cbtis271.edu.mx - robtex.com
cbtis271.edu.mx
edu.mx
| DNSSEC | ⚠️ Not signed | ||||||
| NS | m.mx-ns.mx ⭐ ⚠️ Not in parent delegation | ||||||
| NS | c.mx-ns.mx ⚠️ Not in parent delegation | ||||||
| NS | e.mx-ns.mx ⚠️ Not in parent delegation | ||||||
| NS | i.mx-ns.mx ⚠️ Not in parent delegation | ||||||
| NS | o.mx-ns.mx ⚠️ Not in parent delegation | ||||||
| NS | x.mx-ns.mx ⚠️ Not in parent delegation | ||||||
| TXT | v=spf1 -all | ||||||
| SOA | m.mx-ns.mxhostmaster@nic.mx serial=1778297105 | ||||||
Previously MX for
cbtis271.edu.mx |
Same first word
cbtis271.edu.mx |
Similar names
DNS History
12 records (8 active, 4 former)
○NSdns1.guiaescolar.net2019-01-09 → 2019-10-26 · 4 obs
● 2019-10-26 02:23:08
○ 2026-03-30 16:32:24
○ 2026-05-09 13:36:38
○NSdns2.guiaescolar.net2019-01-09 → 2019-10-26 · 4 obs
● 2019-10-26 02:23:08
○ 2026-03-30 16:32:24
○ 2026-05-09 13:36:38
●NSnode1-sdf1.guiaescolar.net2026-03-30 → 2026-05-09 · 3 obs
● 2026-03-30 16:32:24
● 2026-05-09 13:36:38
●NSnode2-sdf1.guiaescolar.net2026-03-30 → 2026-05-09 · 3 obs
● 2026-03-30 16:32:24
● 2026-05-09 13:36:38
●MXalt1.aspmx.l.google.com2026-03-30 → 2026-05-09 · 3 obs
● 2026-03-30 16:32:24
● 2026-05-09 13:36:38
●MXalt2.aspmx.l.google.com2026-03-30 → 2026-05-09 · 3 obs
● 2026-03-30 16:32:24
● 2026-05-09 13:36:38
●MXalt3.aspmx.l.google.com2026-03-30 → 2026-05-09 · 3 obs
● 2026-03-30 16:32:24
● 2026-05-09 13:36:38
●MXalt4.aspmx.l.google.com2026-03-30 → 2026-05-09 · 3 obs
● 2026-03-30 16:32:24
● 2026-05-09 13:36:38
●MXaspmx.l.google.com2026-03-30 → 2026-05-09 · 3 obs
● 2026-03-30 16:32:24
● 2026-05-09 13:36:38
○MXcbtis271.edu.mx2019-01-09 → 2019-10-26 · 4 obs
● 2019-10-26 02:23:08
○ 2026-03-30 16:32:24
○ 2026-05-09 13:36:38
○A188.165.246.742019-01-09 → 2019-10-26 · 4 obs
● 2019-10-26 02:23:08
○ 2026-03-30 16:32:24
○ 2026-05-09 13:36:38
●A192.99.21.1062026-03-30 → 2026-05-09 · 3 obs
● 2026-03-30 16:32:24
● 2026-05-09 13:36:38
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| mx | c.mx-ns.mx, e.mx-ns.mx, i.mx-ns.mx, m.mx-ns.mx... | - |
| cbtis271.edu.mx | node1-sdf1.guiaescolar.net, node2-sdf1.guiaescolar.net | - |
✅ Authoritative Response
Server:192.99.21.106
NS records: node1-sdf1.guiaescolar.net, node2-sdf1.guiaescolar.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for cbtis271.edu.mx (unsigned zone)
⏱️ Timing
Total: 627ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 192.99.21.106 |
| NS | 2 | node1-sdf1.guiaescolar.net, node2-sdf1.guiaescolar.net |
| MX | 5 | aspmx.l.google.com (pri: 1), alt1.aspmx.l.google.com (pri: 5)... |
| TXT | 1 | v=spf1 +a +mx +ip4:192.99.21.106 ~all |
| SOA | 1 | node1-sdf1.guiaescolar.net postmaster.cb |
Analysis
IP Addresses
cbtis271.edu.mx points to a single IP: 192.99.21.106.
Other host names, for instance sdf1.guiaescolar.net, rentaplasmas.com.mx, unt.edu.mx, node1-sdf1.guiaescolar.net and oliverio.edu.mx share IP numbers with cbtis271.edu.mx.
Name Servers
Two name servers node1-sdf1.guiaescolar.net and node2-sdf1.guiaescolar.net handle delegation for cbtis271.edu.mx.
cbtis271.edu.mx uses the same name server setup as other domains, for example danzashop.net, vocesdelperiodista.com.mx, celv.edu.mx, percom.com.mx and institutomatatipac.edu.mx.
Host names with one IP number
Host name node1-sdf1.guiaescolar.net points to 192.99.21.106
Host name node2-sdf1.guiaescolar.net points to 192.99.21.106
Host names that point to 192.99.21.106: node1-sdf1.guiaescolar.net and node2-sdf1.guiaescolar.net
Mail Servers
Five mail servers handle cbtis271.edu.mx: 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.
cbtis271.edu.mx shares some mail servers with other domains, at least partially, such as ns500754.ns500754.ns500754.ns500754.ns500754.ns500754.ns500742.ns500678.ns500671.ns500649.ns500649.ns500666.tenderladiesbz.com, ns500754.ns500742.ns500671.ns500742.ns500742.ns500754.ns500671.ns500731.ns500705.ns500678.ns500705.ns500671.ns500649.ns500649.ns500666.ns500142.lusty(0x736c7574)z.com, ns500768.ns500759.ns500758.ns500759.ns500758.ns500698.ns500736.ns500576.ns500652.ns500652.ns500652.ns500652.ns500619.ns500652.tracksymphony.com, ns500742.ns500754.ns500671.ns500754.ns500731.ns500704.ns500704.ns500671.ns500688.ns500291.ns500649.ns500142.lusty(0x736c7574)z.com and ns500742.ns500671.ns500742.ns500671.ns500731.ns500704.ns500671.ns500671.ns500688.ns500705.ns500678.ns500291.ns500649.ns500142.lusty(0x736c7574)z.com.
These mail servers are often used with aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx4.googlemail.com and aspmx5.googlemail.com.
Host names with two IP numbers:
aspmx.l.google.com points to: 2607:f8b0:4023:c0b::1a and 142.251.2.26
alt1.aspmx.l.google.com points to: 2800:3f0:4003:c0f::1a and 108.177.123.26
alt2.aspmx.l.google.com points to: 2a00:1450:400b:c02::1b and 172.253.116.27
alt3.aspmx.l.google.com points to: 2a00:1450:4009:c0f::1b and 192.178.223.26
alt4.aspmx.l.google.com points to: 2a00:1450:400c:c00::1a and 173.194.76.27