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Autonomous System

AS15576

NTS workspace AG

Announced IPs
46,848
CIDR prefixes
41
ASN
AS15576

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

Experimental · trust-vectors model v1.2.0 — 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 AS15576 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.

PrefixOrigin ASNsLast detected (UTC)
0.0.0.0/0 AS15576, AS212271 2026-09-11 00:55:49

Network profile

Source: PeeringDB →
Network type NSP
Traffic level 20-50Gbps
Geographic scope Regional
Traffic ratio Balanced
Peering policy Selective
IRR record RIPE::AS15576:AS-NTS

Present at 6 internet exchanges: SwissIX: Peering, AMS-IX, RomandIX: Romandix Lan, CIXP, VIX, BIX

AS15576 — global IP footprint

Cities where AS15576 has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.

View on 3D globe →

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
212.103.64.0/19 8.2K
23.8%
NTS workspace AG CH Bern Bern
217.11.208.0/20 4.1K
39.3%
NTS workspace AG CH Aargau Eiken
217.68.224.0/20 4.1K
0.5%
NTS workspace AG CH
217.146.160.0/20 4.1K
3.9%
NTS workspace AG CH Zurich Adliswil
77.95.120.0/21 2.0K
17.6%
NTS workspace AG CH
85.118.216.0/21 2.0K
0.0%
NTS workspace AG CH
87.237.168.0/21 2.0K
96.0%
NTS workspace AG CH Bern Wilderswil
94.126.248.0/21 2.0K
69.1%
NTS workspace AG CH Bern Hünibach
188.92.224.0/21 2.0K
12.1%
NTS workspace AG CH
217.197.128.0/21 2.0K
40.1%
NTS workspace AG CH
87.237.172.0/22 1.0K
98.9%
NTS workspace AG CH Aargau Stetten
88.214.4.0/22 1.0K
0.0%
NTS workspace AG CH
185.63.148.0/22 1.0K
0.0%
NTS workspace AG CH
185.75.152.0/22 1.0K
1.2%
NTS workspace AG CH Zug Baar
185.79.200.0/22 1.0K
0.1%
NTS workspace AG CH
185.98.152.0/22 1.0K
5.9%
NTS workspace AG CH
185.218.240.0/22 1.0K
0.3%
NTS workspace AG CH
185.254.76.0/22 1.0K
25.0%
NTS workspace AG CH
193.138.212.0/22 1.0K
5.4%
NTS workspace AG CH
94.176.192.0/23 512
1.0%
NTS workspace AG CH
185.187.120.0/23 512
1.0%
NTS workspace AG CH Bern Zollikofen
185.253.192.0/23 512
2.3%
NTS workspace AG CH Bern Köniz
195.189.252.0/23 512
4.9%
NTS workspace AG CH
203.56.114.0/23 512
99.6%
NTS workspace AG CH
91.198.79.0/24 256
4.7%
NTS workspace AG CH
91.199.198.0/24 256
3.1%
NTS workspace AG CH
185.63.148.0/24 256
0.4%
NTS workspace AG CH
193.8.77.0/24 256
0.0%
NTS workspace AG CH
193.17.76.0/24 256
20.3%
NTS workspace AG CH
193.43.27.0/24 256
4.7%
NTS workspace AG CH
193.43.183.0/24 256
6.3%
NTS workspace AG CH
193.47.103.0/24 256
0.4%
NTS workspace AG CH
193.47.190.0/24 256
5.1%
NTS workspace AG CH
193.104.116.0/24 256
0.4%
NTS workspace AG CH
193.200.157.0/24 256
3.5%
NTS workspace AG CH
193.222.138.0/24 256
37.9%
NTS workspace AG CH
194.11.160.0/24 256
0.0%
NTS workspace AG CH
194.153.94.0/24 256
3.1%
NTS workspace AG CH
194.176.116.0/24 256
5.9%
NTS workspace AG CH
195.137.172.0/24 256
21.5%
NTS workspace AG CH
195.216.227.0/24 256
7.0%
NTS workspace AG CH
203.56.115.0/24 256
0.0%
NTS workspace AG CH

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS15576 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
195.216.227.0/24 503,856 2026-09-11 00:48:35
193.138.212.0/22 503,791 2026-09-11 00:48:35
217.146.160.0/20 502,459 2026-09-11 00:48:35
217.197.128.0/21 499,847 2026-09-11 00:48:35
185.75.152.0/22 238,984 2026-09-11 00:48:27
185.79.202.0/23 236,431 2026-09-11 00:48:27
195.137.172.0/24 235,772 2026-09-11 00:48:27
193.222.138.0/24 234,614 2026-09-11 00:48:27
185.187.120.0/23 233,982 2026-09-11 00:48:27
88.214.4.0/22 230,813 2026-09-11 00:48:27
217.68.224.0/20 229,478 2026-09-11 00:48:27
185.218.240.0/22 228,940 2026-09-11 00:48:27
193.43.27.0/24 225,031 2026-09-11 00:48:27
94.176.192.0/23 223,589 2026-09-11 00:48:27
193.104.116.0/24 222,250 2026-09-11 00:48:27
185.79.200.0/23 210,965 2026-09-11 00:48:27
195.189.252.0/23 210,172 2026-09-11 00:48:27
188.92.224.0/21 206,617 2026-09-11 00:48:27
185.254.76.0/22 205,513 2026-09-11 00:48:27
193.47.103.0/24 204,362 2026-09-11 00:48:27
91.199.198.0/24 202,243 2026-09-11 00:48:27
193.43.183.0/24 190,216 2026-09-11 00:48:27
185.253.192.0/23 181,095 2026-09-11 00:48:27
185.63.148.0/24 166,447 2026-09-11 00:48:27
194.176.116.0/24 162,395 2026-09-11 00:48:27
193.47.190.0/24 155,867 2026-09-11 00:48:27
91.198.79.0/24 153,033 2026-09-11 00:48:27
193.17.76.0/24 147,062 2026-09-11 00:48:27
193.200.157.0/24 140,824 2026-09-11 00:48:27
185.98.152.0/22 139,315 2026-09-11 00:48:27
194.153.94.0/24 135,470 2026-09-11 00:48:27
203.56.114.0/23 128,186 2026-09-11 00:48:27
193.8.77.0/24 115,504 2026-07-30 09:34:55
77.95.120.0/21 60,810 2026-09-11 00:21:16
87.237.168.0/22 54,689 2026-09-11 00:21:16
217.11.208.0/20 51,752 2026-09-11 00:23:50
212.103.64.0/19 50,657 2026-09-11 00:23:25
85.118.216.0/21 45,917 2026-09-11 00:21:16
87.237.172.0/22 44,379 2026-09-11 00:21:16
94.126.248.0/21 43,098 2026-09-11 00:21:23
212.103.64.0/24 11,247 2026-09-11 00:49:20
194.11.160.0/24 10,975 2026-09-11 00:23:25
185.63.149.0/24 293 2026-09-11 00:49:59
185.63.150.0/23 291 2026-09-11 00:49:59
91.198.229.9/32 64 2026-07-14 03:00:04
212.103.89.211/32 9 2026-07-08 21:09:53
91.198.229.128/32 7 2026-06-04 12:18:11
217.11.217.147/32 6 2026-07-08 21:09:53
0.0.0.0/0 2 2026-07-28 23:40:57

Frequently Asked Questions

What is AS15576?

AS15576 is an Autonomous System Number assigned to NTS workspace AG. 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 AS15576 announce?

AS15576 announces 46.8K IPv4 addresses distributed across 41 routed CIDR prefixes. The network is registered in Switzerland.

Who operates AS15576?

AS15576 is operated by NTS workspace AG. The organization is based in Switzerland. You can view all IP ranges and related ASNs on the organization page.

What country is AS15576 registered in?

AS15576 is registered in Switzerland. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-09-11 00:54:05 UTC
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