`isfo.at`

DNSSEC	⚠️ Not signed
A	2606:4700:3034::ac43:a84f^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::6815:5e88^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.94.136^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.168.79^{🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`michael.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2c0c^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`michael.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c30c^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`michael.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:230c^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`michael.ns.cloudflare.com`
		A	108.162.195.12^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`michael.ns.cloudflare.com`
		A	162.159.44.12^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`michael.ns.cloudflare.com`
		A	172.64.35.12^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`michael.ns.cloudflare.com`
NS	`summer.ns.cloudflare.com`
		A	2606:4700:50::a29f:2609^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`summer.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c209^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`summer.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2209^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`summer.ns.cloudflare.com`
		A	108.162.194.9^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`summer.ns.cloudflare.com`
		A	162.159.38.9^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`summer.ns.cloudflare.com`
		A	172.64.34.9^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`summer.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.94.136, 172.67.168.79
		IPv6 hints	2606:4700:3034::ac43:a84f, 2606:4700:3037::6815:5e88
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=175, name=cloudflare-ech.com
SOA	`michael.ns.cloudflare.com`dns@cloudflare.com serial=2409964125

`at`

	DNSSEC	🔒 Signed (DS record present)
	NS	`dns.nic.at` ⭐
	NS	`d.ns.at`
	NS	`j.ns.at`
	NS	`n.ns.at`
	NS	`ns1.univie.ac.at`
	NS	`ns2.univie.ac.at`
	NS	`r.ns.at`
	NS	`u.ns.at`
	SOA	`dns.nic.at`domain-admin@univie.ac.at serial=1784502002

WOT: SAFE (68/100)

Same first word

isfo.org.tr

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isfo.ru

isfo.com

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isfo.cz

isfo.de

isfo.dk

isfo.it

isfo.eu

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DNS History

20 records (6 active, 14 former)

●NSmichael.ns.cloudflare.com2026-07-16 → 2026-07-20 · 3 obs

○ 2021-01-23 18:01:38
● 2026-07-16 07:05:52
● 2026-07-20 00:24:10

○NSns1.emerion.com2015-07-06 → 2021-01-23 · 4 obs

● 2015-07-06 16:44:28
● 2021-01-23 18:01:38
○ 2026-07-16 07:05:52
○ 2026-07-20 00:24:10

○NSns2.emerion.com2015-07-06 → 2021-01-23 · 4 obs

● 2015-07-06 16:44:28
● 2021-01-23 18:01:38
○ 2026-07-16 07:05:52
○ 2026-07-20 00:24:10

●NSsummer.ns.cloudflare.com2026-07-16 → 2026-07-20 · 3 obs

○ 2021-01-23 18:01:38
● 2026-07-16 07:05:52
● 2026-07-20 00:24:10

○MXinbound.isfo.at2015-07-06 → 2016-04-20 · 4 obs

● 2015-07-06 16:44:28
● 2016-04-20 12:09:00
○ 2017-02-14 12:22:26
○ 2026-07-20 00:24:10

○MXinbound1.isfo.at2017-02-14 → 2021-01-23 · 5 obs

○ 2016-04-20 12:09:00
● 2017-02-14 12:22:26
● 2021-01-23 18:01:38
○ 2026-07-16 07:05:52
○ 2026-07-20 00:24:10

○MXinbound2.isfo.at2016-04-20 → 2021-01-23 · 5 obs

○ 2015-07-06 16:44:28
● 2016-04-20 12:09:00
● 2021-01-23 18:01:38
○ 2026-07-16 07:05:52
○ 2026-07-20 00:24:10

○MXinbound3.isfo.at2017-02-14 → 2017-02-14 · 4 obs

○ 2016-04-20 12:09:00
● 2017-02-14 12:22:26
○ 2021-01-18 11:36:18
○ 2026-07-20 00:24:10

○MXinbound4.isfo.at2017-02-14 → 2017-02-14 · 4 obs

○ 2016-04-20 12:09:00
● 2017-02-14 12:22:26
○ 2021-01-18 11:36:18
○ 2026-07-20 00:24:10

●A104.21.94.1362026-07-20 → 2026-07-20 · 2 obs

○ 2026-07-16 07:05:52
● 2026-07-20 00:24:10

●A172.67.168.792026-07-20 → 2026-07-20 · 2 obs

○ 2026-07-16 07:05:52
● 2026-07-20 00:24:10

○A188.114.96.02026-07-16 → 2026-07-16 · 3 obs

○ 2021-01-23 18:01:38
● 2026-07-16 07:05:52
○ 2026-07-20 00:24:10

○A188.114.97.02026-07-16 → 2026-07-16 · 3 obs

○ 2021-01-23 18:01:38
● 2026-07-16 07:05:52
○ 2026-07-20 00:24:10

○A212.69.187.1012015-07-06 → 2016-04-20 · 4 obs

● 2015-07-06 16:44:28
● 2016-04-20 12:09:00
○ 2017-02-14 12:22:26
○ 2026-07-20 00:24:10

●A2606:4700:3034::ac43:a84f2026-07-20 → 2026-07-20 · 2 obs

○ 2026-07-16 07:05:52
● 2026-07-20 00:24:10

●A2606:4700:3037::6815:5e882026-07-20 → 2026-07-20 · 2 obs

○ 2026-07-16 07:05:52
● 2026-07-20 00:24:10

○A2a06:98c1:3120::2026-07-16 → 2026-07-16 · 3 obs

○ 2021-01-23 18:01:38
● 2026-07-16 07:05:52
○ 2026-07-20 00:24:10

○A2a06:98c1:3121::2026-07-16 → 2026-07-16 · 3 obs

○ 2021-01-23 18:01:38
● 2026-07-16 07:05:52
○ 2026-07-20 00:24:10

○A37.235.0.502017-02-14 → 2017-02-14 · 4 obs

○ 2016-04-20 12:09:00
● 2017-02-14 12:22:26
○ 2021-01-18 11:36:18
○ 2026-07-20 00:24:10

○A37.235.0.972021-01-18 → 2021-01-23 · 5 obs

○ 2017-02-14 12:22:26
● 2021-01-18 11:36:18
● 2021-01-23 18:01:38
○ 2026-07-16 07:05:52
○ 2026-07-20 00:24:10

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
at	n.ns.at, ns2.univie.ac.at, r.ns.at, j.ns.at...	-
isfo.at	summer.ns.cloudflare.com, michael.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.195.12

NS records: summer.ns.cloudflare.com, michael.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for isfo.at (unsigned zone)

⏱️ Timing

Total: 536ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.168.79, 104.21.94.136`
AAAA	2	`2606:4700:3037::6815:5e88, 2606:4700:3034::ac43:a84f`
NS	2	`michael.ns.cloudflare.com, summer.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`michael.ns.cloudflare.com dns.cloudflare`

Analysis

IP Addresses

isfo.at directs to four IP numbers, which are 104.21.94.136, 172.67.168.79, 2606:4700:3034::ac43:a84f and 2606:4700:3037::6815:5e88.

Among the host names that share IP numbers with isfo.at are cottelectronics.com, international-coaching-institute.com, kinotrack.app and two others.

Name Servers

isfo.at is served by two delegated name servers, michael.ns.cloudflare.com and summer.ns.cloudflare.com.

isfo.at has the same name server delegation as a number of other domains, such as scarielforte.com, vandeursenbodywear.nl, odoge.co and two more.

The name servers of isfo.at overlap at least partially with those of other domains — among them cdgengie.com, ytetaman.vn, omnixcapital2.sbs and two more.

These name servers commonly co-occur with the name servers raina.ns.cloudflare.com, seamus.ns.cloudflare.com, riya.ns.cloudflare.com and eoin.ns.cloudflare.com.

Host names resolving to 6 IP numbers:

michael.ns.cloudflare.com carries IP addresses 108.162.195.12, 162.159.44.12 and 172.64.35.12, with 3 other addresses beyond those.

summer.ns.cloudflare.com carries IP addresses 108.162.194.9, 162.159.38.9 and 172.64.34.9, with 3 other addresses beyond those.

isfo.at - robtex.com

isfo.at

at

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

`isfo.at`

`at`