Home Prefix Lookup203.194.64.0/19

203.194.64.0/19 - AT&T Enterprises (AS2687)

IPv4APNICallocatedAS2687ATGS-MMD-AS - AT&T Enterprises, LLCNo ROA

CIDR

203.194.64.0/19

IP Version

IPv4

Addresses

8.1K

Mask

/19 (255.255.224.0)

Country

🇯🇵 Japan

City

Chiyoda City

RIR

APNIC

Status

allocated

Allocated

2001-12-20

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Swipe sideways to see all columns →

Prefix	Origin AS	RPKI	IRR	Last Seen
203.194.64.0/19	AS2687 ATGS-MMD-AS - AT&T Enterprises, LLC	No ROA	Other IRR	2026-10-13

More-Specific Announcements

1 more-specific announcement

Prefix	Origin AS	RPKI	IRR	Last Seen
203.194.90.0/23	AS2687 ATGS-MMD-AS - AT&T Enterprises, LLC	No ROA	-	2026-10-13

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS2687	Other IRR	MAINT-AS4637	2023-11-13

More Specific Prefixes

Prefix	Country	Status
203.194.70.128/28	🇦🇺AU	assigned
203.194.70.144/28	🇳🇿NZ	assigned
203.194.71.36/30	🇮🇩ID	assigned
203.194.71.64/30	🇮🇩ID	assigned
203.194.71.72/30	🇯🇵JP	assigned
203.194.72.48/28	🇭🇰HK	assigned
203.194.72.64/29	🇭🇰HK	assigned
203.194.72.128/25	🇭🇰HK	assigned
203.194.74.0/29	🇲🇾MY	assigned
203.194.74.8/29	🇲🇾MY	assigned
203.194.74.16/29	🇲🇾MY	assigned
203.194.74.24/29	🇲🇾MY	assigned
203.194.74.32/29	🇲🇾MY	assigned
203.194.74.56/29	🇲🇾MY	assigned
203.194.74.88/29	🇲🇾MY	assigned
203.194.74.96/29	🇲🇾MY	assigned
203.194.74.104/29	🇲🇾MY	assigned
203.194.74.144/29	🇲🇾MY	assigned
203.194.74.160/29	🇲🇾MY	assigned
203.194.74.176/29	🇲🇾MY	assigned
203.194.74.184/29	🇲🇾MY	assigned
203.194.74.192/29	🇲🇾MY	assigned
203.194.74.200/29	🇲🇾MY	assigned
203.194.74.208/29	🇲🇾MY	assigned
203.194.74.216/29	🇲🇾MY	assigned
203.194.74.224/28	🇲🇾MY	assigned
203.194.74.240/28	🇲🇾MY	assigned
203.194.77.0/27	🇭🇰HK	assigned
203.194.77.32/28	🇭🇰HK	assigned
203.194.77.48/28	🇭🇰HK	assigned
203.194.77.64/26	🇭🇰HK	assigned
203.194.78.160/27	🇸🇬SG	assigned
203.194.79.0/26	🇹🇼TW	assigned
203.194.80.32/27	🇭🇰HK	assigned
203.194.80.128/28	🇭🇰HK	assigned
203.194.83.192/29	🇹🇼TW	assigned
203.194.83.208/28	🇭🇰HK	assigned
203.194.85.128/26	🇹🇼TW	assigned
203.194.85.192/26	🇹🇼TW	assigned
203.194.86.0/29	🇭🇰HK	assigned
203.194.86.80/28	🇭🇰HK	assigned
203.194.86.128/28	🇭🇰HK	assigned
203.194.86.144/28	🇭🇰HK	assigned
203.194.86.184/29	🇭🇰HK	assigned
203.194.86.208/28	🇭🇰HK	assigned
203.194.86.240/28	🇭🇰HK	assigned
203.194.87.4/30	🇸🇬SG	assigned
203.194.87.8/30	🇸🇬SG	assigned
203.194.87.13/32	🇸🇬SG	assigned
203.194.87.32/27	🇸🇬SG	assigned
203.194.87.72/29	🇸🇬SG	assigned
203.194.87.80/30	🇸🇬SG	assigned
203.194.87.88/29	🇸🇬SG	assigned
203.194.87.112/29	🇸🇬SG	assigned
203.194.87.120/29	🇸🇬SG	assigned
203.194.87.128/26	🇸🇬SG	assigned
203.194.87.192/29	🇸🇬SG	assigned
203.194.87.200/29	🇸🇬SG	assigned
203.194.88.48/29	🇹🇼TW	assigned
203.194.88.56/29	🇸🇬SG	assigned
203.194.88.64/28	🇹🇼TW	assigned
203.194.89.64/29	🇯🇵JP	assigned
203.194.89.128/28	🇯🇵JP	assigned
203.194.91.64/27	🇦🇺AU	assigned
203.194.91.192/27	🇦🇺AU	assigned
203.194.94.104/29	🇦🇺AU	assigned
203.194.94.112/29	🇦🇺AU	assigned
203.194.94.136/29	🇭🇰HK	assigned
203.194.94.144/29	🇦🇺AU	assigned
203.194.94.152/29	🇦🇺AU	assigned
203.194.94.168/29	🇦🇺AU	assigned
203.194.94.224/29	🇦🇺AU	assigned
203.194.95.64/28	🇹🇼TW	assigned

Origin ASN

AS2687

ATGS-MMD-AS - AT&T Enterprises, LLC

Related Prefixes

More prefixes of AS2687

All prefixes of AS2687 →

Geolocation

Country🇯🇵JapanJP

RegionTokyo

CityChiyoda City

Coordinates35.6940, 139.7540 ↗

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 APNIC regionWho bought and sold address space recently

API

Open

GEThttps://api.ipctl.io/v1/prefix/203.194.64.0/19

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

curl -s "https://api.ipctl.io/v1/prefix/203.194.64.0/19" | jq

External Links

RIPEstat