Home ASN LookupAS17638

AS17638 CHINATELECOM-TJ-AS-AP ASN for TIANJIN Provincial Net of CT

🇨🇳

Org handle: A914EAE4

ASN for TIANJIN Provincial Net of CT

APNICallocated

Announced Prefixes (BGP)

549total

530 IPv419 IPv6

IPv4 Addresses

Allocated (RIR)539,648

Announced (BGP)1.2M

IPv6 Addresses

Allocated (RIR)0

Announced (BGP)5.5×10²⁹

Prefix Limit (IPv4)

2,000

Prefix Limit (IPv6)

100

Country

🇨🇳 CN

RIR

APNIC

Status

allocated

Allocated

2002-11-18

Announced Prefixes

(BGP)549

Prefix	RPKI	IRR	Last Seen
36.106.0.0/17	Valid	Other IRR	2026-10-11
36.106.1.0/24	Valid	Other IRR	2026-10-11
36.106.4.0/24	Valid	Other IRR	2026-10-11
36.106.5.0/24	Valid	Other IRR	2026-10-11
36.106.6.0/24	Valid	Other IRR	2026-10-11
36.106.8.0/24	Valid	Other IRR	2026-10-11
36.106.9.0/24	Valid	Other IRR	2026-10-11
36.106.10.0/24	Valid	Other IRR	2026-10-11
36.106.11.0/24	Valid	Other IRR	2026-10-11
36.106.12.0/24	Valid	Other IRR	2026-10-11

1-10 of 549

1 / 55

Allocated Prefixes

(RIR)18

Prefix	Country	RIR	Status
42.80.0.0/15	🇨🇳 CN	APNIC	allocated
42.122.0.0/16	🇨🇳 CN	APNIC	allocated
106.47.0.0/16	🇨🇳 CN	APNIC	assigned
123.150.0.0/15	🇨🇳 CN	APNIC	allocated
123.150.4.0/24	🇨🇳 CN	APNIC	assigned
123.150.7.0/24	🇨🇳 CN	APNIC	assigned
123.150.12.0/22	🇨🇳 CN	APNIC	assigned
123.150.16.0/20	🇨🇳 CN	APNIC	assigned
123.151.21.0/24	🇨🇳 CN	APNIC	assigned
123.151.128.0/21	🇨🇳 CN	APNIC	assigned

1-10 of 18

1 / 2

All 549 announced prefixes of AS17638 →

BGP Neighbours

(seen in AS paths)

Upstreams (1)

Networks AS17638 hands its own prefixes to: transit providers, or peers at an exchange.

AS4134CHINANET BACKBONE No.31,Jin Rong Street549

Downstreams (1)

Networks whose own prefixes AS17638 passes on: usually its customers.

AS132536CHINANET TIANJIN MAN NEW China Telecom24

ASPA

No ASPA

External Links

APNIC Whois RIPEstat

Learn more

What is an ASN?Autonomous systems, ASN ranges and how they are assigned
RPKI and route origin validationWhat the RPKI badges on the prefix list mean
ASPA explainedWhy AS17638 should publish an ASPA object
IPv4 transfers in the APNIC regionMonthly volume and the latest registry transfers
ASN data in AI agents and SIEMMCP server and API integrations

API

Open

GEThttps://api.ipctl.io/v1/asn/17638

Returns ASN details, announced prefixes, and BGP routing data.

curl -s "https://api.ipctl.io/v1/asn/17638" | jq