21100 ITLDC-EU, US
Adjacency: 10 Upstream: 5 Downstream: 5
Upstream Adjacent AS list
AS24961 MYLOC-AS WIIT group IP Backbone, DE
AS174 COGENT-174 - Cogent Communications, LLC, US
AS6461 ZAYO-6461 - Zayo Bandwidth, US
AS9002 RETN-AS, GB
AS50673 SERVERIUS-AS, NL
Downstream Adjacent AS list
AS15800 COORDINATOR-AS East-Ukrainian NIC, UA
AS29012 SCANA-AS Kharkov, UA
AS200313 INTERNET-IT, VG
AS199058 SERVAONE, GB
AS202051 NETGRID-HOST-LT, GB
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 8603 AS21100 ORG+TRN Originate: 13568 /18.27 Transit: 7168 /19.19 ITLDC-EU, US
Aggregation Suggestions
Filter: Aggregates, Specifics
This report does not take into account conditions local to each origin AS in terms of policy or traffic engineering requirements, so this is an approximate guideline as to aggregation possibilities.
Rank AS AS Name Current Wthdw Aggte Annce Redctn % 35234 AS21100 ITLDC-EU, US 32 0 0 32 0 0.00% Prefix AS Path Aggregation Suggestion 5.34.180.0/23 4777 2497 174 21100 45.128.150.0/24 4777 2497 174 21100 46.28.65.0/24 4777 2497 2914 9002 21100 46.28.66.0/24 4777 2516 3257 9002 21100 46.28.68.0/24 4777 2497 6461 21100 46.28.69.0/24 4777 2497 2914 9002 21100 82.118.16.0/24 4777 2497 6461 21100 82.118.19.0/24 4777 2497 2914 9002 21100 91.90.192.0/24 4777 2497 174 21100 91.90.194.0/24 4777 2497 174 21100 91.223.123.0/24 4777 2497 174 21100 91.235.129.0/24 4777 2516 6830 50673 21100 93.187.64.0/24 4777 2497 174 21100 185.14.28.0/22 4777 2497 174 21100 185.62.0.0/24 4777 2497 6461 21100 185.174.172.0/22 4777 2516 6830 50673 21100 185.198.164.0/22 4777 2497 174 21100 185.237.206.0/23 4777 2516 6830 50673 21100 193.106.150.0/24 4777 2497 174 21100 193.161.202.0/24 4777 2497 174 21100 195.54.162.0/24 4777 2516 6830 50673 21100 195.123.216.0/21 4777 2497 174 21100 195.123.237.0/24 4608 1221 4637 24961 21100 195.245.112.0/23 4777 2497 174 21100 212.8.245.0/24 4777 2497 174 21100 213.134.2.0/24 4777 2497 174 21100 217.12.200.0/23 4777 2497 174 21100 217.12.208.0/23 4777 2497 174 21100 217.12.215.0/24 4777 2516 3257 9002 21100 217.12.218.0/24 4777 2497 174 21100 217.12.219.0/24 4777 2497 6461 21100 217.12.220.0/24 4777 2497 2914 9002 21100
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS21100 21 More Specifics 32 Total Advertisements ITLDC-EU, US
5.34.180.0/23 5.34.176.0/21
45.128.150.0/24 45.128.148.0/22
46.28.65.0/24 46.28.64.0/21
46.28.66.0/24 46.28.64.0/21
46.28.68.0/24 46.28.64.0/21
46.28.69.0/24 46.28.64.0/21
82.118.16.0/24 82.118.16.0/21
82.118.19.0/24 82.118.16.0/21
91.90.192.0/24 91.90.192.0/22
91.90.194.0/24 91.90.192.0/22
91.235.129.0/24 91.235.128.0/23
185.237.206.0/23 185.237.204.0/22
195.54.162.0/24 195.54.162.0/23
195.123.216.0/21 195.123.208.0/20
195.123.237.0/24 195.123.224.0/20
217.12.200.0/23 217.12.192.0/20
217.12.208.0/23 217.12.208.0/20
217.12.215.0/24 217.12.208.0/20
217.12.218.0/24 217.12.208.0/20
217.12.219.0/24 217.12.208.0/20
217.12.220.0/24 217.12.208.0/20
Prefixes added and withdrawn by this origin AS in the past 7 days.
+ 91.235.129.0/24 Announced
+ 185.174.172.0/22 Announced
+ 185.237.206.0/23 Announced
+ 195.54.162.0/24 Announced
whois: 402332
IANA has recorded AS21100 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS21100\n % This is the RIPE Database query service.
% The objects are in RPSL format.
%
% The RIPE Database is subject to Terms and Conditions.
% See https://docs.db.ripe.net/terms-conditions.html
% Note: this output has been filtered.
% Information related to 'AS21004 - AS21151'
as-block: AS21004 - AS21151
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: 2018-11-22T15:27:27Z
last-modified: 2018-11-22T15:27:27Z
source: RIPE
% Information related to 'AS21100'
% Abuse contact for 'AS21100' is 'abuse@greenfloid.com'
aut-num: AS21100
as-name: ITLDC-EU
org: ORG-GFL2-RIPE
remarks: -------------- IPv4 --------------
import: from AS50673 action pref=80; accept ANY
import: from AS174 action pref=90; accept ANY
import: from AS24785 action pref=80; accept ANY
import: from AS20562 action pref=80; accept ANY
import: from AS41441 action pref=95; accept ANY
import: from AS34307 action pref=95; accept ANY
import: from AS12637 action pref=80; accept ANY
import: from AS24961 action pref=80; accept ANY
import: from AS29067 action pref=100; accept { 195.47.253.0/24, 185.159.140.0/24 }
import: from AS15800 action pref=100; accept AS15800
import: from AS8254 action pref=100; accept AS8254
import: from AS209832 action pref=100; accept { 109.196.128.0/23 }
import: from AS200313 action pref=100; accept { 45.88.3.0/24, 45.133.200.0/24, 45.133.201.0/24, 45.133.203.0/24, 195.242.110.0/23, 195.242.118.0/23 }
import: from AS199058 action pref=100; accept AS199058
import: from AS34700 action pref=100; accept { 31.202.15.0/24 }
import: from AS29012 action pref=100; accept AS-SCANA
import: from AS202656 action pref=100; accept { 193.203.50.0/24, 193.203.51.0/24 }
export: to AS50673 announce AS-ITLNL
export: to AS174 announce AS-ITLNL
export: to AS24785 announce AS-ITLNL
export: to AS20562 announce AS-ITLNL
export: to AS41441 announce AS-ITLNL
export: to AS34307 announce AS-ITLNL
export: to AS12637 announce { 82.118.16.0/24, 217.12.219.0/24, 185.62.0.0/24 } AS199058
export: to AS24961 announce AS21100:AS-EU9-DUS
export: to AS59796 announce AS-ITLNL
export: to AS29067 announce { 0.0.0.0/0 }
export: to AS15800 announce { 0.0.0.0/0 }
export: to AS8254 announce { 0.0.0.0/0 }
export: to AS209832 announce { 0.0.0.0/0 }
export: to AS200313 announce { 0.0.0.0/0 }
export: to AS199058 announce { 0.0.0.0/0 }
export: to AS34700 announce { 0.0.0.0/0 }
export: to AS29012 announce { 0.0.0.0/0 }
export: to AS202656 announce { 0.0.0.0/0 }
remarks: -------------- IPv6 --------------
mp-import: afi ipv6.unicast from AS50673 accept ANY
mp-import: afi ipv6.unicast from AS174 accept ANY
mp-import: afi ipv6.unicast from AS24785 accept ANY
mp-import: afi ipv6.unicast from AS20562 accept ANY
mp-import: afi ipv6.unicast from AS34307 accept ANY
mp-import: afi ipv6.unicast from AS12637 accept ANY
mp-import: afi ipv6.unicast from AS24961 accept ANY
mp-import: afi ipv6.unicast from AS29067 accept { 2001:67c:258::/48 }
mp-import: afi ipv6.unicast from AS15800 accept AS15800
mp-import: afi ipv6.unicast from AS202656 accept { 2a13:f580:7::/48 }
mp-export: afi ipv6.unicast to AS50673 announce AS-ITLNL
mp-export: afi ipv6.unicast to AS174 announce AS-ITLNL
mp-export: afi ipv6.unicast to AS24785 announce AS-ITLNL
mp-export: afi ipv6.unicast to AS20562 announce AS-ITLNL
mp-export: afi ipv6.unicast to AS34307 announce AS-ITLNL
mp-export: afi ipv6.unicast to AS12637 announce { 2a02:27ae::/32, 2a06:fcc0:3::/48 }
mp-export: afi ipv6.unicast to AS24961 announce { 2a02:27af::/32 }
mp-export: afi ipv6.unicast to AS29067 announce { 0::0/0 }
mp-export: afi ipv6.unicast to AS15800 announce { 0::0/0 }
mp-export: afi ipv6.unicast to AS202656 announce { 0::0/0 }
admin-c: GRFL-RIPE
tech-c: GRFL-RIPE
status: ASSIGNED
mnt-by: RIPE-NCC-END-MNT
mnt-by: GRFL-MNT
created: 2002-06-21T13:43:58Z
last-modified: 2026-02-16T13:50:42Z
source: RIPE
organisation: ORG-GFL2-RIPE
org-name: GREEN FLOID LLC
country: US
org-type: LIR
address: 2875 NE 191 ST 500-234
address: 33180
address: Aventura
address: UNITED STATES
phone: +15612500001
reg-nr: L15000049528 (Florida)
admin-c: GA12455-RIPE
tech-c: GA12455-RIPE
abuse-c: AR65589-RIPE
mnt-ref: GRFL-MNT
mnt-by: RIPE-NCC-HM-MNT
mnt-by: GRFL-MNT
created: 2021-10-12T12:26:33Z
last-modified: 2026-04-29T05:29:07Z
source: RIPE # Filtered
%ERROR:201: access denied for 2401:2000:6660:0:0:0:0:13
%
% Queries from your IP address have passed the daily limit of controlled objects.
% Access from your host has been temporarily denied.
% For more information, see
% https://docs.db.ripe.net/FAQ#why-did-i-receive-an-error-201-access-denied
% This query was served by the RIPE Database Query Service version 1.122 (DEXTER)