Home Prefix Lookup173.253.0.0/17

173.253.0.0/17 - Tzulo (AS11878)

IPv4ARINallocatedAS11878TZULO - tzulo, inc. RPKI Valid

CIDR

173.253.0.0/17

IP Version

IPv4

Addresses

32.7K

Mask

/17 (255.255.128.0)

Country

🇺🇸 United States

City

Chicago (Loop)

RIR

ARIN

Status

allocated

Allocated

2010-09-22

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

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Prefix	Origin AS	RPKI	IRR	Last Seen
173.253.0.0/17	AS11878 TZULO - tzulo, inc.	Valid	ARINOther IRR	2026-10-11

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
173.253.0.0/17	AS11878	/32	arin

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS11878	ARIN	MNT-TZULO	2026-01-02
AS11878	Other IRR	MAINT-AS11878	2023-11-13

Origin ASN

AS11878

TZULO - tzulo, inc.

Related Prefixes

More prefixes of AS11878

All prefixes of AS11878 →

Geolocation

Country🇺🇸United StatesUS

RegionIllinois

CityChicago (Loop)

Coordinates41.8761, -87.6316 ↗

Learn more

RPKI and ROAs explainedWhat RPKI valid, invalid and no ROA mean
RPKI validatorCheck ROA coverage for any prefix or ASN
What is BGP?How prefixes are announced and routed
More-specific prefixesGlossary: covering and more-specific routes
IPv4 transfers in the ARIN regionWho bought and sold address space recently

API

Open

GEThttps://api.ipctl.io/v1/prefix/173.253.0.0/17

Returns prefix allocation, BGP routes, and more-specific subnets.

curl -s "https://api.ipctl.io/v1/prefix/173.253.0.0/17" | jq

External Links

RIPEstat