Data as of Nov 12, 2026
77.74.37.0/24
No anonymizer space · no proxy exits in 30 daysUnitary enterprise A1
Announcement
this exact prefix
RPKI valid
Announced by
Type
Mobile
Risk
10 / 100 · Low
Shared address
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 77.74.32.0/21 since Apr 2007 | AS42772 | Mobile | 6 2 always on | Unitary enterprise A1 |
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 |
|---|---|---|---|---|---|---|
| 77.74.32.0/21 | 2,048 | BY-MDC-20070411 | Unitary enterprise A1 (ORG-JMDC1-RIPE) · BY | ALLOCATED PA | Apr 11, 2007 | abuse@ |
| └ 77.74.36.0/22 | 1,024 | A1-BELARUS | Unitary enterprise A1 (ORG-JMDC1-RIPE) · BY | ASSIGNED PA | Apr 21, 2009 | abuse@ |
Network & registry
IPv4 market
Holder
- Organization
- Unitary enterprise A1
- Handle
- ORG-JMDC1-RIPE
- Range
- 77.
74. 32. 0/ 21 - Registration type
- ALLOCATED PA
- Record created
- Apr 11, 2007
Origin network
AS42772
BY
- Name
- Unitary enterprise A1
- Type
- Internet provider
- Registered
- Apr 13, 2007
- Domain
- a1.by
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Mar 2020
- Current origin since
- Feb 2021 · 5.8 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 77.74.37.0/24 | AS42772 | /24 | RIPE | RPKI valid |
| 77.74.32.0/21 | AS42772 | /21 | RIPE | Too specific |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS42772 | RIPE | A1 BLR | MNT-MDC | Mar 30, 2020 |
Whois
Registration for this announcement
- Range
- 77.
74. 36. 0/ 22 - Netname
- A1-BELARUS
- Registrant
- Unitary enterprise A1
- Registrant country
- BY
- Organization
- Unitary enterprise A1 (ORG-JMDC1-RIPE)
- Org country
- BY
- Type
- ASSIGNED PA
- Created
- Apr 21, 2009
- Updated
- Feb 12, 2026
- Maintainer
- MNT-MDC
- RIR
- RIPE NCC
- Country
- BY
- Delegated
- Apr 11, 2007
- Status
- assigned
Report abuse
Abuse contact
- abuse@
a1. by - Name
- Velcom RIPE Admins
- Handle
- VELC-RIPE