mail.tfbsystems.com - robtex.com

mail.tfbsystems.com

DNSSEC⚠️ Not signed
A71.251.215.163🇺🇸 AS70171.251.192.0/19 MCI Communications Services, LLC d/b/a Verizon Business
PTRstatic-71-251-215-163.nwrknj.fios.verizon.net

tfbsystems.com

DNSSEC⚠️ Not signed
A71.251.215.162🇺🇸 AS70171.251.192.0/19 MCI Communications Services, LLC d/b/a Verizon Business
NSns53.domaincontrol.com ⭐
NSns54.domaincontrol.com
MXincoming.tfbsystems.com ⭐
TXTv=spf1 ip4:71.251.215.162/29 a:relay.dynu.com mx -all
TXTMS=E8CDBA8F2D999F6EE5F14B4A3B2464EA96D992CB
TXTgoogle-site-verification=in-fT9plOfqsNVH2l25IlKOBNzLzPZA8aABClPSR2JQ
SOAns53.domaincontrol.comdns@jomax.net 2026-04-21 #3

Previously MX for

tfbsystems.com

Same first word

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DNS History

2 records (1 active, 1 former)

20162017201820192020202120222023202420252026A71.251.215.16375.99.132.110
●A71.251.215.1632026-04-12 → 2026-04-24 · 3 obs
○ 2016-04-26 06:25:16
● 2026-04-12 13:13:34
● 2026-04-24 21:35:12
○A75.99.132.1102015-06-20 → 2016-04-26 · 4 obs
● 2015-06-20 04:22:16
● 2016-04-26 06:25:16
○ 2026-04-12 13:13:34
○ 2026-04-24 21:35:12

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comm.gtld-servers.net, f.gtld-servers.net, k.gtld-servers.net, c.gtld-servers.net...-
tfbsystems.comns53.domaincontrol.com, ns54.domaincontrol.com4 records

✅ Authoritative Response

Server:97.74.106.27

NS records: ns53.domaincontrol.com, ns54.domaincontrol.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for tfbsystems.com (unsigned zone)

⏱️ Timing

Total: 94ms | Queries: -

📄 Records

TypeCountSample Data
A171.251.215.163

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns53.domaincontrol.com, ns53.domaincontrol.com, ns54.domaincontrol.com...)

Analysis

IP Addresses

mail.tfbsystems.com points to an IP address: 71.251.215.163.