AS216129 SEBEK sp. z o.o — IPv4 Prefixes

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

53/100

Caution

How this score is built

Baseline (neutral) 65
Multiple-origin (MOAS) routing anomaly −12
Trust score 53 / 100

Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →

⚠ 1 MOAS prefix — multiple origin ASNs detected

All MOAS anomalies →

A previously stable prefix originated by AS216129 is now also announced by another ASN (MOAS — Multiple-Origin AS), detected from our RIPE RIS collectors. Often benign (anycast, multi-homing, or a recent transfer) — but it can signal a route leak or prefix hijack, so it's worth inspecting.

Prefix	Origin ASNs	Last detected (UTC)
31.57.117.0/24	AS213633, AS216129	2026-07-22 23:23:24

Top CIDR ranges

CIDR	IPs	PTR Density	Organization	Country	State	City
148.253.208.0/21	2.0K	63.1%	SEBEK sp. z o.o	PL	—	—
148.253.208.0/23	512	0.0%	SEBEK sp. z o.o	DE	Hesse	Frankfurt am Main
2.27.253.0/24	256	93.8%	SEBEK sp. z o.o	US	—	—
31.56.180.0/24	256	74.2%	SEBEK sp. z o.o	AE	—	—
31.57.13.0/24	256	34.8%	Agiliza Solutions SL	AE	—	—
31.57.117.0/24	256	0.8%	SEBEK sp. z o.o	AE	—	—
31.58.85.0/24	256	88.3%	SEBEK sp. z o.o	AE	—	—
31.77.241.0/24	256	86.7%	SEBEK sp. z o.o	US	—	—
104.234.24.0/24	256	9.4%	SEBEK sp. z o.o	CA	—	—
107.161.154.0/24	256	65.2%	SEBEK sp. z o.o	PL	—	—
143.20.155.0/24	256	0.0%	SEBEK sp. z o.o	US	—	—
148.253.210.0/24	256	0.0%	SEBEK sp. z o.o	DE	Hesse	Frankfurt am Main
148.253.211.0/24	256	0.0%	SEBEK sp. z o.o	SE	Stockholm County	Stockholm
148.253.212.0/24	256	0.0%	SEBEK sp. z o.o	PL	Mazovia	Warsaw
148.253.213.0/24	256	0.0%	SEBEK sp. z o.o	NL	North Holland	Amsterdam
148.253.214.0/24	256	0.0%	SEBEK sp. z o.o	BG	—	—
148.253.215.0/24	256	0.0%	SEBEK sp. z o.o	DE	Hesse	Frankfurt am Main
185.28.84.0/24	256	76.6%	SEBEK sp. z o.o	PL	—	—
188.220.148.0/24	256	9.8%	SEBEK sp. z o.o	GB	—	—
188.220.205.0/24	256	29.3%	SEBEK sp. z o.o	GB	—	—
199.83.103.0/24	256	62.1%	SEBEK sp. z o.o	PL	—	—
202.181.188.0/24	256	84.8%	SEBEK sp. z o.o	PL	—	—

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS216129 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

Prefix	Announcement samples	Last seen
148.253.214.0/24	17,434	2026-07-23 15:08:24
199.83.103.0/24	13,296	2026-07-23 15:48:30
31.77.241.0/24	12,933	2026-07-23 15:45:45
202.181.188.0/24	12,658	2026-07-23 15:48:34
31.58.85.0/24	12,593	2026-07-23 15:45:45
107.161.154.0/24	12,589	2026-07-23 15:48:32
185.28.84.0/24	12,491	2026-07-23 15:45:45
148.253.210.0/24	12,470	2026-07-23 15:45:45
148.253.208.0/24	12,424	2026-07-23 15:45:45
148.253.209.0/24	12,385	2026-07-23 15:45:45
188.220.148.0/24	11,411	2026-07-23 15:45:45
31.56.180.0/24	9,796	2026-07-23 15:45:04
148.253.213.0/24	9,436	2026-07-23 15:45:04
2.27.253.0/24	9,429	2026-07-23 15:46:25
148.253.212.0/24	7,252	2026-07-23 15:33:44
31.57.13.0/24	5,646	2026-07-23 15:48:06
148.253.215.0/24	5,222	2026-07-23 15:48:07
104.234.24.0/24	5,110	2026-07-23 15:33:44
143.20.155.0/24	4,853	2026-07-23 15:46:06
148.253.211.0/24	4,720	2026-07-23 15:45:01
150.251.228.0/24	4,543	2026-07-13 06:46:15
188.220.205.0/24	2,667	2026-07-23 15:47:10
31.57.117.0/24	878	2026-07-23 15:08:31

Frequently Asked Questions

What is AS216129?

AS216129 is an Autonomous System Number assigned to SEBEK sp. z o.o. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).

How many IP addresses does AS216129 announce?

AS216129 announces 5.6K IPv4 addresses distributed across 15 routed CIDR prefixes. The network is registered in Germany.

Who operates AS216129?

AS216129 is operated by SEBEK sp. z o.o. The organization is based in Germany. You can view all IP ranges and related ASNs on the organization page.

What country is AS216129 registered in?

AS216129 is registered in Germany. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.