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Autonomous System

AS7054

Merck and Co., Inc.

Announced IPs
65,280
CIDR prefixes
31
ASN
AS7054

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.

65/100
Moderate
How this score is built

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

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
155.91.128.0/17 32.8K
0.0%
Merck and Co., Inc. US
155.91.0.0/18 16.4K
1.5%
Merck and Co., Inc. US Pennsylvania Lansdale
155.91.192.0/18 16.4K
0.0%
US
155.91.96.0/19 8.2K
0.0%
Merck and Co., Inc. US
155.91.160.0/19 8.2K
0.0%
US
155.91.80.0/20 4.1K
0.0%
Merck and Co., Inc. US
155.91.128.0/20 4.1K
0.0%
US
155.91.8.0/21 2.0K
0.0%
Merck and Co., Inc. US
155.91.64.0/21 2.0K
0.0%
Merck and Co., Inc. US
155.91.144.0/21 2.0K
0.0%
US
155.91.152.0/21 2.0K
0.0%
Merck and Co., Inc. US
155.91.160.0/21 2.0K
0.0%
Merck and Co., Inc. US
155.91.56.0/22 1.0K
0.0%
Merck and Co., Inc. US
155.91.76.0/22 1.0K
0.0%
Merck and Co., Inc. US
155.91.152.0/22 1.0K
0.0%
SG
155.91.156.0/22 1.0K
0.0%
US
155.91.16.0/23 512
0.0%
Merck and Co., Inc. US
155.91.26.0/23 512
7.6%
Merck and Co., Inc. US
155.91.28.0/23 512
0.0%
Merck and Co., Inc. US
155.91.34.0/23 512
13.7%
Merck and Co., Inc. US
155.91.38.0/23 512
14.3%
Merck and Co., Inc. US
155.91.40.0/23 512
2.1%
Merck and Co., Inc. US
155.91.44.0/23 512
0.6%
Merck and Co., Inc. US
155.91.52.0/23 512
0.0%
Merck and Co., Inc. US
155.91.72.0/23 512
0.0%
Merck and Co., Inc. US
155.91.74.0/23 512
0.0%
US
155.91.7.0/24 256
0.0%
Merck and Co., Inc. US
155.91.18.0/24 256
0.0%
Merck and Co., Inc. US
155.91.20.0/24 256
0.0%
Merck and Co., Inc. US
155.91.31.0/24 256
2.3%
Merck and Co., Inc. US
155.91.37.0/24 256
5.5%
Merck and Co., Inc. US
155.91.42.0/24 256
0.0%
Merck and Co., Inc. US
155.91.47.0/24 256
0.0%
Merck and Co., Inc. US
155.91.49.0/24 256
0.0%
Merck and Co., Inc. US
155.91.50.0/24 256
0.0%
Merck and Co., Inc. US
155.91.60.0/24 256
0.0%
Merck and Co., Inc. US
155.91.62.0/24 256
0.0%
Merck and Co., Inc. US
155.91.72.0/24 256
0.0%
NL
155.91.73.0/24 256
0.0%
US
155.91.74.0/24 256
0.0%
Merck and Co., Inc. US
155.91.76.0/24 256
0.0%
IE
155.91.77.0/24 256
0.0%
NL
155.91.78.0/24 256
0.0%
NL
155.91.79.0/24 256
0.0%
US

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS7054 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
155.91.7.0/24 7,505 2026-07-19 14:28:08
155.91.11.0/24 7,497 2026-07-19 14:28:08
155.91.57.0/24 7,494 2026-07-19 14:28:08
155.91.47.0/24 7,490 2026-07-19 14:28:08
155.91.59.0/24 7,487 2026-07-19 14:28:08
155.91.41.0/24 7,470 2026-07-19 14:28:08
155.91.42.0/24 7,467 2026-07-19 14:28:08
155.91.16.0/24 7,459 2026-07-19 14:28:08
155.91.26.0/24 7,458 2026-07-19 14:28:08
155.91.38.0/24 7,451 2026-07-19 14:28:08
155.91.10.0/24 7,447 2026-07-19 14:28:08
155.91.50.0/24 7,444 2026-07-19 14:28:08
155.91.49.0/24 7,442 2026-07-19 14:28:08
155.91.53.0/24 7,440 2026-07-19 14:28:08
155.91.34.0/24 7,437 2026-07-19 14:28:08
155.91.39.0/24 7,437 2026-07-19 14:28:08
155.91.44.0/24 7,436 2026-07-19 14:28:08
155.91.35.0/24 7,436 2026-07-19 14:28:08
155.91.15.0/24 7,433 2026-07-19 14:28:08
155.91.40.0/24 7,430 2026-07-19 14:28:08
155.91.45.0/24 7,418 2026-07-19 14:28:08
155.91.0.0/16 6,900 2026-07-19 14:28:08
155.91.28.0/24 5,670 2026-07-19 14:28:08
155.91.14.0/24 5,657 2026-07-19 14:28:08
155.91.56.0/24 5,657 2026-07-19 14:28:08
155.91.58.0/24 5,657 2026-07-19 14:28:08
155.91.31.0/24 5,655 2026-07-19 14:28:08
155.91.27.0/24 5,653 2026-07-19 14:28:08
155.91.17.0/24 5,652 2026-07-19 14:28:08
155.91.29.0/24 5,651 2026-07-19 14:28:08
155.91.60.0/24 5,649 2026-07-19 14:28:08
155.91.52.0/24 5,645 2026-07-19 14:28:08
155.91.20.0/24 5,645 2026-07-19 14:28:08
155.91.37.0/24 5,641 2026-07-19 14:28:08
155.91.18.0/24 5,555 2026-07-19 14:28:08
155.91.152.0/22 4,510 2026-07-19 14:28:08
155.91.152.0/21 4,475 2026-07-19 14:28:08
155.91.72.0/22 3,289 2026-07-19 14:28:08
155.91.72.0/21 3,182 2026-07-19 14:28:08
155.91.12.0/23 3,161 2026-07-19 14:28:08
155.91.8.0/22 3,144 2026-07-19 14:28:08
155.91.62.0/24 3,052 2026-07-19 14:28:08
155.91.160.0/21 2,067 2026-06-02 10:17:45
155.91.160.0/22 2,065 2026-06-02 10:17:45

Frequently Asked Questions

What is AS7054?

AS7054 is an Autonomous System Number assigned to Merck and Co., Inc.. 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 AS7054 announce?

AS7054 announces 65.3K IPv4 addresses distributed across 31 routed CIDR prefixes. The network is registered in United States.

Who operates AS7054?

AS7054 is operated by Merck and Co., Inc.. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS7054 registered in?

AS7054 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-07-19 15:40:31 UTC
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