IP address

Search at other sites:

.001104.156.133.21

Shodan(more info)

Passive DNS

IP blacklists

blocklist.de IMAP

104.156.133.21 was recently listed on the blocklist.de IMAP blacklist, but currently it is not.

Description: Blocklist.de feed is a free and voluntary service<br>provided by a Fraud/Abuse-specialist. IPs performing attacks<br>on the Service imap, sasl, pop3.
Type of feed: primary (feed detail page)

Last checked at: 2026-09-28 16:05:00.296000
Was present on blacklist at: 2026-09-26 22:05, 2026-09-27 04:05, 2026-09-27 10:05, 2026-09-27 16:05, 2026-09-27 22:05, 2026-09-28 04:05, 2026-09-28 10:05, 2026-09-28 16:05

blocklist.de mail

104.156.133.21 was recently listed on the blocklist.de mail blacklist, but currently it is not.

Description: Blocklist.de feed is a free and voluntary service provided<br>by a Fraud/Abuse-specialist. IPs performing Mail attacks.
Type of feed: primary (feed detail page)

Last checked at: 2026-09-28 16:05:00.469000
Was present on blacklist at: 2026-09-26 22:05, 2026-09-27 04:05, 2026-09-27 10:05, 2026-09-27 16:05, 2026-09-27 22:05, 2026-09-28 04:05, 2026-09-28 10:05, 2026-09-28 16:05

Threat categories

TL	Role	Category	Details
46	src	—
25	src	login	port: 25, 465, 587

---

Warden events (1)

2026-09-24

AttemptLogin (node.ce2b59): 1

Origin AS

AS9009 - M247

BGP Prefix

104.156.133.0/24

geo

United States

🕑 America/Chicago

hostname

(null)

Address block ('inetnum' or 'NetRange' in whois database)

104.156.132.0 - 104.156.135.255

last_activity

2026-09-24 03:06:58

last_warden_event

2026-09-24 03:06:58

rep

0.0014944139171879645

reserved_range

0

Shodan's InternetDB

Open ports: 6443, 8443

Tags: –

CPEs: –

ts_added

2026-09-24 03:19:51.048000

ts_last_update

2026-09-30 03:20:00.296000

Warden event timeline

DShield event timeline

Presence on blacklists