`pbxrt.net`

DNSSEC	⚠️ Not signed
A	209.105.241.21^{🇺🇸 COREXCHANGE-AS209.105.224.0/19 CoreXchange 1950 Stemmons Frwy Suite 4006 Dallas, TX 75207}
		PTR	`pbxrealtime.com`
		PTR	`pbxrt.net`
		PTR	`hostedpbx.1-voip.com`
NS	`ns1.5ninestelecom.com` ⭐ ⚠️ Not in zone NS records
		A	209.105.241.30^{🇺🇸 COREXCHANGE-AS209.105.224.0/19 CoreXchange 1950 Stemmons Frwy Suite 4006 Dallas, TX 75207}
			PTR	`dns2.vylmedia.com`
NS	`ns2.5ninestelecom.com` ⚠️ Not in zone NS records
		A	64.125.34.51^{🇺🇸 AS646164.125.0.0/16}
			PTR	`64.125.34.51.idia-393847-zyo.zip.zayo.com`
NS	`ns3.5ninestelecom.com` ⚠️ Not in zone NS records
		A	67.222.136.119^{🇺🇸 AS3027767.222.128.0/20}
			PTR	`67.222.136.119.static.rivalserver.com`
MX	`mail.pbxrt.net` ⭐
		A	69.59.30.105^{🇺🇸 Amazon69.59.30.0/24 1-VoIP Enhanced Services, LLC}
			PTR	`mail.voipperformance.net`
TXT	`qm5vv89qjpn7rbitjash0td9f1`
SOA	`ns1.5ninestelecom.com`admin@5ninestelecom.com 2026-01-26 #2

`net`

	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.net`nstld@verisign-grs.com serial=1774371357

PTR for

21.241.105.209.in-addr.arpa

21.0-25.241.105.209.in-addr.arpa

Subdomains

mail.pbxrt.net

Same first word

pbxrt.net

Similar names

pbrtx.com

brtpx.com

trpbx.com

bprtx.com

ptbrx.com

btprx.com

DNS History

6 records (5 active, 1 former)

●NSns1.5ninestelecom.com2015-08-22 → 2026-03-24 · 5 obs

● 2015-08-22 04:42:00
● 2016-07-13 12:35:54
○ 2017-03-18 05:57:18
○ 2020-02-29 18:15:34
● 2026-03-24 17:08:32

●NSns2.5ninestelecom.com2026-03-24 → 2026-03-24 · 2 obs

○ 2020-02-29 18:15:34
● 2026-03-24 17:08:32

●NSns3.5ninestelecom.com2020-02-29 → 2026-03-24 · 3 obs

○ 2017-03-18 05:57:18
● 2020-02-29 18:15:34
● 2026-03-24 17:08:32

○NSns3.5ninestelecom.com.pbxrt.net2017-03-18 → 2017-03-18 · 4 obs

○ 2016-07-13 12:35:54
● 2017-03-18 05:57:18
○ 2020-02-29 18:15:34
○ 2026-03-24 17:08:32

●MXmail.pbxrt.net2016-03-19 → 2026-03-24 · 2 obs

● 2016-03-19 20:43:24
● 2026-03-24 17:08:32

●A209.105.241.212015-08-22 → 2026-03-24 · 2 obs

● 2015-08-22 04:42:00
● 2026-03-24 17:08:32

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
net	m.gtld-servers.net, j.gtld-servers.net, l.gtld-servers.net, f.gtld-servers.net...	-
pbxrt.net	ns1.5ninestelecom.com, ns2.5ninestelecom.com, ns3.5ninestelecom.com	-

✅ Authoritative Response

Server:209.105.241.30

NS records: ns1.5ninestelecom.com, ns2.5ninestelecom.com, ns3.5ninestelecom.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for pbxrt.net (unsigned zone)

⏱️ Timing

Total: 3750ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`209.105.241.21`
MX	1	`mail.pbxrt.net (pri: 10)`
TXT	1	`qm5vv89qjpn7rbitjash0td9f1`
SOA	1	`ns1.5ninestelecom.com admin.5ninesteleco`

Analysis

Hierarchy

The parent of mail.pbxrt.net is pbxrt.net.

IP Addresses

pbxrt.net points to a single IP address: 209.105.241.21.

Other host names, such as pbxrt-srv.voipperformance.net and pbxrt-1.voipperformance.net, share IP numbers with pbxrt.net.

Name Servers

pbxrt.net is delegated to three name servers: ns1.5ninestelecom.com, ns2.5ninestelecom.com and ns3.5ninestelecom.com.

pbxrt.net at least partially shares name servers with other domains, for example 1-voip.biz, free4less.com, vylmedia.com, touchtonesolutions.com and phonedashboard.com.

Host names with a single IP address:

ns1.5ninestelecom.com resolves to 209.105.241.30.

ns2.5ninestelecom.com resolves to 64.125.34.51.

ns3.5ninestelecom.com resolves to 67.222.136.119.

Mail Servers

The mail.pbxrt.net mail server handles pbxrt.net.

mail.pbxrt.net points to a single IP number: 69.59.30.105.

pbxrt.net - robtex.com

pbxrt.net

net