[ IP ]
158.121.104.55
#257,475Top IPs · 1M scope1 domain
Overview
Top IPs list rank
- 1M
- #257,475(1 domains)
- Hosted domains (90 days)
- 1
- Hosted domains (all time)
- 1
- First seen
- Last seen
- Wed Jul 15 2026 05:53:48 GM
- PDNS hits (90 days)
- 4
- Country
- US
- Snapshot
- 1970-01-01
Network operated by University of Massachusetts at Boston (UMAB) (UMASSBOSTON2).
List rank history
2 daily snapshots in the Top IPs list (1M scope). Lower rank numbers indicate more hosted domains in scope.
Whois — 158.121.104.55
- Netname
- UMASSBOSTON2
- Organization
- University of Massachusetts at Boston (UMAB)
- Country
- US
- ASN
- —
Full whois record
# # ARIN WHOIS data and services are subject to the Terms of Use # available at: https://www.arin.net/resources/registry/whois/tou/ # # If you see inaccuracies in the results, please report at # https://www.arin.net/resources/registry/whois/inaccuracy_reporting/ # # Copyright 1997-2026, American Registry for Internet Numbers, Ltd. # NetRange: 158.121.0.0 - 158.121.255.255 CIDR: 158.121.0.0/16 NetName: UMASSBOSTON2 NetHandle: NET-158-121-0-0-1 Parent: NET158 (NET-158-0-0-0-0) NetType: Direct Allocation OriginAS: Organization: University of Massachusetts at Boston (UMAB) RegDate: 1992-02-28 Updated: 2021-12-14 Ref: https://rdap.arin.net/registry/ip/158.121.0.0 OrgName: University of Massachusetts at Boston OrgId: UMAB Address: IT Communication and Infrastructure Services Address: 100 Morrissey Bvld. City: Boston StateProv: MA PostalCode: 02125 Country: US RegDate: 1990-03-26 Updated: 2012-03-13 Ref: https://rdap.arin.net/registry/entity/UMAB OrgAbuseHandle: UNOC1-ARIN OrgAbuseName: UMB Network Operations Center OrgAbusePhone: +1-617-287-5236 OrgAbuseEmail: [email protected] OrgAbuseRef: https://rdap.arin.net/registry/entity/UNOC1-ARIN OrgNOCHandle: UNOC1-ARIN OrgNOCName: UMB Network Operations Center OrgNOCPhone: +1-617-287-5236 OrgNOCEmail: [email protected] OrgNOCRef: https://rdap.arin.net/registry/entity/UNOC1-ARIN OrgTechHandle: UNOC1-ARIN OrgTechName: UMB Network Operations Center OrgTechPhone: +1-617-287-5236 OrgTechEmail: [email protected] OrgTechRef: https://rdap.arin.net/registry/entity/UNOC1-ARIN # # ARIN WHOIS data and services are subject to the Terms of Use # available at: https://www.arin.net/resources/registry/whois/tou/ # # If you see inaccuracies in the results, please report at # https://www.arin.net/resources/registry/whois/inaccuracy_reporting/ # # Copyright 1997-2026, American Registry for Internet Numbers, Ltd. #
Open ports — 158.121.104.55
Port scan not run for 158.121.104.55 yet. Probes are queued from passive DNS IPs in the worker pipeline.