Autonomous system
AS37936 SINA 15F,Ideal Plaza No.58 Bei Si Huan Xi Road
Unclassified APNIC
Summary
Sina
business china corporate
The AS handle SINA is held by Sina.
What it's used for
- The address space carries corporate infrastructure, evidenced by the netname
SINAand reverse DNS entries likesmtp254-127.sina.com.cn. - The AS announces 1280 IPv4 addresses across 4 prefixes and 5 IPv6 prefixes, with only 2 observed neighbours, indicating a small, self-contained corporate estate rather than a transit or access network.
- Traffic from this AS consists of internal corporate services and endpoints for Sina's business operations.
Notable
- All registrants for the announced prefixes are
IRT-SINA-CN, matching the announcer. - The address inventory is finely subdivided into small /24 and /23 blocks, consistent with internal site-by-site segmentation.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-15, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 4 prefixes · 1.28K addresses IPv6 5 prefixes
| Country | Name | Prefixes |
|---|---|---|
| CN | China | 9 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS37936- Registry name
- SINA
- Abuse contact
- yonggang1@staff.sina.com
- Registered
- 2017-08-10
- Last changed
- 2023-11-28
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 10 valid, 0 with no ROA
- ROAs
- 10 authorising AS37936
- ASPA
- no ASPA record
- IRR
- 100% registered · 10 of 10 announcements
- Route objects
- 1,019 naming AS37936
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 442 networks and 1,782 prefixes, as published 2026-10-16. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere