ddclassroom.com - robtex.com
ddclassroom.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=1771291435 | ||||||
Same first word
ddclassroom.net |
ddclassroom.com |
DNS History
17 records (6 active, 11 former)
●NSns-1008.awsdns-62.net2015-05-30 → 2026-03-22 · 2 obs
● 2026-03-22 22:11:12
●NSns-1264.awsdns-30.org2015-05-30 → 2026-03-22 · 2 obs
● 2026-03-22 22:11:12
●NSns-1578.awsdns-05.co.uk2015-05-30 → 2026-03-22 · 2 obs
● 2026-03-22 22:11:12
●NSns-373.awsdns-46.com2015-05-30 → 2026-03-22 · 2 obs
● 2026-03-22 22:11:12
○MXalt1.aspmx.l.google.com2015-05-30 → 2016-12-05 · 4 obs
● 2016-12-05 13:42:12
○ 2026-03-22 22:11:10
○ 2026-03-22 22:11:12
○MXalt2.aspmx.l.google.com2015-05-30 → 2016-12-05 · 4 obs
● 2016-12-05 13:42:12
○ 2026-03-22 22:11:10
○ 2026-03-22 22:11:12
○MXaspmx.l.google.com2015-05-30 → 2016-12-05 · 4 obs
● 2016-12-05 13:42:12
○ 2026-03-22 22:11:10
○ 2026-03-22 22:11:12
○MXaspmx2.googlemail.com2015-05-30 → 2016-12-05 · 4 obs
● 2016-12-05 13:42:12
○ 2026-03-22 22:11:10
○ 2026-03-22 22:11:12
○MXaspmx3.googlemail.com2015-05-30 → 2016-12-05 · 4 obs
● 2016-12-05 13:42:12
○ 2026-03-22 22:11:10
○ 2026-03-22 22:11:12
●MXus-smtp-inbound-1.mimecast.com2026-03-22 → 2026-03-22 · 3 obs
● 2026-03-22 22:11:10
● 2026-03-22 22:11:12
●MXus-smtp-inbound-2.mimecast.com2026-03-22 → 2026-03-22 · 3 obs
● 2026-03-22 22:11:10
● 2026-03-22 22:11:12
○A52.0.228.1742016-01-26 → 2016-01-26 · 4 obs
● 2016-01-26 04:45:24
○ 2016-04-28 03:06:06
○ 2026-03-22 22:11:12
○A52.0.250.2102016-01-26 → 2016-01-26 · 4 obs
● 2016-01-26 04:45:24
○ 2016-04-28 03:06:06
○ 2026-03-22 22:11:12
○A52.4.205.1152016-04-28 → 2016-12-05 · 5 obs
● 2016-04-28 03:06:06
● 2016-12-05 13:42:12
○ 2026-03-22 22:11:10
○ 2026-03-22 22:11:12
○A52.87.147.1722016-04-28 → 2016-12-05 · 5 obs
● 2016-04-28 03:06:06
● 2016-12-05 13:42:12
○ 2026-03-22 22:11:10
○ 2026-03-22 22:11:12
○A54.164.205.382015-05-30 → 2015-11-14 · 4 obs
● 2015-11-14 01:23:46
○ 2016-01-26 04:45:24
○ 2026-03-22 22:11:12
○A54.85.212.922015-05-30 → 2015-11-14 · 4 obs
● 2015-11-14 01:23:46
○ 2016-01-26 04:45:24
○ 2026-03-22 22:11:12
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| ddclassroom.com | ns-373.awsdns-46.com, ns-1008.awsdns-62.net, ns-1578.awsdns-05.co.uk, ns-1264.awsdns-30.org | 1 record |
✅ Authoritative Response
Server: 205.251.193.117
NS records: ns-373.awsdns-46.com, ns-1008.awsdns-62.net, ns-1578.awsdns-05.co.uk, ns-1264.awsdns-30.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ddclassroom.com (unsigned zone)
⏱️ Timing
Total: 775ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 4 | ns-1008.awsdns-62.net, ns-1264.awsdns-30.org... |
| MX | 2 | us-smtp-inbound-1.mimecast.com (pri: 0), us-smtp-inbound-2.mimecast.com (pri: 0) |
| TXT | 3 | google-site-verification=G7betC3UpZf8vNw, google-site-verification=QjrmoFydKS_e2HE... |
| SOA | 1 | ns-373.awsdns-46.com awsdns-hostmaster.a |
📌 Glue Records Collected
Total: 1
Out-of-bailiwick: 1 (ns-373.awsdns-46.com)
Analysis
Name Servers
ddclassroom.com delegates to four name servers: ns-373.awsdns-46.com, ns-1008.awsdns-62.net, ns-1264.awsdns-30.org and ns-1578.awsdns-05.co.uk.
ddclassroom.com at least partially shares name servers with other domains, including shrm-certified.net, ponican.com, agt.systems, d3j76w2m17gc6b.cloudfront.net and llloyalty.com.br.
Host names with two IP numbers: ns-373.awsdns-46.com points to 2600:9000:5301:7500::1 and 205.251.193.117; ns-1008.awsdns-62.net points to 2600:9000:5303:f000::1 and 205.251.195.240; ns-1264.awsdns-30.org points to 2600:9000:5304:f000::1 and 205.251.196.240; ns-1578.awsdns-05.co.uk points to 2600:9000:5306:2a00::1 and 205.251.198.42.
Mail Servers
ddclassroom.com is served by two mail servers us-smtp-inbound-1.mimecast.com and us-smtp-inbound-2.mimecast.com.
ddclassroom.com shares the same mail server setup as other domains, for instance tex-trude.com, ermetic.com, gaartistsbygettyimages.com, environmentaldesigns.com and energy.gov.tt.
ddclassroom.com shares at least some mail servers with other domains, for instance capitalregioncollaborative.com, tootntotum.com and extractproduction.com.
Host names with six IP numbers:
us-smtp-inbound-1.mimecast.com points to: 170.10.128.141, 170.10.128.221, 170.10.128.242, 170.10.132.141, 170.10.132.221 and 170.10.132.242.
us-smtp-inbound-2.mimecast.com points to: 170.10.128.141, 170.10.128.221, 170.10.128.242, 170.10.132.141, 170.10.132.221 and 170.10.132.242.
Host names that point to each IP:
170.10.128.141 is pointed to by: us-smtp-inbound-1.mimecast.com and us-smtp-inbound-2.mimecast.com.
170.10.128.221 is pointed to by: us-smtp-inbound-1.mimecast.com and us-smtp-inbound-2.mimecast.com.
170.10.128.242 is pointed to by: us-smtp-inbound-1.mimecast.com and us-smtp-inbound-2.mimecast.com.
170.10.132.141 is pointed to by: us-smtp-inbound-1.mimecast.com and us-smtp-inbound-2.mimecast.com.
170.10.132.221 is pointed to by: us-smtp-inbound-1.mimecast.com and us-smtp-inbound-2.mimecast.com.
170.10.132.242 is pointed to by: us-smtp-inbound-1.mimecast.com and us-smtp-inbound-2.mimecast.com.