CENTURY-21 — IP ranges & network footprint

IP Ranges (2)

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CIDR	Org name	Registry	Status	Confidence
86.66.26.16/28	CENTURY-21	RIPE	ASSIGNED PA	● low
211.167.253.160/29	CENTURY-21	APNIC	ASSIGNED NON-PORTABLE	● low

Possibly related to this organisation

what's this?

Same name family

Separately-registered clusters whose names share “CENTURY 21” — often per-country or per-system registrations of the same brand, occasionally a different organisation sharing the name. Not counted in this organisation's own footprint.

Century 21 South Central States, Inc. 1 blocks
Century 21 of the Northeast, Inc. 1 blocks
Century 21 Region V, Inc. 1 blocks
Century 21 of the Southeast, Inc. 1 blocks
Century 21 of the West, Inc. 1 blocks
Century 21 of Eastern Pennsylvania, Inc. 1 blocks
Century 21 of the Pacific,Inc. 1 blocks
Century 21 of the Mid-Alantic States, Inc. 1 blocks

Combined view of all 13 name-family clusters →

Sub-allocations under carriers

IP blocks an ISP reassigned to a similarly-named customer — decoded from the ISP's own naming convention, not a direct registration.

Twenty First Century Fleetsystem Ltd 4D sub-allocation
Century-Smart-Information via Electronic Resources Company Ltd sub-allocation
L-IMMOBILIERE-DU-CENTRE-CENTURY-21_H9958-00001-001 via Societe Francaise Du Radiotelephone - SFR SA sub-allocation
INTEROUTE-21ST-CENTURY-COMMUNICATI_I2935-00003-002 via Societe Francaise Du Radiotelephone - SFR SA sub-allocation
INTEROUTE-21ST-CENTURY-COMMUNICATI_I2935-00002-002 via Societe Francaise Du Radiotelephone - SFR SA sub-allocation
INTEROUTE-21ST-CENTURY-COMMUNICATI_I2935-00005-002 via Societe Francaise Du Radiotelephone - SFR SA sub-allocation
CENTURYBIZ_GMBH-NET via M-net Telekommunikations GmbH sub-allocation
Century 21 Agence Des Ternes via Orange S.A. sub-allocation

Network trust

what's this?

RPKI hygiene: C how networks compare →

50.0% of checked blocks have valid RPKI ROA coverage (1 of 2)

No discrepancies found among checked blocks.

NIC Handles

DUMY-RIPE DUMY-RIPE LDCOM-MNT LDCOM-PRO-MNT MAINT-CNNIC-AP PP40-AP SD76-AP

Netblocks	2
Also registered under this name	14 netblocks across 13 separate records
Record ID	237852662
Registry	APNIC
Customers	see who runs inside this network →

Attribution	BGP parent (inherited)
Shared handles	clustered on 7 shared RIR contact/maintainer handles
Registry names	2 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue