isf-online.com - robtex.com

isf-online.com

DNSSEC⚠️ Not signed
A2606:4700:3032::ac43:d764🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::6815:3dd3🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.61.211Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.215.100🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSabdullah.ns.cloudflare.com ⭐
A2606:4700:58::a29f:2ccb🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRabdullah.ns.cloudflare.com
A2803:f800:50::6ca2:c3cb🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRabdullah.ns.cloudflare.com
A2a06:98c1:50::ac40:23cb🇺🇸 Cloudflare2a06:98c1:50::/45
PTRabdullah.ns.cloudflare.com
A108.162.195.203🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRabdullah.ns.cloudflare.com
A162.159.44.203Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRabdullah.ns.cloudflare.com
A172.64.35.203🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRabdullah.ns.cloudflare.com
NSdorthy.ns.cloudflare.com
A2606:4700:50::adf5:3af9🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdorthy.ns.cloudflare.com
A2803:f800:50::6ca2:c0f9🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRdorthy.ns.cloudflare.com
A2a06:98c1:50::ac40:20f9🇺🇸 Cloudflare2a06:98c1:50::/45
PTRdorthy.ns.cloudflare.com
A108.162.192.249🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdorthy.ns.cloudflare.com
A172.64.32.249🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdorthy.ns.cloudflare.com
A173.245.58.249🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdorthy.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.61.211, 172.67.215.100
IPv6 hints2606:4700:3032::ac43:d764, 2606:4700:3037::6815:3dd3
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=195, name=cloudflare-ech.com
SOAabdullah.ns.cloudflare.comdns@cloudflare.com serial=2409552768

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1784585022

Previously MX for

isf-online.com

Same first word

isf-online.ch
isf-online.com

Similar names

fis-online.de
ifs-online.net
insel-info.de
ifs-online.de
fsi-online.eu
fsi-online.de
ifs-online.org
fis-online.com
sfi-online.com
sfi-online.net
ifs-online.info
ifs-online.co.uk
ifs-online.eu

DNS History

25 records (6 active, 19 former)

200920112013201520172019202120232025NSabdullah.ns.cloudflare.comdorthy.ns.cloudflare.comdns1.worldsoft-isp.netdns2.worldsoft-isp.netjm1.dns.comjm2.dns.comns1.lipowered.netns2.lipowered.netMXisf-online.commx01.worldsoft-mail.netmx02.worldsoft-mail.netA104.21.61.211172.67.215.1002606:4700:3032::ac43:d7642606:4700:3037::6815:3dd3156.241.24.118162.208.49.155188.114.96.0188.114.97.0199.167.150.22209.133.214.17217.196.177.1312606:4700:3034::ac43:d7642a06:98c1:3120::2a06:98c1:3121::
●NSabdullah.ns.cloudflare.com2026-05-17 → 2026-07-20 · 3 obs
○ 2020-02-18 19:50:36
● 2026-05-17 04:59:30
● 2026-07-20 22:05:56
○NSdns1.worldsoft-isp.net2008-03-18 → 2008-03-18 · 3 obs
● 2008-03-18 09:52:32
○ 2015-06-24 03:25:28
○ 2026-07-20 22:05:56
○NSdns2.worldsoft-isp.net2008-03-18 → 2008-03-18 · 3 obs
● 2008-03-18 09:52:32
○ 2015-06-24 03:25:28
○ 2026-07-20 22:05:56
●NSdorthy.ns.cloudflare.com2026-05-17 → 2026-07-20 · 3 obs
○ 2020-02-18 19:50:36
● 2026-05-17 04:59:30
● 2026-07-20 22:05:56
○NSjm1.dns.com2020-02-18 → 2020-02-18 · 4 obs
○ 2017-03-30 13:50:10
● 2020-02-18 19:50:36
○ 2026-05-17 04:59:30
○ 2026-07-20 22:05:56
○NSjm2.dns.com2020-02-18 → 2020-02-18 · 4 obs
○ 2017-03-30 13:50:10
● 2020-02-18 19:50:36
○ 2026-05-17 04:59:30
○ 2026-07-20 22:05:56
○NSns1.lipowered.net2015-06-24 → 2017-03-30 · 5 obs
○ 2008-03-18 09:52:32
● 2015-06-24 03:25:28
● 2017-03-30 13:50:10
○ 2020-02-18 19:50:36
○ 2026-07-20 22:05:56
○NSns2.lipowered.net2015-06-24 → 2017-03-30 · 5 obs
○ 2008-03-18 09:52:32
● 2015-06-24 03:25:28
● 2017-03-30 13:50:10
○ 2020-02-18 19:50:36
○ 2026-07-20 22:05:56
○MXisf-online.com2015-06-24 → 2017-03-30 · 5 obs
○ 2008-03-18 09:52:32
● 2015-06-24 03:25:28
● 2017-03-30 13:50:10
○ 2020-02-18 19:50:36
○ 2026-07-20 22:05:56
○MXmx01.worldsoft-mail.net2008-03-18 → 2008-03-18 · 3 obs
● 2008-03-18 09:52:32
○ 2015-06-24 03:25:28
○ 2026-07-20 22:05:56
○MXmx02.worldsoft-mail.net2008-03-18 → 2008-03-18 · 3 obs
● 2008-03-18 09:52:32
○ 2015-06-24 03:25:28
○ 2026-07-20 22:05:56
●A104.21.61.2112026-05-17 → 2026-07-20 · 9 obs
○ 2020-02-18 19:50:36
● 2026-05-17 04:59:30
● 2026-06-06 10:02:38
○ 2026-06-08 20:46:14
● 2026-06-15 18:37:20
● 2026-06-17 19:21:40
○ 2026-06-20 00:15:42
● 2026-06-26 18:17:24
● 2026-07-20 22:05:56
○A156.241.24.1182020-02-18 → 2020-02-18 · 4 obs
○ 2017-03-30 13:50:10
● 2020-02-18 19:50:36
○ 2026-05-17 04:59:30
○ 2026-07-20 22:05:56
○A162.208.49.1552016-04-20 → 2017-03-30 · 5 obs
○ 2016-01-26 02:26:38
● 2016-04-20 05:50:54
● 2017-03-30 13:50:10
○ 2020-02-18 19:50:36
○ 2026-07-20 22:05:56
●A172.67.215.1002026-05-17 → 2026-07-20 · 9 obs
○ 2020-02-18 19:50:36
● 2026-05-17 04:59:30
● 2026-06-06 10:02:38
○ 2026-06-08 20:46:14
● 2026-06-15 18:37:20
● 2026-06-17 19:21:40
○ 2026-06-20 00:15:42
● 2026-06-26 18:17:24
● 2026-07-20 22:05:56
○A188.114.96.02026-06-08 → 2026-06-20 · 7 obs
○ 2026-06-06 10:02:38
● 2026-06-08 20:46:14
○ 2026-06-15 18:37:20
○ 2026-06-17 19:21:40
● 2026-06-20 00:15:42
○ 2026-06-26 18:17:24
○ 2026-07-20 22:05:56
○A188.114.97.02026-06-08 → 2026-06-20 · 7 obs
○ 2026-06-06 10:02:38
● 2026-06-08 20:46:14
○ 2026-06-15 18:37:20
○ 2026-06-17 19:21:40
● 2026-06-20 00:15:42
○ 2026-06-26 18:17:24
○ 2026-07-20 22:05:56
○A199.167.150.222015-06-24 → 2015-11-03 · 5 obs
○ 2008-03-18 09:52:32
● 2015-06-24 03:25:28
● 2015-11-03 01:03:48
○ 2016-01-26 02:26:38
○ 2026-07-20 22:05:56
○A209.133.214.172016-01-26 → 2016-01-26 · 4 obs
○ 2015-11-03 01:03:48
● 2016-01-26 02:26:38
○ 2016-04-20 05:50:54
○ 2026-07-20 22:05:56
○A217.196.177.1312008-03-18 → 2008-03-18 · 3 obs
● 2008-03-18 09:52:32
○ 2015-06-24 03:25:28
○ 2026-07-20 22:05:56
●A2606:4700:3032::ac43:d7642026-06-17 → 2026-07-20 · 5 obs
○ 2026-06-16 23:54:04
● 2026-06-17 19:21:40
○ 2026-06-20 00:15:42
● 2026-06-26 18:17:24
● 2026-07-20 22:05:56
○A2606:4700:3034::ac43:d7642026-05-17 → 2026-06-16 · 8 obs
○ 2020-02-18 19:50:36
● 2026-05-17 04:59:30
● 2026-06-06 10:02:38
○ 2026-06-08 20:46:14
● 2026-06-15 18:37:20
● 2026-06-16 23:54:04
○ 2026-06-17 19:21:40
○ 2026-07-20 22:05:56
●A2606:4700:3037::6815:3dd32026-05-17 → 2026-07-20 · 9 obs
○ 2020-02-18 19:50:36
● 2026-05-17 04:59:30
● 2026-06-06 10:02:38
○ 2026-06-08 20:46:14
● 2026-06-15 18:37:20
● 2026-06-17 19:21:40
○ 2026-06-20 00:15:42
● 2026-06-26 18:17:24
● 2026-07-20 22:05:56
○A2a06:98c1:3120::2026-06-08 → 2026-06-20 · 7 obs
○ 2026-06-06 10:02:38
● 2026-06-08 20:46:14
○ 2026-06-15 18:37:20
○ 2026-06-17 19:21:40
● 2026-06-20 00:15:42
○ 2026-06-26 18:17:24
○ 2026-07-20 22:05:56
○A2a06:98c1:3121::2026-06-08 → 2026-06-20 · 7 obs
○ 2026-06-06 10:02:38
● 2026-06-08 20:46:14
○ 2026-06-15 18:37:20
○ 2026-06-17 19:21:40
● 2026-06-20 00:15:42
○ 2026-06-26 18:17:24
○ 2026-07-20 22:05:56

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
isf-online.comdorthy.ns.cloudflare.com, abdullah.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.195.203

NS records: dorthy.ns.cloudflare.com, abdullah.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for isf-online.com (unsigned zone)

⏱️ Timing

Total: 156ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.215.100, 104.21.61.211
AAAA22606:4700:3032::ac43:d764, 2606:4700:3037::6815:3dd3
NS2abdullah.ns.cloudflare.com, dorthy.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1abdullah.ns.cloudflare.com dns.cloudflar

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (dorthy.ns.cloudflare.com, dorthy.ns.cloudflare.com, dorthy.ns.cloudflare.com...)

Analysis

IP Addresses

isf-online.com points to the four IP addresses 104.21.61.211, 172.67.215.100, 2606:4700:3032::ac43:d764 and 2606:4700:3037::6815:3dd3.

Two other host names, along with gyhdmj.com, www.qyyn.net and travelconnector.com, also share IP numbers with isf-online.com.

Name Servers

Two name servers handle the delegation for isf-online.com: abdullah.ns.cloudflare.com and dorthy.ns.cloudflare.com.

isf-online.com shares its NS records with other domains, for example etongeducation.com, huaibeilz.com, cnchensheng.com and two others.

There is at least partial name server overlap between isf-online.com and other domains — sethiangame.com, bigkahunas.net, softstonehouse.xyz and two more among them.

The name servers rayden.ns.cloudflare.com, aleena.ns.cloudflare.com and clara.ns.cloudflare.com are often found in combination with these name servers.

DNS names with 6 IP addresses:

abdullah.ns.cloudflare.com resolves to 108.162.195.203, 162.159.44.203 and 172.64.35.203 among others, with 3 other IP addresses in total.

dorthy.ns.cloudflare.com resolves to 108.162.192.249, 172.64.32.249 and 173.245.58.249 among others, with 3 other IP addresses in total.