155.91.72.0/21

AS7054 · Merck and Co., Inc.

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Summary

Country	United States
Domain	merck.com
ASN	AS7054
Parent Range	155.91.0.0/16
Registry	ARIN
ID	MERCK1

WHOIS Details

NetHandle:      NET-155-91-0-0-1
OrgID:          MERCKA
Parent:         NET-155-0-0-0-0
NetName:        MERCK1
NetRange:       155.91.0.0 - 155.91.255.255
NetType:        allocation
RegDate:        1991-10-31
Updated:        2021-12-14
TechHandle:     AS213-ARIN
Source:         ARIN


OrgID:          MERCKA
OrgName:        Merck and Co., Inc.
CanAllocate:    
Street:         126 East Lincoln Avenue
City:           Rahway
State/Prov:     NJ
Country:        US
PostalCode:     07065
RegDate:        1992-03-17
Updated:        2025-05-06
OrgAdminHandle: WHITE7-ARIN
OrgTechHandle:  WHITE7-ARIN
OrgAbuseHandle: WHITE7-ARIN
OrgNOCHandle:   WHITE7-ARIN
Source:         ARIN


POCHandle:      AS213-ARIN
IsRole:         N
LastName:       Starks
FirstName:      Anthony
Street:         1 Merck Drive
City:           Whitehouse Station
State/Prov:     NJ
Country:        US
PostalCode:     08889
RegDate:        1970-01-01
Updated:        2005-06-01
OfficePhone:    +1-908-423-1000
Mailbox:        [email protected]
Source:         ARIN


POCHandle:      WHITE7-ARIN
IsRole:         Y
LastName:       Whitehouse Telecom
FirstName:      
Street:         126 East Lincoln Ave
Street:         Rahway, NJ 07065
Street:         United States
City:           Rahway
State/Prov:     NJ
Country:        US
PostalCode:     07065
RegDate:        2005-11-11
Updated:        2025-11-05
OfficePhone:    +1-908-423-2900
Mailbox:        [email protected]
Mailbox:        [email protected]
Mailbox:        [email protected]
Source:         ARIN

Overlapping Ranges

BGP prefixes that contain 155.91.72.0/21

Range	ASN	Company	Num of IPs
155.91.0.0/16	AS7054	Merck and Co., Inc.	65,536

Nearby Ranges

BGP prefixes that overlap with 155.91.0.0/16

Range	ASN	Company	Num of IPs
155.91.0.0/16	AS7054	Merck and Co., Inc.	65,536

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

27 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
155.91.72.8	AS7054 Merck and Co., Inc.	`0.72ms` from Amsterdam, NL
155.91.77.254	AS7054 Merck and Co., Inc.	`1.07ms` from Amsterdam, NL
155.91.78.10	AS7054 Merck and Co., Inc.	`1.03ms` from Amsterdam, NL

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address	ASN	Details
172.211.201.5	AS8075 Microsoft Corporation	`0.20ms` from Amsterdam, NL
196.70.34.149	AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM	`2.40ms` from Casablanca, MA
108.203.68.165	AS7018 AT&T Enterprises, LLC	`1.86ms` from Chicago, US
183.230.66.5	AS9808 China Mobile Communications Group Co., Ltd.	`1.99ms` from Chongqing, CN
96.70.79.229	AS7922 Comcast Cable Communications, LLC	`8.96ms` from Detroit, US
91.20.247.101	AS3320 Deutsche Telekom AG	`4.18ms` from Frankfurt am Main, DE
58.18.88.5	AS4837 CHINA UNICOM China169 Backbone	`11.86ms` from Hohhot, CN
120.157.217.85	AS1221 Telstra Limited	`12.17ms` from Melbourne, AU
188.219.202.5	AS30722 Vodafone Italia S.p.A.	`3.15ms` from Milan, IT
117.141.22.229	AS9808 China Mobile Communications Group Co., Ltd.	`11.59ms` from Nanning, CN
211.125.219.69	AS7524 ITEC HANKYU HANSHIN CO.,LTD.	`1.40ms` from Osaka, JP
189.79.193.133	AS27699 TELEFÔNICA BRASIL S.A	`1.77ms` from Osasco, BR
187.94.120.213	AS28658 Gigalink de Nova Friburgo Soluções em Rede Multimi	`3.97ms` from Rio de Janeiro, BR
46.217.224.117	AS6821 Makedonski Telekom AD-Skopje	`6.41ms` from Skopje, MK
159.143.123.229	AS8011 MongoDB, Inc.	`0.09ms` from Sydney, AU
101.39.62.117	AS4847 China Networks Inter-Exchange	`4.39ms` from Beijing, CN
196.218.154.101	AS8452 TE-AS	`8.94ms` from Cairo, EG
174.46.40.229	AS3549 Level 3 Parent, LLC	`0.94ms` from Dallas, US
162.40.157.85	AS7029 Windstream Communications LLC	`18.68ms` from Dallas, US
220.160.107.37	AS4134 CHINANET-BACKBONE	`11.93ms` from Guangzhou, CN
193.229.1.21	AS719 Elisa Oyj	`3.17ms` from Helsinki, FI
14.225.211.69	AS135905 VIETNAM POSTS AND TELECOMMUNICATIONS GROUP	`0.33ms` from Ho Chi Minh City, VN
120.192.163.149	AS24444 Shandong Mobile Communication Company Limited	`8.29ms` from Jinan, CN
217.192.241.229	AS3303 Swisscom (Switzerland) Ltd	`0.64ms` from Lausanne, CH
89.212.214.69	AS34779 T-2, d.o.o.	`2.44ms` from Ljubljana, SI

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

traceroute -a -n -q1 -f3 -m7 155.91.76.5

traceroute to 155.91.76.5 (155.91.76.5): 7 hops max, 52 byte packets

3 [AS3356] 213.19.223.178 3.556 ms

4 [AS7054] 155.91.72.9 3.567 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Amsterdam, NL

On January 18th 2026

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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