 5 more.
arquitecnicas.com, iboplayerplaylist.shop, sprime.us and two other host names share IP numbers with systemdesignnotes.com.
Name Servers
The authoritative name servers for systemdesignnotes.com are ns-cloud-b1.googledomains.com, ns-cloud-b2.googledomains.com, ns-cloud-b3.googledomains.com and ns-cloud-b4.googledomains.com.
At least some of systemdesignnotes.com's name servers are shared with other domains, for example raunak.com, iccdistritoprovincia.org, myhomeplaceky.com and two more.
Four hostnames, each resolving to a pair of IP addresses: ns-cloud-b1.googledomains.com directs to 216.239.32.107 and 2001:4860:4802:32::6b; ns-cloud-b2.googledomains.com directs to 216.239.34.107 and 2001:4860:4802:34::6b; ns-cloud-b3.googledomains.com directs to 216.239.36.107 and 2001:4860:4802:36::6b; ns-cloud-b4.googledomains.com directs to 216.239.38.107 and 2001:4860:4802:38::6b.
Mail Servers
systemdesignnotes.com has five mail servers, which are aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.
systemdesignnotes.com has at least partial mail server overlap with other domains such as talentevo.me, msvein-forms.com, theevanesceexperience.com and two more.
These mail servers commonly co-occur with mail servers alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and 3 others.
Hostnames that resolve to two IP addresses:
aspmx.l.google.com maps to two IP addresses — 64.233.180.27 and 2607:f8b0:4004:c23::1b.
alt1.aspmx.l.google.com maps to two IP addresses — 192.178.234.26 and 2800:3f0:4003:c14::1a.
alt2.aspmx.l.google.com maps to two IP addresses — 172.253.116.26 and 2a00:1450:400b:c02::1b.
alt3.aspmx.l.google.com maps to two IP addresses — 192.178.223.26 and 2a00:1450:4009:c0f::1a.
alt4.aspmx.l.google.com maps to two IP addresses — 172.253.157.26 and 2a00:1450:400c:c23::1a.