`4fup.ai`

DNSSEC	⚠️ Not signed
A	13.226.144.19
		PTR	`server-13-226-144-19.lhr86.r.cloudfront.net`
A	13.226.144.69
A	13.226.144.91
A	13.226.144.99
NS	`ns-1494.awsdns-58.org` ⭐
		A	2600:9000:5305:d600::1^{🇺🇸 Amazon2600:9000:5305::/48 - CloudFront}
			PTR	`ns-1494.awsdns-58.org`
		A	205.251.197.214^{🇺🇸 Amazon205.251.197.0/24 prefix}
			PTR	`ns-1494.awsdns-58.org`
NS	`ns-1922.awsdns-48.co.uk`
		A	2600:9000:5307:8200::1^{🇺🇸 Amazon2600:9000:5307::/48 - CloudFront}
			PTR	`ns-1922.awsdns-48.co.uk`
		A	205.251.199.130^{🇺🇸 Amazon205.251.199.0/24 prefix}
			PTR	`ns-1922.awsdns-48.co.uk`
NS	`ns-289.awsdns-36.com`
		A	2600:9000:5301:2100::1^{🇺🇸 Amazon2600:9000:5301::/48 - CloudFront}
			PTR	`ns-289.awsdns-36.com`
		A	205.251.193.33^{🇺🇸 Amazon205.251.193.0/24 prefix}
			PTR	`ns-289.awsdns-36.com`
NS	`ns-692.awsdns-22.net`
		A	2600:9000:5302:b400::1^{🇺🇸 Amazon2600:9000:5302::/48 - CloudFront}
			PTR	`ns-692.awsdns-22.net`
		A	205.251.194.180^{🇺🇸 Amazon205.251.194.0/24 prefix}
			PTR	`ns-692.awsdns-22.net`
MX	`smtp.secureserver.net` ⭐
		A	216.69.141.71^{🇺🇸 AS398101216.69.140.0/22}
			PTR	`osplibsmtp01-v01.prod.phx3.secureserver.net`
		A	216.69.141.84^{🇺🇸 AS398101216.69.140.0/22}
			PTR	`osplibsmtp02-v01.prod.phx3.secureserver.net`
		A	216.69.141.113^{🇺🇸 AS398101216.69.140.0/22}
			PTR	`osplibsmtp03-v01.prod.phx3.secureserver.net`
MX	`mailstore1.secureserver.net`⁽¹⁰⁾
		A	216.69.141.78^{🇺🇸 AS398101216.69.140.0/22}
			PTR	`osplibsmtp01-v02.prod.phx3.secureserver.net`
		A	216.69.141.114^{🇺🇸 AS398101216.69.140.0/22}
			PTR	`osplibsmtp03-v02.prod.phx3.secureserver.net`
		A	216.69.141.162^{🇺🇸 AS398101216.69.140.0/22}
			PTR	`osplibsmtp02-v02.prod.phx3.secureserver.net`
TXT	`D8012610`
TXT	`v=spf1 include:secureserver.net -all`
SOA	`ns-1494.awsdns-58.org`awsdns-hostmaster@amazon.com serial=1

`ai`

	DNSSEC	🔒 Signed (DS record present)
	NS	`v0n0.nic.ai` ⭐
	NS	`v0n1.nic.ai`
	NS	`v0n2.nic.ai`
	NS	`v0n3.nic.ai`
	NS	`v2n0.nic.ai`
	NS	`v2n1.nic.ai`
	SOA	`v0n0.nic.ai`hostmaster@donuts.email serial=1774794005

Same first word

4fup.ai

Similar names

f4up.com

pf4u.de

fp4u.co.uk

fp4u.com

DNS History

30 records (10 active, 20 former)

●NSns-1494.awsdns-58.org2026-02-18 → 2026-03-29 · 2 obs

● 2026-02-18 17:20:58
● 2026-03-29 14:35:32

●NSns-1922.awsdns-48.co.uk2026-02-18 → 2026-03-29 · 2 obs

● 2026-02-18 17:20:58
● 2026-03-29 14:35:32

●NSns-289.awsdns-36.com2026-02-18 → 2026-03-29 · 2 obs

● 2026-02-18 17:20:58
● 2026-03-29 14:35:32

●NSns-692.awsdns-22.net2026-02-18 → 2026-03-29 · 2 obs

● 2026-02-18 17:20:58
● 2026-03-29 14:35:32

●MXmailstore1.secureserver.net2026-02-18 → 2026-03-29 · 2 obs

● 2026-02-18 17:20:58
● 2026-03-29 14:35:32

●MXsmtp.secureserver.net2026-02-18 → 2026-03-29 · 2 obs

● 2026-02-18 17:20:58
● 2026-03-29 14:35:32

●A13.226.144.192026-02-18 → 2026-03-29 · 118 obs

○ 2026-02-18 17:20:58
● 2026-02-18 23:08:18
● 2026-02-19 12:14:34
○ 2026-02-20 03:25:34
○ 2026-02-20 11:01:44
● 2026-02-20 14:48:14
○ 2026-02-20 16:59:10
○ 2026-02-21 12:03:18
● 2026-02-21 15:06:12
○ 2026-02-21 16:46:04
● 2026-02-22 02:43:14
● 2026-02-23 15:13:12
○ 2026-02-23 16:30:22
○ 2026-02-23 23:44:50
● 2026-02-24 01:28:16
● 2026-02-24 17:28:52
○ 2026-02-24 21:57:14
● 2026-02-25 01:30:10
○ 2026-02-25 21:56:18
● 2026-02-26 01:27:58
○ 2026-02-26 18:19:04
● 2026-02-26 21:04:34
● 2026-02-27 01:35:12
○ 2026-02-27 14:24:32
● 2026-02-28 01:27:50
● 2026-03-01 05:49:06
○ 2026-03-02 00:56:58
● 2026-03-02 08:50:26
○ 2026-03-03 01:01:10
● 2026-03-03 11:33:18
○ 2026-03-04 23:28:42
● 2026-03-05 02:45:36
● 2026-03-05 06:39:36
○ 2026-03-05 22:41:36
● 2026-03-05 23:46:32
● 2026-03-07 00:27:34
○ 2026-03-07 01:35:38
○ 2026-03-07 04:07:50
● 2026-03-07 09:13:02
● 2026-03-08 07:00:58
○ 2026-03-08 12:49:08
○ 2026-03-08 18:39:48
● 2026-03-09 03:21:18
○ 2026-03-09 07:22:04
○ 2026-03-09 08:58:54
● 2026-03-09 15:07:44
○ 2026-03-10 01:58:16
● 2026-03-10 03:06:06
● 2026-03-11 04:26:26
○ 2026-03-11 06:00:00
○ 2026-03-11 09:43:20
● 2026-03-11 14:53:06
○ 2026-03-12 14:34:38
● 2026-03-12 15:38:18
○ 2026-03-12 19:26:08
● 2026-03-13 02:06:12
○ 2026-03-14 00:22:46
○ 2026-03-14 13:13:14
● 2026-03-14 14:52:10
● 2026-03-15 02:44:52
○ 2026-03-15 18:14:50
● 2026-03-15 19:21:06
● 2026-03-16 19:47:28
○ 2026-03-17 01:14:30
● 2026-03-17 02:48:32
○ 2026-03-17 04:49:00
● 2026-03-17 05:37:40
● 2026-03-17 10:31:52
○ 2026-03-17 20:14:18
● 2026-03-18 02:12:34
● 2026-03-19 01:39:20
○ 2026-03-20 03:18:44
○ 2026-03-20 11:22:16
● 2026-03-20 17:59:08
○ 2026-03-20 22:55:24
○ 2026-03-21 00:36:46
● 2026-03-21 02:29:56
● 2026-03-21 03:24:58
○ 2026-03-22 13:47:00
● 2026-03-22 15:07:50
● 2026-03-24 04:07:44
○ 2026-03-24 13:24:40
● 2026-03-24 17:57:14
● 2026-03-24 19:31:54
○ 2026-03-24 22:03:18
● 2026-03-24 23:34:18
● 2026-03-25 01:08:40
○ 2026-03-25 01:42:26
○ 2026-03-25 05:07:30
● 2026-03-25 11:06:12
● 2026-03-25 13:04:40
○ 2026-03-25 18:14:04
○ 2026-03-25 22:05:28
● 2026-03-26 00:40:18
● 2026-03-26 02:44:56
○ 2026-03-26 03:23:16
○ 2026-03-26 07:49:42
● 2026-03-26 08:59:18
● 2026-03-27 01:53:44
○ 2026-03-27 03:25:40
○ 2026-03-27 03:59:56
● 2026-03-27 07:40:08
● 2026-03-27 08:40:40
○ 2026-03-27 10:32:08
○ 2026-03-27 12:40:14
● 2026-03-27 14:42:36
● 2026-03-27 15:17:08
○ 2026-03-27 16:33:46
● 2026-03-27 17:39:46
○ 2026-03-27 19:25:44
● 2026-03-27 20:58:42
● 2026-03-28 05:22:46
○ 2026-03-28 13:38:40
● 2026-03-28 16:46:08
○ 2026-03-28 17:45:46
○ 2026-03-28 18:16:56
● 2026-03-29 01:54:52
● 2026-03-29 14:35:32

●A13.226.144.692026-02-18 → 2026-03-29 · 118 obs

●A13.226.144.912026-02-18 → 2026-03-29 · 118 obs

●A13.226.144.992026-02-18 → 2026-03-29 · 118 obs

○A13.33.235.1022026-03-24 → 2026-03-27 · 24 obs

○ 2026-03-24 04:07:44
● 2026-03-24 13:24:40
○ 2026-03-24 17:57:14
○ 2026-03-25 01:08:40
● 2026-03-25 01:42:26
○ 2026-03-25 05:07:30
○ 2026-03-25 13:04:40
● 2026-03-25 18:14:04
● 2026-03-25 22:05:28
○ 2026-03-26 00:40:18
○ 2026-03-26 03:23:16
● 2026-03-26 04:34:24
● 2026-03-26 07:49:42
○ 2026-03-26 08:59:18
○ 2026-03-27 08:40:40
● 2026-03-27 10:32:08
● 2026-03-27 12:40:14
○ 2026-03-27 14:42:36
○ 2026-03-27 15:17:08
● 2026-03-27 16:33:46
○ 2026-03-27 17:39:46
● 2026-03-27 19:25:44
○ 2026-03-27 20:58:42
○ 2026-03-29 14:35:32

○A13.33.235.252026-03-24 → 2026-03-27 · 24 obs

○A13.33.235.332026-03-24 → 2026-03-27 · 24 obs

○A13.33.235.52026-03-24 → 2026-03-27 · 24 obs

○A13.33.252.1272026-03-08 → 2026-03-08 · 4 obs

○ 2026-03-08 12:49:08
● 2026-03-08 18:39:48
○ 2026-03-09 03:21:18
○ 2026-03-29 14:35:32

○A13.33.252.172026-03-08 → 2026-03-08 · 4 obs

○ 2026-03-08 12:49:08
● 2026-03-08 18:39:48
○ 2026-03-09 03:21:18
○ 2026-03-29 14:35:32

○A13.33.252.22026-03-08 → 2026-03-08 · 4 obs

○ 2026-03-08 12:49:08
● 2026-03-08 18:39:48
○ 2026-03-09 03:21:18
○ 2026-03-29 14:35:32

○A13.33.252.642026-03-08 → 2026-03-08 · 4 obs

○ 2026-03-08 12:49:08
● 2026-03-08 18:39:48
○ 2026-03-09 03:21:18
○ 2026-03-29 14:35:32

○A18.155.21.372026-03-28 → 2026-03-28 · 5 obs

○ 2026-03-28 16:46:08
● 2026-03-28 17:45:46
● 2026-03-28 18:16:56
○ 2026-03-29 01:54:52
○ 2026-03-29 14:35:32

○A18.155.21.762026-03-28 → 2026-03-28 · 5 obs

○ 2026-03-28 16:46:08
● 2026-03-28 17:45:46
● 2026-03-28 18:16:56
○ 2026-03-29 01:54:52
○ 2026-03-29 14:35:32

○A18.155.21.772026-03-28 → 2026-03-28 · 5 obs

○ 2026-03-28 16:46:08
● 2026-03-28 17:45:46
● 2026-03-28 18:16:56
○ 2026-03-29 01:54:52
○ 2026-03-29 14:35:32

○A18.155.21.902026-03-28 → 2026-03-28 · 5 obs

○ 2026-03-28 16:46:08
● 2026-03-28 17:45:46
● 2026-03-28 18:16:56
○ 2026-03-29 01:54:52
○ 2026-03-29 14:35:32

○A3.171.85.442026-02-20 → 2026-03-28 · 56 obs

○ 2026-02-19 12:14:34
● 2026-02-20 03:25:34
● 2026-02-20 11:01:44
○ 2026-02-20 14:48:14
○ 2026-02-21 15:06:12
● 2026-02-21 16:46:04
○ 2026-02-22 02:43:14
○ 2026-02-23 16:30:22
● 2026-02-23 23:44:50
○ 2026-02-24 01:28:16
○ 2026-02-25 01:30:10
● 2026-02-25 21:56:18
○ 2026-02-26 01:27:58
○ 2026-02-27 01:35:12
● 2026-02-27 14:24:32
○ 2026-02-28 01:27:50
○ 2026-03-02 08:50:26
● 2026-03-03 01:01:10
○ 2026-03-03 11:33:18
○ 2026-03-07 01:35:38
● 2026-03-07 03:16:10
● 2026-03-07 04:07:50
○ 2026-03-07 09:13:02
○ 2026-03-09 03:21:18
● 2026-03-09 07:22:04
○ 2026-03-09 08:58:54
○ 2026-03-13 02:06:12
● 2026-03-14 00:22:46
○ 2026-03-14 01:28:44
○ 2026-03-19 01:39:20
● 2026-03-20 03:18:44
● 2026-03-20 11:22:16
○ 2026-03-20 17:59:08
● 2026-03-20 22:55:24
● 2026-03-21 00:36:46
○ 2026-03-21 02:29:56
○ 2026-03-21 03:24:58
● 2026-03-22 13:47:00
○ 2026-03-22 15:07:50
○ 2026-03-24 19:31:54
● 2026-03-24 22:03:18
○ 2026-03-24 23:34:18
○ 2026-03-25 01:42:26
● 2026-03-25 05:07:30
○ 2026-03-25 11:06:12
○ 2026-03-26 02:44:56
● 2026-03-26 03:23:16
○ 2026-03-26 04:34:24
○ 2026-03-27 01:53:44
● 2026-03-27 03:25:40
● 2026-03-27 03:59:56
○ 2026-03-27 07:40:08
○ 2026-03-28 05:22:46
● 2026-03-28 13:38:40
○ 2026-03-28 16:46:08
○ 2026-03-29 14:35:32

○A3.171.85.452026-02-20 → 2026-03-28 · 56 obs

○A3.171.85.472026-02-20 → 2026-03-28 · 56 obs

○A3.171.85.732026-02-20 → 2026-03-28 · 56 obs

○A99.84.41.1232026-02-18 → 2026-03-17 · 59 obs

● 2026-02-18 17:20:58
○ 2026-02-18 23:08:18
○ 2026-02-20 14:48:14
● 2026-02-20 16:59:10
● 2026-02-21 12:03:18
○ 2026-02-21 15:06:12
○ 2026-02-23 15:13:12
● 2026-02-23 16:30:22
○ 2026-02-23 23:44:50
○ 2026-02-24 17:28:52
● 2026-02-24 21:57:14
○ 2026-02-25 01:30:10
○ 2026-02-26 01:27:58
● 2026-02-26 18:19:04
○ 2026-02-26 21:04:34
○ 2026-03-01 05:49:06
● 2026-03-02 00:56:58
○ 2026-03-02 08:50:26
○ 2026-03-03 11:33:18
● 2026-03-04 23:28:42
○ 2026-03-05 02:45:36
○ 2026-03-05 06:39:36
● 2026-03-05 22:41:36
○ 2026-03-05 23:46:32
○ 2026-03-07 00:27:34
● 2026-03-07 01:35:38
○ 2026-03-07 03:16:10
○ 2026-03-08 07:00:58
● 2026-03-08 12:49:08
○ 2026-03-08 18:39:48
○ 2026-03-09 07:22:04
● 2026-03-09 08:58:54
○ 2026-03-09 15:07:44
● 2026-03-10 01:58:16
○ 2026-03-10 03:06:06
○ 2026-03-11 04:26:26
● 2026-03-11 06:00:00
● 2026-03-11 09:43:20
○ 2026-03-11 14:53:06
● 2026-03-12 14:34:38
○ 2026-03-12 15:38:18
● 2026-03-12 19:26:08
○ 2026-03-13 02:06:12
○ 2026-03-14 00:22:46
● 2026-03-14 01:28:44
● 2026-03-14 13:13:14
○ 2026-03-14 14:52:10
○ 2026-03-15 02:44:52
● 2026-03-15 18:14:50
○ 2026-03-15 19:21:06
○ 2026-03-16 19:47:28
● 2026-03-17 01:14:30
○ 2026-03-17 02:48:32
● 2026-03-17 04:49:00
○ 2026-03-17 05:37:40
○ 2026-03-17 10:31:52
● 2026-03-17 20:14:18
○ 2026-03-18 02:12:34
○ 2026-03-29 14:35:32

○A99.84.41.1292026-02-18 → 2026-03-17 · 59 obs

○A99.84.41.542026-02-18 → 2026-03-17 · 59 obs

○A99.84.41.712026-02-18 → 2026-03-17 · 59 obs

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
ai	v0n0.nic.ai, v0n1.nic.ai, v0n2.nic.ai, v0n3.nic.ai...	-
4fup.ai	ns-1494.awsdns-58.org, ns-289.awsdns-36.com, ns-692.awsdns-22.net, ns-1922.awsdns-48.co.uk	-

✅ Authoritative Response

Server:205.251.193.33

NS records: ns-1494.awsdns-58.org, ns-289.awsdns-36.com, ns-692.awsdns-22.net, ns-1922.awsdns-48.co.uk

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 4fup.ai (unsigned zone)

⏱️ Timing

Total: 1086ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`18.155.21.37, 18.155.21.90...`
NS	4	`ns-1494.awsdns-58.org, ns-1922.awsdns-48.co.uk...`
MX	2	`smtp.secureserver.net (pri: 0), mailstore1.secureserver.net (pri: 10)`
TXT	2	`D8012610, v=spf1 include:secureserver.net -all`
SOA	1	`ns-1494.awsdns-58.org awsdns-hostmaster.`

Analysis

IP Addresses

Four IP numbers are pointed to by 4fup.ai: 13.226.144.19, 13.226.144.69, 13.226.144.91 and 13.226.144.99.

other host names including api.just-eat.es, boom.onelink.me, blazerbasketballcamp.com, gassethabana-piscolabis.just-eat.es and deprecated.technology share IP numbers with 4fup.ai.

Name Servers

4fup.ai is delegated to four name servers: ns-289.awsdns-36.com, ns-692.awsdns-22.net, ns-1494.awsdns-58.org and ns-1922.awsdns-48.co.uk.

4fup.ai at least partially shares name servers with other domains, for instance yamaha-marinestores.net, openagent.com.au, quiltersattic.com, d1gvkjw2n8c5we.cloudfront.net and callssign.com.

These name servers are commonly used with the following name servers: ns1-24-af-south-1.ec2-rdns.amazonaws.com, ns2-24-af-south-1.ec2-rdns.amazonaws.com, ns3-24-af-south-1.ec2-rdns.amazonaws.com, ns4-24-af-south-1.ec2-rdns.amazonaws.com, ns-1269.awsdns-30.org, ns-1021.awsdns-63.net, ns-1184.awsdns-20.org, ns-1941.awsdns-50.co.uk, ns-194.awsdns-24.com and ns-1600.awsdns-08.co.uk.

Host names with two IP numbers:

ns-289.awsdns-36.com points to 2600:9000:5301:2100::1 and 205.251.193.33; ns-692.awsdns-22.net points to 2600:9000:5302:b400::1 and 205.251.194.180; ns-1494.awsdns-58.org points to 2600:9000:5305:d600::1 and 205.251.197.214; ns-1922.awsdns-48.co.uk points to 2600:9000:5307:8200::1 and 205.251.199.130.

Mail Servers

Two mail servers handle 4fup.ai: mailstore1.secureserver.net and smtp.secureserver.net.

4fup.ai shares the same mail server setup as other domains, for instance thisisoxford.com, michel-lambert.de, exciteengageempower.com, flukevsa.com and bbott.co.uk.

Host names with three IPs:

mailstore1.secureserver.net points to 216.69.141.78, 216.69.141.114 and 216.69.141.162.

smtp.secureserver.net points to 216.69.141.71, 216.69.141.84 and 216.69.141.113.

4fup.ai - robtex.com

4fup.ai

ai

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

Mail Servers

`4fup.ai`

`ai`