% APNIC found the following authoritative answer from: whois.ripe.net

% This is the RIPE Database query service.
% The objects are in RPSL format.
%
% The RIPE Database is subject to Terms and Conditions.
% See https://apps.db.ripe.net/docs/HTML-Terms-And-Conditions

% Note: this output has been filtered.
%       To receive output for a database update, use the "-B" flag.

% Information related to 'AS38912 - AS39599'

as-block:       AS38912 - AS39599
descr:          RIPE NCC ASN block
remarks:        These AS Numbers are assigned to network operators in the RIPE NCC service region.
mnt-by:         RIPE-NCC-HM-MNT
created:        2023-08-29T07:47:54Z
last-modified:  2023-08-29T07:47:54Z
source:         RIPE

% Information related to 'AS39251'

% Abuse contact for 'AS39251' is 'abuse@netguard.bg'

aut-num:        AS39251
as-name:        NETGUARD
remarks:        Bulgaria
org:            ORG-NL288-RIPE
remarks:
remarks:        ========================================================
remarks:        Upstreams
remarks:        ========================================================
remarks:        # Level3
import:         from AS3356 accept ANY
export:         to AS3356 announce AS-NETGUARDBG
remarks:        # TiNet/GTT
import:         from AS3257 accept ANY
export:         to AS3257 announce AS-NETGUARDBG
remarks:        # Telia Sonera IC
import:         from AS1299 accept ANY
export:         to AS1299 announce AS-NETGUARDBG
remarks:        # NTT
import:         from AS2914 accept ANY
export:         to AS2914 announce AS-NETGUARDBG
remarks:        # TATA Communications
import:         from AS6453 accept ANY
export:         to AS6453 announce AS-NETGUARDBG
remarks:        # GCN
import:         from AS12615 accept ANY
export:         to AS12615 announce AS-NETGUARDBG
remarks:        # Cogent
import:         from AS174 accept ANY
export:         to AS174 announce AS-NETGUARDBG
remarks:        ========================================================
remarks:        BG Peerings, Clients, Transit
remarks:        ========================================================
import:         from AS42446 accept AS42446
export:         to AS42446 announce ANY
import:         from AS44017 accept AS44017
export:         to AS42446 announce ANY
import:         from AS47624 accept AS47624
export:         to AS47624 announce ANY
import:         from AS39401 accept AS-LINKPLUS
export:         to AS39401 announce ANY
import:         from AS20818 accept AS20818
export:         to AS20818 announce ANY
import:         from AS41922 accept AS41922
export:         to AS41922 announce ANY
import:         from AS202129 accept AS202129
export:         to AS202129 announce ANY
remarks:        ========================================================
remarks:
admin-c:        MB313-RIPE
tech-c:         MB313-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         NETGUARDBG-MNT
created:        2006-01-18T15:38:04Z
last-modified:  2024-05-24T11:44:04Z
source:         RIPE # Filtered

organisation:   ORG-NL288-RIPE
org-name:       NETGUARD LLC
country:        BG
org-type:       LIR
address:        bul. Maria Luiza 69V
address:        4000
address:        Plovdiv
address:        BULGARIA
phone:          +359 32 510115
admin-c:        MB313-RIPE
tech-c:         MB313-RIPE
abuse-c:        NAR41-RIPE
mnt-ref:        NETGUARDBG-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         NETGUARDBG-MNT
created:        2016-08-12T13:19:46Z
last-modified:  2020-12-16T12:51:26Z
source:         RIPE # Filtered

person:         Milen Bogunski
address:        NETGUARD Ltd.
address:        blvd. "Maria Luiza" N69
address:        4000 Plovdiv
address:        Bulgaria
phone:          +359 895 757275
fax-no:         +359 32 510 115
nic-hdl:        MB313-RIPE
created:        2008-04-15T14:26:15Z
last-modified:  2017-10-30T22:00:21Z
source:         RIPE # Filtered
mnt-by:         NETGUARDBG-MNT

% This query was served by the RIPE Database Query Service version 1.113.2 (SHETLAND)

Search for
IP address lookups			Miscellaneous queries
-l	1st level less specific		-i	Inverse attributes	None admin-c admin-c,tech-c,zone-c author cross-mnt cross-nfy local-as mbrs-by-ref member-of mnt-by mnt-lower mnt-nfy mnt-routes notify nserver origin person referral-by rev-srv sub-dom tech-c upd-to zone-c
-L	All less specific		-T	Object types	All as-block as-set aut-num domain filter-set inet-rtr inet6num inetnum irt key-cert mntner peering-set person role route route-set rtr-set
-m	1st level more specific
-M	All more specific		Query hints Include "AS" in front of an AS number. Example: AS4808 Include "-t" (template only) or "-v" (template and description) in front of an object name to view the template Example: -t inetnum
-x	Exact match only
-d	Associated reverse domain