openstf.io - robtex.com

openstf.io

DNSSEC⚠️ Not signed
A172.241.24.147🇺🇸 LEASEWEB-US172.241.24.0/21 Leaseweb USA, Inc.
PTRopal4.opalstack.com
NSns2.us.opalstack.com ⭐
A23.92.21.232🇺🇸 AKAMAI-LINODE-AP23.92.16.0/21 Akamai Technologies
PTRns2.us.opalstack.com
NSns1.us.opalstack.com
A45.79.107.55🇺🇸 AKAMAI-LINODE-AP45.79.96.0/20 Akamai Technologies
PTRns1.us.opalstack.com
NSns3.us.opalstack.com ⚠️ Not in parent delegation
A45.56.74.5🇺🇸 AKAMAI-LINODE-AP45.56.64.0/20 Akamai Technologies
PTRns3.us.opalstack.com
MXmx1.us.opalstack.com ⭐
A108.62.123.121🇺🇸 LEASEWEB-US108.62.120.0/22 Leaseweb USA, Inc.
PTRmx1.us.opalstack.com
MXmx2.us.opalstack.com ⭐
A2605:fe80:2100:bf03:7::2🇺🇸 AS72032605:fe80::/32 Leaseweb USA, Inc. SFO-12 US
PTRmx2.us.opalstack.com
A23.82.16.244🇺🇸 AS720323.82.16.0/21 Leaseweb USA, Inc.
PTRmx2.us.opalstack.com
TXTv=spf1 include:spf.opalstack.com ~all
SOAns2.us.opalstack.comhostmaster@openstf.io 2026-04-17 #6

io

DNSSEC🔒 Signed (DS record present)
NSa0.nic.io ⭐
NSa2.nic.io
NSb0.nic.io
NSc0.nic.io
SOAa0.nic.iohostmaster@donuts.email serial=1776711782

Same first word

openstf.io

Similar names

openfst.org
epnsoft.com
pensoft.co.uk
softpen.com
stopfen.net
nepsoft.com
stonefp.com
pensoft.com
pensoft.co.ke
stopfen.com
pfosten.com
pfosten.ch
pensoft.co.za
stopfen.biz
softnep.com
fopsnet.com
fptones.com
fstenpo.com
pensoft.in
softnep.info
fenpost.com
fnetops.net
ponfest.com
softnep.org
neosftp.com
stopfen.at
stopfen.de
stopfen.org
stopfen.mobi
pfosten.org
sptfone.vn
softnep.us
pensoft.eu
stopfen.info
softnep.tools
fnetops.com
stopfen.ch
pensoft.net
pfosten.de
spofnet.herokuapp.com
softnep.net

DNS History

23 records (6 active, 17 former)

2017201820192020202120222023202420252026NSns1.us.opalstack.comns2.us.opalstack.comns3.us.opalstack.comaida.ns.cloudflare.combrett.ns.cloudflare.comMXmx1.us.opalstack.commx2.us.opalstack.comalt1.aspmx.l.google.comalt2.aspmx.l.google.comaspmx.l.google.comaspmx2.googlemail.comaspmx3.googlemail.comA172.241.24.147104.24.14.12104.24.15.12104.26.0.5104.26.1.5172.67.72.572400:cb00:2048:1::6818:e0c2400:cb00:2048:1::6818:f0c2606:4700:20::681a:1052606:4700:20::681a:52606:4700:20::ac43:4839
○NSaida.ns.cloudflare.com2016-12-28 → 2021-05-21 · 4 obs
● 2016-12-28 20:55:56
● 2021-05-21 23:07:38
○ 2026-03-23 12:19:48
○ 2026-04-20 19:24:58
○NSbrett.ns.cloudflare.com2016-12-28 → 2021-05-21 · 4 obs
● 2016-12-28 20:55:56
● 2021-05-21 23:07:38
○ 2026-03-23 12:19:48
○ 2026-04-20 19:24:58
●NSns1.us.opalstack.com2026-03-23 → 2026-04-20 · 3 obs
○ 2021-05-21 23:07:38
● 2026-03-23 12:19:48
● 2026-04-20 19:24:58
●NSns2.us.opalstack.com2026-03-23 → 2026-04-20 · 3 obs
○ 2021-05-21 23:07:38
● 2026-03-23 12:19:48
● 2026-04-20 19:24:58
●NSns3.us.opalstack.com2026-03-23 → 2026-04-20 · 3 obs
○ 2021-05-21 23:07:38
● 2026-03-23 12:19:48
● 2026-04-20 19:24:58
○MXalt1.aspmx.l.google.com2016-12-28 → 2021-05-21 · 4 obs
● 2016-12-28 20:55:56
● 2021-05-21 23:07:38
○ 2026-03-23 12:19:48
○ 2026-04-20 19:24:58
○MXalt2.aspmx.l.google.com2016-12-28 → 2021-05-21 · 4 obs
● 2016-12-28 20:55:56
● 2021-05-21 23:07:38
○ 2026-03-23 12:19:48
○ 2026-04-20 19:24:58
○MXaspmx.l.google.com2016-12-28 → 2021-05-21 · 4 obs
● 2016-12-28 20:55:56
● 2021-05-21 23:07:38
○ 2026-03-23 12:19:48
○ 2026-04-20 19:24:58
○MXaspmx2.googlemail.com2016-12-28 → 2021-05-21 · 4 obs
● 2016-12-28 20:55:56
● 2021-05-21 23:07:38
○ 2026-03-23 12:19:48
○ 2026-04-20 19:24:58
○MXaspmx3.googlemail.com2016-12-28 → 2021-05-21 · 4 obs
● 2016-12-28 20:55:56
● 2021-05-21 23:07:38
○ 2026-03-23 12:19:48
○ 2026-04-20 19:24:58
●MXmx1.us.opalstack.com2026-03-23 → 2026-04-20 · 3 obs
○ 2021-05-21 23:07:38
● 2026-03-23 12:19:48
● 2026-04-20 19:24:58
●MXmx2.us.opalstack.com2026-03-23 → 2026-04-20 · 3 obs
○ 2021-05-21 23:07:38
● 2026-03-23 12:19:48
● 2026-04-20 19:24:58
○A104.24.14.122016-12-28 → 2016-12-28 · 3 obs
● 2016-12-28 20:55:56
○ 2021-05-21 23:07:38
○ 2026-04-20 19:24:58
○A104.24.15.122016-12-28 → 2016-12-28 · 3 obs
● 2016-12-28 20:55:56
○ 2021-05-21 23:07:38
○ 2026-04-20 19:24:58
○A104.26.0.52021-05-21 → 2021-05-21 · 4 obs
○ 2016-12-28 20:55:56
● 2021-05-21 23:07:38
○ 2026-03-23 12:19:48
○ 2026-04-20 19:24:58
○A104.26.1.52021-05-21 → 2021-05-21 · 4 obs
○ 2016-12-28 20:55:56
● 2021-05-21 23:07:38
○ 2026-03-23 12:19:48
○ 2026-04-20 19:24:58
●A172.241.24.1472026-03-23 → 2026-04-20 · 3 obs
○ 2021-05-21 23:07:38
● 2026-03-23 12:19:48
● 2026-04-20 19:24:58
○A172.67.72.572021-05-21 → 2021-05-21 · 4 obs
○ 2016-12-28 20:55:56
● 2021-05-21 23:07:38
○ 2026-03-23 12:19:48
○ 2026-04-20 19:24:58
○A2400:cb00:2048:1::6818:e0c2016-12-28 → 2016-12-28 · 3 obs
● 2016-12-28 20:55:56
○ 2021-05-21 23:07:38
○ 2026-04-20 19:24:58
○A2400:cb00:2048:1::6818:f0c2016-12-28 → 2016-12-28 · 3 obs
● 2016-12-28 20:55:56
○ 2021-05-21 23:07:38
○ 2026-04-20 19:24:58
○A2606:4700:20::681a:1052021-05-21 → 2021-05-21 · 4 obs
○ 2016-12-28 20:55:56
● 2021-05-21 23:07:38
○ 2026-03-23 12:19:48
○ 2026-04-20 19:24:58
○A2606:4700:20::681a:52021-05-21 → 2021-05-21 · 4 obs
○ 2016-12-28 20:55:56
● 2021-05-21 23:07:38
○ 2026-03-23 12:19:48
○ 2026-04-20 19:24:58
○A2606:4700:20::ac43:48392021-05-21 → 2021-05-21 · 4 obs
○ 2016-12-28 20:55:56
● 2021-05-21 23:07:38
○ 2026-03-23 12:19:48
○ 2026-04-20 19:24:58

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
ioa0.nic.io, a2.nic.io, b0.nic.io, c0.nic.io-
openstf.ions2.us.opalstack.com, ns1.us.opalstack.com-

✅ Authoritative Response

Server:23.92.21.232

NS records: ns2.us.opalstack.com, ns1.us.opalstack.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for openstf.io (unsigned zone)

⏱️ Timing

Total: 3542ms | Queries: -

📄 Records

TypeCountSample Data
A1172.241.24.147
NS3ns3.us.opalstack.com, ns2.us.opalstack.com...
MX2mx2.us.opalstack.com (pri: 10), mx1.us.opalstack.com (pri: 10)
TXT1v=spf1 include:spf.opalstack.com ~all
SOA1ns2.us.opalstack.com hostmaster.openstf.

Analysis

IP Addresses

openstf.io maps to IP address 172.241.24.147.

Other host names, for instance hostmaster.ingraye.net, dfk.ca, genteba.com.ar, windspot.es and frecuencialatina.com.pe share IP numbers with openstf.io.

Name Servers

openstf.io is delegated to name servers ns1.us.opalstack.com, ns2.us.opalstack.com and ns3.us.opalstack.com.

openstf.io at least partially shares name servers with other domains such as 3o1.us, cci.ca, russturley.com, turismoi.pe and timehorse.com.

Host names with a single IP:

ns1.us.opalstack.com points to 45.79.107.55

ns2.us.opalstack.com points to 23.92.21.232

ns3.us.opalstack.com points to 45.56.74.5

Mail Servers

Two mail servers handle openstf.io: mx1.us.opalstack.com and mx2.us.opalstack.com.

openstf.io shares the same mail server setup as other domains, including mensretreat.org, 227impact.com, socialink.net, hanginghyena.com and trenpatagonico-sa.com.ar.

openstf.io shares some mail servers with other domains, at least partially, for instance lickyousillypetproducts.com.

Host names by IP count:

Two IP numbers: The host name mx2.us.opalstack.com points to 2605:fe80:2100:bf03:7::2 and 23.82.16.244.

One IP number: The host name mx1.us.opalstack.com points to 108.62.123.121.