extra-classes.com - robtex.com
extra-classes.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=1774776092 | ||||||
Same first word
extra-classes.com |
DNS History
8 records (8 active, 0 former)
●NSns67.domaincontrol.com2026-03-06 → 2026-03-29 · 2 obs
● 2026-03-29 09:48:28
●NSns68.domaincontrol.com2026-03-06 → 2026-03-29 · 2 obs
● 2026-03-29 09:48:28
●MXalt1.aspmx.l.google.com2026-03-06 → 2026-03-29 · 2 obs
● 2026-03-29 09:48:28
●MXalt2.aspmx.l.google.com2026-03-06 → 2026-03-29 · 2 obs
● 2026-03-29 09:48:28
●MXalt3.aspmx.l.google.com2026-03-06 → 2026-03-29 · 2 obs
● 2026-03-29 09:48:28
●MXalt4.aspmx.l.google.com2026-03-06 → 2026-03-29 · 2 obs
● 2026-03-29 09:48:28
●MXaspmx.l.google.com2026-03-06 → 2026-03-29 · 2 obs
● 2026-03-29 09:48:28
●A148.66.136.1222026-03-06 → 2026-03-29 · 2 obs
● 2026-03-29 09:48:28
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net... | - |
| extra-classes.com | ns67.domaincontrol.com, ns68.domaincontrol.com | 4 records |
✅ Authoritative Response
Server:173.201.71.44
NS records: ns67.domaincontrol.com, ns68.domaincontrol.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for extra-classes.com (unsigned zone)
⏱️ Timing
Total: 206ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 148.66.136.122 |
| NS | 2 | ns67.domaincontrol.com, ns68.domaincontrol.com |
| MX | 5 | aspmx.l.google.com (pri: 1), alt1.aspmx.l.google.com (pri: 5)... |
| TXT | 2 | google-site-verification=81JD_EV-ZhBRBgp, v=spf1 include:dc-aa8e722993._spfm.extra |
| SOA | 1 | ns67.domaincontrol.com dns.jomax.net |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns67.domaincontrol.com, ns67.domaincontrol.com, ns68.domaincontrol.com...)
Analysis
IP Addresses
extra-classes.com maps to IP address 148.66.136.122.
Other host names, for instance mail.oper.in, mail.sonduonggreenfarm.com, mail.spiroots.com, ftp.sanmargroup.com and mail.ertindia.com share IP numbers with extra-classes.com.
Name Servers
Two name servers ns67.domaincontrol.com and ns68.domaincontrol.com are delegated to extra-classes.com.
extra-classes.com uses the same name server configuration as other domains, such as shawnchavez.com, computercloud.ca, shinnyocenternyc.com, scgsr.com and qing000.com.
Host names with two IPs:
ns67.domaincontrol.com points to 2603:5:2174::2c and 97.74.103.44.
ns68.domaincontrol.com points to 2603:5:2274::2c and 173.201.71.44.
Mail Servers
extra-classes.com is handled by five mail servers: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt3.aspmx.l.google.com and alt4.aspmx.l.google.com.
extra-classes.com shares mail servers with other domains at least in part, for instance cmr-it.com, feid.dk, ns500699.ns500693.ns500693.ns500699.ns500734.ns500693.ns500693.ns500683.ns500699.ns500588.ns500632.ns500612.ns500632.ns500612.ns500578.ns500110.dtrkdll.com, ns500759.ns500759.ns500759.ns500758.ns500758.ns500758.ns500735.ns500735.ns500735.ns500735.ns500735.ns500735.ns500708.ns500576.ns500686.ns500576.ns500619.trackreceptor.com and ns500731.ns500671.ns500754.ns500671.ns500754.ns500754.ns500705.ns500705.ns500291.ns500666.ns500131.lustychickser.com.
These mail servers are often used together with aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx4.googlemail.com and aspmx5.googlemail.com.
Two IPs per host name:
aspmx.l.google.com points to: 2607:f8b0:4023:c0b::1b and 142.250.101.26
alt1.aspmx.l.google.com points to: 2607:f8b0:4023:2801::1a and 192.178.128.27
alt2.aspmx.l.google.com points to: 2607:f8b0:4023:1015::1b and 172.253.135.26
alt3.aspmx.l.google.com points to: 2607:f8b0:4023:3003::1b and 172.253.145.26
alt4.aspmx.l.google.com points to: 2a00:1450:4025:c01::1a and 142.250.147.27
Pattern: left IDs ascend by 9 (12, 21, 30, 39, 48); each pair of targets ascend by 9 (15/18, 24/27, 33/36, 42/45, 51/54)