Data as of Nov 6, 2026

141.212.0.0/16

No anonymizer space · no proxy exits in 30 days

University of Michigan

Announcement

this exact prefix

RPKI valid

Announced by

AS36375

Type

Business

Risk

0 / 100 · Low

Registrations in this block

The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.

Range	Addresses	Netname	Holder	Type	Created	Abuse contact
141.212.0.0/16	65,536	UMICH-2	University of Michigan (UNIVER-118-Z) · US	Direct Allocation	Aug 2, 1990	report-abuse@umich.edu
└ 141.212.3.0/26	64	UMICH-51770	unknown	—	—	—
└ 141.212.3.64/26	64	UMICH-51771	unknown	—	—	—
└ 141.212.3.128/27	32	UMICH-57146	unknown	—	—	—
└ 141.212.3.160/27	32	UMICH-58431	unknown	—	—	—
└ 141.212.3.192/26	64	UMICH-59075	unknown	—	—	—
└ 141.212.4.0/28	16	UMICH-20712	unknown	—	—	—
└ 141.212.4.32/27	32	UMICH-66866	unknown	—	—	—
└ 141.212.11.0/24	256	UMICH-20730	unknown	—	—	—
└ 141.212.15.0/24	256	UMICH-47134	unknown	—	—	—
└ 141.212.16.0/25	128	UMICH-20715	unknown	—	—	—
└ 141.212.16.128/25	128	UMICH-47136	unknown	—	—	—
└ 141.212.17.0/25	128	UMICH-42137	unknown	—	—	—
└ 141.212.17.128/25	128	UMICH-47137	unknown	—	—	—
└ 141.212.18.0/25	128	UMICH-42135	unknown	—	—	—
└ 141.212.18.128/26	64	UMICH-47138	unknown	—	—	—
└ 141.212.18.192/26	64	UMICH-47139	unknown	—	—	—
└ 141.212.19.0/26	64	UMICH-42138	unknown	—	—	—
└ 141.212.19.64/26	64	UMICH-47140	unknown	—	—	—
└ 141.212.19.128/26	64	UMICH-47141	unknown	—	—	—
└ 141.212.19.192/26	64	UMICH-47142	unknown	—	—	—
└ 141.212.20.0/24	256	UMICH-20716	unknown	—	—	—
└ 141.212.21.0/26	64	UMICH-20731	unknown	—	—	—
└ 141.212.21.64/27	32	UMICH-47841	unknown	—	—	—
└ 141.212.21.96/27	32	UMICH-47842	unknown	—	—	—
└ 141.212.21.128/27	32	UMICH-47843	unknown	—	—	—
└ 141.212.21.160/28	16	UMICH-47844	unknown	—	—	—
└ 141.212.21.176/28	16	UMICH-47847	unknown	—	—	—
└ 141.212.21.192/27	32	UMICH-47845	unknown	—	—	—
└ 141.212.21.224/27	32	UMICH-48204	unknown	—	—	—
└ 141.212.22.0/24	256	UMICH-20732	unknown	—	—	—
└ 141.212.23.0/24	256	UMICH-20733	unknown	—	—	—
└ 141.212.24.0/24	256	UMICH-20717	unknown	—	—	—
└ 141.212.25.0/24	256	UMICH-20735	unknown	—	—	—
└ 141.212.32.0/24	256	UMICH-20719	unknown	—	—	—
└ 141.212.33.0/26	64	UMICH-20738	unknown	—	—	—
└ 141.212.33.64/26	64	UMICH-32120	unknown	—	—	—
└ 141.212.33.136/29	8	UMICH-35697	unknown	—	—	—
└ 141.212.36.0/24	256	UMICH-20720	unknown	—	—	—
└ 141.212.37.0/24	256	UMICH-20925	unknown	—	—	—
└ 141.212.38.0/23	512	UMICH-20926	unknown	—	—	—
└ 141.212.43.0/25	128	UMICH-23973	unknown	—	—	—
└ 141.212.44.0/24	256	UMICH-20722	unknown	—	—	—
└ 141.212.45.0/24	256	UMICH-20929	unknown	—	—	—
└ 141.212.48.0/24	256	UMICH-20723	unknown	—	—	—
└ 141.212.50.0/24	256	UMICH-27322	unknown	—	—	—
└ 141.212.52.0/24	256	UMICH-27324	unknown	—	—	—
└ 141.212.54.0/24	256	UMICH-59607	unknown	—	—	—
└ 141.212.65.0/25	128	UMICH-37795	unknown	—	—	—
└ 141.212.66.0/26	64	UMICH-37796	unknown	—	—	—
└ 141.212.71.160/27	32	UMICH-37829	unknown	—	—	—
└ 141.212.71.192/27	32	UMICH-37830	unknown	—	—	—
└ 141.212.72.32/27	32	UMICH-20959	unknown	—	—	—
└ 141.212.74.0/27	32	UMICH-20940	unknown	—	—	—
└ 141.212.74.32/27	32	UMICH-59620	unknown	—	—	—
└ 141.212.74.64/27	32	UMICH-59613	unknown	—	—	—
└ 141.212.74.128/27	32	UMICH-59614	unknown	—	—	—
└ 141.212.75.0/26	64	UMICH-59616	unknown	—	—	—
└ 141.212.75.64/26	64	UMICH-59617	unknown	—	—	—
└ 141.212.75.128/26	64	UMICH-59618	unknown	—	—	—
└ 141.212.75.192/26	64	UMICH-59619	unknown	—	—	—
└ 141.212.76.0/26	64	UMICH-20941	unknown	—	—	—
└ 141.212.76.128/25	128	UMICH-59622	unknown	—	—	—
└ 141.212.77.0/25	128	UMICH-59611	unknown	—	—	—
└ 141.212.77.128/25	128	UMICH-59612	unknown	—	—	—
└ 141.212.78.0/25	128	UMICH-20942	unknown	—	—	—
└ 141.212.78.128/25	128	UMICH-59638	unknown	—	—	—
└ 141.212.79.0/26	64	UMICH-58537	unknown	—	—	—
└ 141.212.80.0/25	128	UMICH-20943	unknown	—	—	—
└ 141.212.81.0/25	128	UMICH-20962	unknown	—	—	—
└ 141.212.82.0/25	128	UMICH-20944	unknown	—	—	—
└ 141.212.82.128/25	128	UMICH-59639	unknown	—	—	—
└ 141.212.83.0/25	128	UMICH-59609	unknown	—	—	—
└ 141.212.83.128/25	128	UMICH-59610	unknown	—	—	—
└ 141.212.84.0/25	128	UMICH-20945	unknown	—	—	—
└ 141.212.84.128/25	128	UMICH-59635	unknown	—	—	—
└ 141.212.85.0/26	64	UMICH-59636	unknown	—	—	—
└ 141.212.89.0/24	256	UMICH-20966	unknown	—	—	—
└ 141.212.90.0/24	256	UMICH-20967	unknown	—	—	—
└ 141.212.92.128/25	128	UMICH-23015	unknown	—	—	—
└ 141.212.96.0/26	64	UMICH-10097	unknown	—	—	—
└ 141.212.97.0/24	256	UMICH-20979	unknown	—	—	—
└ 141.212.98.0/24	256	UMICH-744	unknown	—	—	—
└ 141.212.99.0/26	64	UMICH-20993	unknown	—	—	—
└ 141.212.99.64/26	64	UMICH-39505	unknown	—	—	—
└ 141.212.99.128/26	64	UMICH-39506	unknown	—	—	—
└ 141.212.104.0/25	128	UMICH-10107	unknown	—	—	—
└ 141.212.104.128/25	128	UMICH-29003	unknown	—	—	—
└ 141.212.105.0/24	256	UMICH-20999	unknown	—	—	—
└ 141.212.106.0/24	256	UMICH-21000	unknown	—	—	—
└ 141.212.107.0/24	256	UMICH-21001	unknown	—	—	—
└ 141.212.108.0/24	256	UMICH-21002	unknown	—	—	—
└ 141.212.109.0/24	256	UMICH-21003	unknown	—	—	—
└ 141.212.110.0/24	256	UMICH-21004	unknown	—	—	—
└ 141.212.111.0/24	256	UMICH-21005	unknown	—	—	—
└ 141.212.112.0/24	256	UMICH-10108	unknown	—	—	—
└ 141.212.113.0/24	256	UMICH-21017	unknown	—	—	—
└ 141.212.114.0/24	256	UMICH-21018	unknown	—	—	—
└ 141.212.115.0/24	256	UMICH-21019	unknown	—	—	—
└ 141.212.117.0/24	256	UMICH-21021	unknown	—	—	—
└ 141.212.118.0/24	256	UMICH-21022	unknown	—	—	—
└ 141.212.119.192/26	64	UMICH-50328	unknown	—	—	—
└ 141.212.120.0/24	256	UMICH-10109	unknown	—	—	—
└ 141.212.121.0/24	256	UMICH-21024	unknown	—	—	—
└ 141.212.122.0/24	256	UMICH-21025	unknown	—	—	—
└ 141.212.123.0/24	256	UMICH-21026	unknown	—	—	—
└ 141.212.124.0/23	512	UMICH-10098	unknown	—	—	—
└ 141.212.126.0/23	512	UMICH-21027	unknown	—	—	—
└ 141.212.129.0/24	256	UMICH-21038	unknown	—	—	—
└ 141.212.130.0/23	512	UMICH-21031	unknown	—	—	—
└ 141.212.132.0/23	512	UMICH-21032	unknown	—	—	—
└ 141.212.134.0/23	512	UMICH-21033	unknown	—	—	—
└ 141.212.136.0/23	512	UMICH-21034	unknown	—	—	—
└ 141.212.138.0/23	512	UMICH-21035	unknown	—	—	—
└ 141.212.140.0/24	256	UMICH-21036	unknown	—	—	—
└ 141.212.141.0/24	256	UMICH-21041	unknown	—	—	—
└ 141.212.142.0/23	512	UMICH-21037	unknown	—	—	—
└ 141.212.144.128/26	64	UMICH-21059	unknown	—	—	—
└ 141.212.145.0/24	256	UMICH-21056	unknown	—	—	—
└ 141.212.146.0/24	256	UMICH-21049	unknown	—	—	—
└ 141.212.147.0/24	256	UMICH-29242	unknown	—	—	—
└ 141.212.148.0/24	256	UMICH-21050	unknown	—	—	—
└ 141.212.149.0/24	256	UMICH-29243	unknown	—	—	—
└ 141.212.150.0/24	256	UMICH-21051	unknown	—	—	—
└ 141.212.151.0/24	256	UMICH-29244	unknown	—	—	—
└ 141.212.152.0/24	256	UMICH-21052	unknown	—	—	—
└ 141.212.153.0/25	128	UMICH-28427	unknown	—	—	—
└ 141.212.153.128/25	128	UMICH-69251	unknown	—	—	—
└ 141.212.154.0/24	256	UMICH-21053	unknown	—	—	—
└ 141.212.157.0/24	256	UMICH-23714	unknown	—	—	—
└ 141.212.159.0/24	256	UMICH-21057	unknown	—	—	—
└ 141.212.160.0/23	512	UMICH-20784	unknown	—	—	—
└ 141.212.162.0/23	512	UMICH-21073	unknown	—	—	—
└ 141.212.164.0/23	512	UMICH-21074	unknown	—	—	—
└ 141.212.168.0/24	256	UMICH-21076	unknown	—	—	—
└ 141.212.169.0/24	256	UMICH-21081	unknown	—	—	—
└ 141.212.172.0/24	256	UMICH-21078	unknown	—	—	—
└ 141.212.174.0/24	256	UMICH-21079	unknown	—	—	—
└ 141.212.176.0/26	64	UMICH-20785	unknown	—	—	—
└ 141.212.177.0/24	256	UMICH-50129	unknown	—	—	—
└ 141.212.178.0/24	256	UMICH-23010	unknown	—	—	—
└ 141.212.180.0/24	256	UMICH-22419	unknown	—	—	—
└ 141.212.188.0/26	64	UMICH-22421	unknown	—	—	—
└ 141.212.188.128/26	64	UMICH-22431	unknown	—	—	—
└ 141.212.190.0/23	512	UMICH-22422	unknown	—	—	—
└ 141.212.192.0/23	512	UMICH-20786	unknown	—	—	—
└ 141.212.194.0/25	128	UMICH-20791	unknown	—	—	—
└ 141.212.194.128/25	128	UMICH-20805	unknown	—	—	—
└ 141.212.195.0/26	64	UMICH-20792	unknown	—	—	—
└ 141.212.195.64/26	64	UMICH-22439	unknown	—	—	—
└ 141.212.195.128/26	64	UMICH-22440	unknown	—	—	—
└ 141.212.195.192/26	64	UMICH-22441	unknown	—	—	—
└ 141.212.196.0/23	512	UMICH-20793	unknown	—	—	—
└ 141.212.200.0/24	256	UMICH-20797	unknown	—	—	—
└ 141.212.201.0/27	32	UMICH-20798	unknown	—	—	—
└ 141.212.201.224/27	32	UMICH-52670	unknown	—	—	—
└ 141.212.204.0/22	1,024	UMICH-20801	unknown	—	—	—
└ 141.212.208.32/28	16	UMICH-24128	unknown	—	—	—
└ 141.212.208.48/28	16	UMICH-24387	unknown	—	—	—
└ 141.212.208.64/26	64	UMICH-24129	unknown	—	—	—
└ 141.212.208.128/25	128	UMICH-24131	unknown	—	—	—
└ 141.212.209.0/27	32	UMICH-24113	unknown	—	—	—
└ 141.212.209.32/27	32	UMICH-25172	unknown	—	—	—
└ 141.212.209.64/27	32	UMICH-25171	unknown	—	—	—
└ 141.212.209.96/28	16	UMICH-28991	unknown	—	—	—
└ 141.212.209.112/28	16	UMICH-28992	unknown	—	—	—
└ 141.212.209.128/28	16	UMICH-24973	unknown	—	—	—
└ 141.212.209.144/28	16	UMICH-32692	unknown	—	—	—
└ 141.212.209.192/26	64	UMICH-32690	unknown	—	—	—
└ 141.212.210.0/24	256	UMICH-24114	unknown	—	—	—
└ 141.212.211.0/25	128	UMICH-24115	unknown	—	—	—
└ 141.212.211.128/25	128	UMICH-33301	unknown	—	—	—
└ 141.212.212.0/25	128	UMICH-24116	unknown	—	—	—
└ 141.212.212.128/25	128	UMICH-33302	unknown	—	—	—
└ 141.212.213.0/28	16	UMICH-24117	unknown	—	—	—
└ 141.212.224.0/27	32	UMICH-67045	unknown	—	—	—
└ 141.212.224.64/27	32	UMICH-77092	unknown	—	—	—
└ 141.212.225.0/27	32	UMICH-75281	unknown	—	—	—
└ 141.212.250.0/28	16	UMICH-22460	unknown	—	—	—
└ 141.212.250.48/28	16	UMICH-22507	unknown	—	—	—
└ 141.212.250.64/27	32	UMICH-22504	unknown	—	—	—
└ 141.212.250.96/27	32	UMICH-68821	unknown	—	—	—
└ 141.212.252.0/24	256	UMICH-22461	unknown	—	—	—
└ 141.212.253.0/28	16	UMICH-22500	unknown	—	—	—
└ 141.212.253.208/28	16	UMICH-62261	unknown	—	—	—
└ 141.212.253.224/28	16	UMICH-62262	unknown	—	—	—
└ 141.212.253.240/28	16	UMICH-62263	unknown	—	—	—
└ 141.212.254.0/29	8	UMICH-22462	unknown	—	—	—
└ 141.212.254.8/29	8	UMICH-33239	unknown	—	—	—
└ 141.212.254.16/29	8	UMICH-33240	unknown	—	—	—
└ 141.212.254.24/29	8	UMICH-33241	unknown	—	—	—
└ 141.212.254.32/29	8	UMICH-33242	unknown	—	—	—
└ 141.212.254.40/29	8	UMICH-33243	unknown	—	—	—
└ 141.212.254.48/29	8	UMICH-33244	unknown	—	—	—
└ 141.212.254.56/29	8	UMICH-33245	unknown	—	—	—
└ 141.212.254.64/29	8	UMICH-33246	unknown	—	—	—
└ 141.212.254.72/29	8	UMICH-33247	unknown	—	—	—
└ 141.212.254.80/29	8	UMICH-33248	unknown	—	—	—
└ 141.212.254.88/29	8	UMICH-33249	unknown	—	—	—
└ 141.212.254.104/29	8	UMICH-33251	unknown	—	—	—
└ 141.212.254.120/29	8	UMICH-33253	unknown	—	—	—

← Previous1–200 of 207 · page 1 of 2Next →

Network & registry

Announcement Routing history RPKI & IRR Whois & abuse

Origin network

AS36375

Name: University of Michigan
Type: Education
Registered: Dec 16, 2005
Domain: umich.edu
Industry: Education Software
Spamhaus ASN-DROP: not listed

RPKI

Route origin authorizations

ROA prefix	ASN	Max len	Anchor	Verdict
141.212.0.0/16	AS36375	/16	ARIN	RPKI valid

IRR

Route objects on the exact prefix

Origin	Registry	Description	Maintainer	Modified
AS36375	RADB	University of Michigan College of Engineering	MAINT-AS36375	Nov 13, 2023

141.212.0.0/16

Registrations in this block

Network & registry

AS36375

Who has announced this prefix

Routing history

History

Route origin authorizations

Route objects on the exact prefix

Registration for this announcement

Abuse contact