Data as of Nov 3, 2026
172.81.4.0/22
No anonymizer space · no proxy exits in 30 daysBtig LLC
Announcements
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 172.81.4.0/24 since May 2021 | AS30417 | Business | Btig LLC | |
| 172.81.5.0/24 since Sep 2021 | AS30417 | Business | Btig LLC | |
| 172.81.6.0/24 since Sep 2021 | AS30417 | Business | Btig LLC | |
| 172.81.7.0/24 since Oct 2023 | AS30417 | Business | Btig LLC |
Registrations in this block
The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 172.81.4.0/22 | 1,024 | BTIG-LLC | Btig LLC (BL-1045) · US | Direct Allocation | May 3, 2021 | [email protected] |
| └ 172.81.4.0/24 | 256 | NY2-COLO | Btig LLC (C11173828) · US | Reassigned | Apr 16, 2025 | [email protected] via BTIG-LLC |
A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.
Network & registry
Origin network
AS30417
US
- Name
- Btig LLC
- Type
- Business
- Registered
- Oct 3, 2003
- Domain
- btig.com
- Industry
- Community Groups and Nonprofits
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- May 2021
- Current origin since
- May 2021 · 5.5 yr
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 172.81.4.0/22
- Netname
- BTIG-LLC
- Registrant
- Btig LLC
- Organization
- Btig LLC (BL-1045)
- Org address
- 350 Bush Street, San Francisco, CA, 94104
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-172-81-4-0-1
- Parent
- NET-172-0-0-0-0
- Created
- May 3, 2021
- RIR
- ARIN
- Country
- US
- Delegated
- May 3, 2021
- Status
- assigned
Report abuse
Abuse contact
- [email protected]
- Name
- Mui, Albert L
- Phone
- +1-212-593-4480
- Handle
- ALM15-ARIN