AS16973 — TAG Systems TAG Systems de Costa Rica
AS Name: TFOUR-1
Description: T-FOUR Services LACNIC generated autnum for T-Four Services S.A
Registry: RADB
aut-num: AS16973
as-name: TFOUR-1
descr: T-FOUR Services
admin-c: Adrian Murillo
tech-c: T4 Support
mnt-by: MAINT-AS16973
changed: amurillo@t4.cr 20171006 #23:32:32Z
source: RADB
last-modified: 2025-12-05T19:00:04Z
aut-num: AS16973
descr: LACNIC generated autnum for T-Four Services S.A
as-name: AS16973
tech-c: IDS8
remarks: LACNIC generated autnum for CR-CHSA-LACNIC
mnt-by: MNT-CR-CHSA-LACNIC
changed: amurillo@tagsystems.com 20250606
source: LACNIC
Direct Membership
Macros that directly list AS16973 as a member:
AS398947:AS-REDCA(31 members)
AS-CTBC-CUSTOMERS221(50 members)
AS-UNE-TRANSIT(89 members)
AS262206:AS-CRI(103 members)
AS-DIVIVOX(197 members)
AS13335:AS-CUSTOMERS(1521 members)
AS-UFLA-TRANSCUST(1656 members)
AS-NWN-TRANSIT(2017 members)
AS3491:AS-CUSTOMERS-NA(2785 members)
AS-CTBC-TOOLS(8129 members)
AS-REACH-CUSTOMERS(8210 members)
AS-TELSTRA-INTL-CUSTOMERS(11248 members)
Expanded Membership
All macros containing AS16973 (directly or via nested macros): 275
Show 100 macros
AS398947:AS-REDCA(31 ASNs)
AS-CTBC-CUSTOMERS221(50 ASNs)
AS398947:AS-CUSTOMERS(84 ASNs)
AS-UNE-TRANSIT(89 ASNs)
AS262206:AS-CRI(103 ASNs)
AS-DIVIVOX(196 ASNs)
AS262206:AS-GLOBAL(315 ASNs)
AS13335:AS-CUSTOMERS(1,521 ASNs)
AS-UFLA-TRANSCUST(1,654 ASNs)
AS-NWN-TRANSIT(2,017 ASNs)
AS6830:AS-AORTAUS(2,041 ASNs)
AS-53013-CUSTOMERS-ASSET(4,310 ASNs)
AS-CTBC-TOOLS(8,129 ASNs)
AS-REACH-CUSTOMERS(8,210 ASNs)
AS24748:AS-IX(8,694 ASNs)
AS-CTBC(11,413 ASNs)
AS-SEABONECUSTLA(11,515 ASNs)
AS-AORTA(11,961 ASNs)
AS6830:AS-AORTA(11,961 ASNs)
AS-TELSTRA-INTL-CUSTOMERS(12,472 ASNs)
AS41073:AS-INEX-PEERS(14,843 ASNs)
AS-SEABORN-CUSTOMER(16,137 ASNs)
AS-SEABORN-CORE(16,222 ASNs)
AS-SEABORN(17,733 ASNs)
AS-EDGEUNO(19,687 ASNs)
AS-AS53013(20,143 ASNs)
AS-XO(23,361 ASNs)
AS-VSNL-IN(23,661 ASNs)
AS3491:AS-CUSTOMERS-NA(25,092 ASNs)
AS-MFNX(26,187 ASNs)
AS47214:AS-LILLIX(26,738 ASNs)
AS43100:AS-MEMBERS(26,826 ASNs)
AS-SFINX-RS-MEMBERS-IPV6(26,914 ASNs)
AS-SFINX-RS-MEMBERS(26,976 ASNs)
AS201376:AS-PEERS(42,984 ASNs)
AS2914:AS-US-V6(52,836 ASNs)
AS2914:AS-US(53,991 ASNs)
AS-NIXSK-RSCLIENTS(55,989 ASNs)
AS47627:AS-NIXSK-RSCLIENTS(56,033 ASNs)
AS-TOPIX-RS(57,252 ASNs)
AS-CTGNET(58,815 ASNs)
AS-37662(59,003 ASNs)
AS-CN(59,223 ASNs)
AS1273:AS-CWW(59,499 ASNs)
AS-LEVEL3-UAE(60,102 ASNs)
AS-PLIX6(60,222 ASNs)
AS-CAIS(61,483 ASNs)
AS213687:AS-ERA-IX-FRANKFURT(61,777 ASNs)
AS-SOVAM-V6(64,052 ASNs)
AS-SOVAM6(64,052 ASNs)
AS-HKIX(64,663 ASNs)
AS-TELIANETASIA(65,174 ASNs)
AS1299:AS-TWELVE99-AP-V4(65,174 ASNs)
AS-PANTEL(65,191 ASNs)
AS-TTI(65,191 ASNs)
AS206221:AS-ERA-IX-AMSTERDAM(65,700 ASNs)
AS-ERA-IX(65,707 ASNs)
AS5405:AS-INTERDOTLINK(66,620 ASNs)
AS-STUTTGARTIX-RS(66,636 ASNs)
AS-TELIANETASIA-V6(66,784 ASNs)
AS1299:AS-TWELVE99-AP-V6(66,784 ASNs)
AS-CW6(66,853 ASNs)
AS1273:AS-CWW-V6(66,853 ASNs)
AS201561:AS-DECIX-CPH(66,988 ASNs)
AS201561:AS-DECIX-CPH-V6(66,988 ASNs)
AS-SET-INEX-CONNECTED(67,097 ASNs)
AS-UAEIX(67,297 ASNs)
AS61374:AS-UAEIX(67,297 ASNs)
AS-CW(67,352 ASNs)
AS-SIXSK-SETS(67,561 ASNs)
AS-BIX(68,877 ASNs)
AS2914:AS-ASIA-V6(68,905 ASNs)
AS-SEABONECUSTEU(69,169 ASNs)
AS-FRYS-IX-CONNECTED(69,468 ASNs)
AS-BIX-BG(69,751 ASNs)
AS-NETIX-INT(69,913 ASNs)
AS43380:AS-DTEL-IX(69,913 ASNs)
AS-KIVIX(69,914 ASNs)
AS52055:AS-NETIX-GR(69,958 ASNs)
AS-SIX(70,009 ASNs)
AS-UBNIX(70,042 ASNs)
AS-GLOBAL-IX(70,222 ASNs)
AS-EPIX-LOCAL(70,298 ASNs)
AS-EPIX(70,299 ASNs)
AS56584:AS-SET-INTERIX-RS(70,331 ASNs)
AS17645:AS-NTTS(70,764 ASNs)
AS17645:AS-NTTS-IP(70,764 ASNs)
AS2914:AS-ASIA(70,764 ASNs)
AS-NETIX-NET(71,038 ASNs)
AS-IU-CL(71,146 ASNs)
AS-TSUA-PARITY(71,146 ASNs)
AS-UAIX(71,146 ASNs)
AS-UDC2UTEL(71,146 ASNs)
AS25229:AS-PARITY(71,150 ASNs)
AS-KIKE(71,185 ASNs)
AS21011:AS-PEERS-UA(71,230 ASNs)
AS21011:AS-UA(71,230 ASNs)
AS56584:AS-INTERIX(71,301 ASNs)
AS-SEABONE(71,409 ASNs)
AS3320:AS-DTAG-V6(71,426 ASNs)
... and 175 more
Upstream AS Paths
36 unique paths, avg length 2.5
AS Looking Glass
Upstream paths (matching graph above)
AS16973 IPv4 Address Subnets (14)
| 190.4.88.0/21 | 🇨🇷 CR | LACNIC generated route for T-Four Services S.A | TFOUR-1 |
| 168.205.64.0/22 | 🇨🇷 CR | LACNIC generated route for T-Four Services S.A | TFOUR-1 |
| 168.205.64.0/24 | 🇨🇷 CR | T-FOUR Services | TFOUR-1 |
| 168.205.65.0/24 | 🇨🇷 CR | T-FOUR Services | TFOUR-1 |
| 168.205.66.0/24 | 🇨🇷 CR | T-FOUR Services | TFOUR-1 |
| 168.205.67.0/24 | 🇨🇷 CR | T-FOUR Services | TFOUR-1 |
| 190.4.88.0/24 | 🇨🇷 CR | T-FOUR Services | TFOUR-1 |
| 190.4.89.0/24 | 🇨🇷 CR | T-FOUR Services | TFOUR-1 |
| 190.4.90.0/24 | 🇨🇷 CR | T-FOUR Services | TFOUR-1 |
| 190.4.91.0/24 | 🇨🇷 CR | T-FOUR Services | TFOUR-1 |
AS16973 IPv6 Address Subnets (1)
| 2803:3100::/32 | 🇨🇷 CR | LACNIC generated route6 for T-Four Services S.A | TFOUR-1 |