`dynamic239.math.cinvestav.mx`

DNSSEC	⚠️ Not signed
A	148.247.186.239^{🇲🇽 AS3548148.247.186.0/24 CINVESTAV}
		PTR	`dynamic239.math.cinvestav.mx`
MX	`ninguno.math.cinvestav.mx` ⭐
		A	127.0.0.1
TXT	`v=spf1 -all`

`math.cinvestav.mx`

	DNSSEC	⚠️ Not signed
	A	148.247.67.24^{🇲🇽 AS3548148.247.67.0/24 CINVESTAV}
	NS	`dns.math.cinvestav.mx` ⭐
	NS	`dns.esfm.ipn.mx`
	NS	`dns.fis.cinvestav.mx`
	NS	`ns.esfm.ipn.mx`
	MX	`login.math.cinvestav.mx` ⭐
	TXT	`v=spf1 ip4:148.247.186.0/24 ip4:35.172.52.194 ip4:187.141.45.194 -all`
	SOA	`dns.math.cinvestav.mx`enriquez@math.cinvestav.mx serial=201802043

WOT: SAFE (62/100)

PTR for

239.186.247.148.in-addr.arpa

DNS History

2 records (2 active, 0 former)

●MXninguno.math.cinvestav.mx2026-03-10 → 2026-06-08 · 2 obs

● 2026-03-10 15:59:44
● 2026-06-08 08:18:10

●A148.247.186.2392026-03-10 → 2026-06-08 · 2 obs

● 2026-03-10 15:59:44
● 2026-06-08 08:18:10

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
mx	c.mx-ns.mx, e.mx-ns.mx, i.mx-ns.mx, m.mx-ns.mx...	-
cinvestav.mx	soun.red.cinvestav.mx, mvax1.red.cinvestav.mx, dns3.tamps.cinvestav.mx	3 records
math.cinvestav.mx	dns.fis.cinvestav.mx, dns.esfm.ipn.mx, dns.math.cinvestav.mx, ns.esfm.ipn.mx	2 records

✅ Authoritative Response

Server:148.247.186.5

NS records: dns.fis.cinvestav.mx, dns.esfm.ipn.mx, dns.math.cinvestav.mx, ns.esfm.ipn.mx

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cinvestav.mx (unsigned zone)

⏱️ Timing

Total: 637ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`148.247.186.239`
MX	1	`ninguno.math.cinvestav.mx (pri: 39)`
TXT	1	`v=spf1 -all`

📌 Glue Records Collected

Total: 5

In-bailiwick: 4 (mvax1.red.cinvestav.mx, soun.red.cinvestav.mx, dns3.tamps.cinvestav.mx...)

Out-of-bailiwick: 1 (dns.fis.cinvestav.mx)

Analysis

IP Addresses

dynamic239.math.cinvestav.mx has exactly one IP address — 148.247.186.239.

Mail Servers

dynamic239.math.cinvestav.mx uses one mail server — ninguno.math.cinvestav.mx.

The mail server setup of dynamic239.math.cinvestav.mx matches that of other domains such as fsagols.math.cinvestav.mx, of-125.math.cinvestav.mx, dynamic233.math.cinvestav.mx and two others.

ninguno.math.cinvestav.mx carries a single IP number, which is 127.0.0.1.

dynamic239.math.cinvestav.mx - robtex.com