Home Prefix Lookup47.117.248.0/21

47.117.248.0/21 - ALIBABA CN NET Hangzhou Alibaba Advertising (AS37963)

IPv4APNICannouncedAS37963ALIBABA-CN-NET Hangzhou Alibaba Advertising Co.,Ltd. RPKI Valid

CIDR

47.117.248.0/21

IP Version

IPv4

Addresses

Mask

/21 (255.255.248.0)

Country

🇨🇳 China

City

Shanghai

RIR

APNIC

Status

announced

Allocated

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Swipe sideways to see all columns →

Prefix	Origin AS	RPKI	IRR	Last Seen
47.117.248.0/21	AS37963 ALIBABA-CN-NET Hangzhou Alibaba Advertising Co.,Ltd.	Valid	APNIC	2026-10-11

Related Announcements

2 less-specific, 8 more-specific announcements

Prefix	Origin AS	RPKI	IRR	Last Seen
47.117.0.0/16	AS37963 ALIBABA-CN-NET Hangzhou Alibaba Advertising Co.,Ltd.	Valid	-	2026-10-11
47.117.128.0/17	AS37963 ALIBABA-CN-NET Hangzhou Alibaba Advertising Co.,Ltd.	Valid	-	2026-10-11
47.117.248.0/24	AS37963 ALIBABA-CN-NET Hangzhou Alibaba Advertising Co.,Ltd.	Valid	-	2026-10-11
47.117.249.0/24	AS37963 ALIBABA-CN-NET Hangzhou Alibaba Advertising Co.,Ltd.	Valid	-	2026-10-11
47.117.250.0/24	AS37963 ALIBABA-CN-NET Hangzhou Alibaba Advertising Co.,Ltd.	Valid	-	2026-10-11
47.117.251.0/24	AS37963 ALIBABA-CN-NET Hangzhou Alibaba Advertising Co.,Ltd.	Valid	-	2026-10-11
47.117.252.0/24	AS37963 ALIBABA-CN-NET Hangzhou Alibaba Advertising Co.,Ltd.	Valid	-	2026-10-11
47.117.253.0/24	AS37963 ALIBABA-CN-NET Hangzhou Alibaba Advertising Co.,Ltd.	Valid	-	2026-10-11
47.117.254.0/24	AS37963 ALIBABA-CN-NET Hangzhou Alibaba Advertising Co.,Ltd.	Valid	-	2026-10-11
47.117.255.0/24	AS37963 ALIBABA-CN-NET Hangzhou Alibaba Advertising Co.,Ltd.	Valid	-	2026-10-11

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
47.112.0.0/12	AS37963	/24	apnic

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS37963	APNIC	MAINT-CNNIC-AP	2020-07-10
AS45102	APNIC	MAINT-CNNIC-AP	2020-07-10

Transfer History

Registry transfers of 47.117.248.0/21, blocks inside it, or blocks containing it.

47.116.0.0/14inter-RIRTransfer · 2015-05-07
Bell-Northern Research
🇨🇦 CA ARIN
→
China Internet Network Information Center/ALISOFT
🇨🇳 CN APNIC

Date	Resource	From	To	Type
2015-05-07	47.116.0.0/14inter-RIR	Bell-Northern Research 🇨🇦 CA ARIN	China Internet Network Information Center/ALISOFT 🇨🇳 CN APNIC	Transfer

Origin ASN

AS37963

ALIBABA-CN-NET Hangzhou Alibaba Advertising Co.,Ltd.

Related Prefixes

Covering prefix

47.117.128.0/17AS37963

More prefixes of AS37963

All prefixes of AS37963 →

Geolocation

Country🇨🇳ChinaCN

RegionShanghai

CityShanghai

Coordinates31.2304, 121.4740 ↗

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/47.117.248.0/21

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

curl -s "https://api.ipctl.io/v1/prefix/47.117.248.0/21" | jq

External Links

RIPEstat