Home Prefix Lookup100.42.20.0/24

100.42.20.0/24 - CenturyLink Communications (AS3561)

IPv4ARINannouncedAS3561CENTURYLINK-LEGACY-SAVVIS - CenturyLink Communications, LLC RPKI Valid

CIDR

100.42.20.0/24

IP Version

IPv4

Addresses

256

Mask

/24 (255.255.255.0)

Country

🇨🇦 Canada

City

Toronto

RIR

ARIN

Status

announced

Allocated

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

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Prefix	Origin AS	RPKI	IRR	Last Seen
100.42.20.0/24	AS3561 CENTURYLINK-LEGACY-SAVVIS - CenturyLink Communications, LLC	Valid	-	2026-10-11

Covering Prefix

1 less-specific announcement

Prefix	Origin AS	RPKI	IRR	Last Seen
100.42.16.0/20	AS46841 FORKNETWORKING - Fork Networking, LLC	Valid	-	2026-10-11

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
100.42.20.0/23	AS3561	/24	arin
100.42.16.0/20	AS46841	/20	arin

Origin ASN

AS3561

CENTURYLINK-LEGACY-SAVVIS - CenturyLink Communications, LLC

Related Prefixes

Covering prefix

100.42.16.0/20AS46841

More prefixes of AS3561

All prefixes of AS3561 →

Geolocation

Country🇨🇦CanadaCA

RegionOntario

CityToronto

Coordinates43.6532, -79.3832 ↗

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/100.42.20.0/24

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

curl -s "https://api.ipctl.io/v1/prefix/100.42.20.0/24" | jq

External Links

RIPEstat