IPv4 R&E Routing Table Report 23:00 GMT Thu 12 Mar, 2026 IPv4 BGP Table (Global) as seen at Singapore. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/Singapore/ Analysis Summary ---------------- BGP routing table entries examined: 1033914 Prefixes after maximum aggregation (per Origin AS): 397738 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 511266 Number of IPv4 prefixes with a valid ROA: 623014 Number of IPv4 prefixes with an invalid ROA: 459 Number of IPv4 prefixes with no ROA: 410441 Total ASes present in the Internet Routing Table: 78035 Prefixes per ASN: 13.25 Origin-only ASes present in the Internet Routing Table: 66856 Origin ASes announcing only one prefix: 27262 Transit ASes present in the Internet Routing Table: 11179 Transit-only ASes present in the Internet Routing Table: 582 Paths with bogon ASNs present in the IPv4 Routing Table: 40 Average AS path length visible in the Internet Routing Table: 4.8 Max AS path length visible: 70 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 1109 Number of instances of unregistered ASNs: 1138 Number of 32-bit ASNs allocated by the RIRs: 48932 Number of 32-bit ASNs visible in the Routing Table: 40056 Prefixes from 32-bit ASNs in the Routing Table: 224679 Number of bogon 32-bit ASNs visible in the Routing Table: 78 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 419 Number of addresses announced to Internet: 3108883200 Equivalent to 185 /8s, 77 /16s and 203 /24s Percentage of available address space announced: 84.0 Percentage of allocated address space announced: 84.0 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 99.6 Total number of prefixes smaller than registry allocations: 337163 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 281226 Total APNIC prefixes after maximum aggregation: 81760 APNIC Deaggregation factor: 3.44 Prefixes being announced from the APNIC address blocks: 268382 Unique aggregates announced from the APNIC address blocks: 107177 APNIC Region origin ASes present in the Internet Routing Table: 15104 APNIC Prefixes per ASN: 17.77 APNIC Region origin ASes announcing only one prefix: 4610 APNIC Region transit ASes present in the Internet Routing Table: 2038 Average APNIC Region AS path length visible: 4.7 Max APNIC Region AS path length visible: 52 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10675 Number of APNIC addresses announced to Internet: 751962624 Equivalent to 44 /8s, 210 /16s and 10 /24s APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431 (pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319, 58368-59391, 63488-64098, 64297-64395, 131072-155961 APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8, 49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8, 106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8, 116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8, 123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8, 163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8, 203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8, 222/8, 223/8, ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 302911 Total ARIN prefixes after maximum aggregation: 136852 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 301624 Unique aggregates announced from the ARIN address blocks: 146901 ARIN Region origin ASes present in the Internet Routing Table: 19363 ARIN Prefixes per ASN: 15.58 ARIN Region origin ASes announcing only one prefix: 7084 ARIN Region transit ASes present in the Internet Routing Table: 1926 Average ARIN Region AS path length visible: 4.3 Max ARIN Region AS path length visible: 24 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5498 Number of ARIN addresses announced to Internet: 1349766912 Equivalent to 80 /8s, 115 /16s and 207 /24s ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106 (pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153 3354-4607, 4865-5119, 5632-6655, 6912-7466 7723-8191, 10240-12287, 13312-15359, 16384-17407 18432-20479, 21504-23551, 25600-26591, 26624-27647, 29696-30719, 31744-33791 35840-36863, 39936-40959, 46080-47103 53248-55295, 62464-63487, 64198-64296, 393216-402332 ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8, 12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8, 20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8, 29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8, 40/8, 44/8, 45/8, 47/8, 48/8, 50/8, 52/8, 54/8, 55/8, 56/8, 63/8, 64/8, 65/8, 66/8, 67/8, 68/8, 69/8, 70/8, 71/8, 72/8, 73/8, 74/8, 75/8, 76/8, 96/8, 97/8, 98/8, 99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8, 130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8, 138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8, 147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8, 158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8, 166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8, 174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8, 206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8, RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 284904 Total RIPE prefixes after maximum aggregation: 140861 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 287566 Unique aggregates announced from the RIPE address blocks: 187235 RIPE Region origin ASes present in the Internet Routing Table: 29286 RIPE Prefixes per ASN: 9.82 RIPE Region origin ASes announcing only one prefix: 12153 RIPE Region transit ASes present in the Internet Routing Table: 4057 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 30 Number of RIPE region 32-bit ASNs visible in the Routing Table: 13136 Number of RIPE addresses announced to Internet: 733399552 Equivalent to 43 /8s, 182 /16s and 202 /24s RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614 (pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631 6656-6911, 8192-9215, 12288-13311, 15360-16383 20480-21503, 24576-25599, 28672-29695 30720-31743, 33792-35839, 38912-39935 40960-45055, 47104-52223, 56320-58367 59392-61439, 61952-62463, 64396-64495 196608-216475 RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8, 53/8, 57/8, 62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8, 83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8, 90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 109/8, 141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8, 193/8, 194/8, 195/8, 212/8, 213/8, 217/8, LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 126917 Total LACNIC prefixes after maximum aggregation: 30610 LACNIC Deaggregation factor: 4.15 Prefixes being announced from the LACNIC address blocks: 122650 Unique aggregates announced from the LACNIC address blocks: 50099 LACNIC Region origin ASes present in the Internet Routing Table: 11356 LACNIC Prefixes per ASN: 10.80 LACNIC Region origin ASes announcing only one prefix: 2681 LACNIC Region transit ASes present in the Internet Routing Table: 2566 Average LACNIC Region AS path length visible: 5.4 Max LACNIC Region AS path length visible: 68 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9368 Number of LACNIC addresses announced to Internet: 170406656 Equivalent to 10 /8s, 40 /16s and 51 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-275868 + ERX transfers LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8, 191/8, 200/8, 201/8, AfriNIC Region Analysis Summary ------------------------------- Prefixes being announced by AfriNIC Region ASes: 36847 Total AfriNIC prefixes after maximum aggregation: 6943 AfriNIC Deaggregation factor: 5.31 Prefixes being announced from the AfriNIC address blocks: 53273 Unique aggregates announced from the AfriNIC address blocks: 19483 AfriNIC Region origin ASes present in the Internet Routing Table: 2013 AfriNIC Prefixes per ASN: 26.46 AfriNIC Region origin ASes announcing only one prefix: 734 AfriNIC Region transit ASes present in the Internet Routing Table: 385 Average AfriNIC Region AS path length visible: 5.3 Max AfriNIC Region AS path length visible: 70 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1379 Number of AfriNIC addresses announced to Internet: 103147520 Equivalent to 6 /8s, 37 /16s and 232 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers AfriNIC Address Blocks 41/8, 102/8, 105/8, 154/8, 196/8, 197/8, APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 9808 13730 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 5973 830 523 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4845 548 320 BBIL-AP BHARTI Airtel Ltd., IN 18403 4602 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 4021 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3671 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3468 887 177 CMNET-JIANGSU-AP China Mobile communicati 45899 3336 1868 99 VNPT-AS-VN VNPT Corp, VN 24560 3003 865 512 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2809 177 546 LCS-AS-AP LARUS Limited, HK Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14448 41233 5553 AMAZON-02 - Amazon.com, Inc., US 22773 4778 3101 367 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4647 308 1020 CABLEONE - CABLE ONE, INC., US 7155 3861 286 85 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3708 1321 75 SHAW - Shaw Communications, CA 396982 3292 4856 487 GOOGLE-CLOUD-PLATFORM - Google LLC, US 174 3242 8767 854 COGENT-174 - Cogent Communications, LLC, 749 3140 54728 2391 DNIC-AS-00749 - United States Department 36352 2699 221 891 AS-COLOCROSSING - HostPapa, US 16625 2697 1176 2094 AKAMAI-AS - Akamai Technologies, Inc., US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12479 7204 1711 149 UNI2-AS, ES 39891 4969 306 72 ALJAWWALSTC-AS, SA 9009 3827 355 2246 M247, RO 20940 3825 3393 112 AKAMAI-ASN1, NL 12389 3144 2319 868 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2669 193 1956 CDNEXT, GB 34984 2463 366 569 TELLCOM-AS, TR 8452 1688 1852 14 TE-AS TE-AS, EG 13188 1607 100 27 TRIOLAN, UA 203020 1604 243 787 HOSTROYALE, IN Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 12797 3302 594 UNINET, MX 10620 3453 458 1104 Telmex Colombia S.A., CO 13999 2454 506 346 Mega Cable, S.A. de C.V., MX 11830 1956 369 65 Instituto Costarricense de Electricidad y 11664 1453 278 33 Techtel LMDS Comunicaciones Interactivas 28573 1371 2430 272 Claro NXT Telecomunicacoes Ltda, BR 3816 1342 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1244 371 22 INTEGRATEL PERU S.A.A., PE 26615 1057 2475 94 TIM SA, BR 22884 1055 66 357 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24835 2044 648 34 RAYA-AS, EG 36992 1845 1531 336 ETISALAT-MISR, EG 24863 1289 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 36935 1229 521 44 Vodafone-, EG 37069 1109 1100 11 MOBINIL, EG 29571 1072 78 20 ORANGE-COTE-IVOIRE, CI 20011 580 154 212 NTT-DATA-Inc, ZA 36914 559 82 3 KENET-AS, KE 15399 533 55 50 WANANCHI-, KE Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14448 41233 5553 AMAZON-02 - Amazon.com, Inc., US 9808 13730 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12797 3302 594 UNINET, MX 12479 7204 1711 149 UNI2-AS, ES 7545 5973 830 523 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 306 72 ALJAWWALSTC-AS, SA 9498 4845 548 320 BBIL-AP BHARTI Airtel Ltd., IN 22773 4778 3101 367 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4647 308 1020 CABLEONE - CABLE ONE, INC., US 18403 4602 347 25 FPT-AS-AP FPT Telecom Company, VN Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 13730 13610 CHINAMOBILE-CN China Mobile Communications Grou 8151 12797 12203 UNINET, MX 12479 7204 7055 UNI2-AS, ES 7545 5973 5450 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 4897 ALJAWWALSTC-AS, SA 18403 4602 4577 FPT-AS-AP FPT Telecom Company, VN 9498 4845 4525 BBIL-AP BHARTI Airtel Ltd., IN 22773 4778 4411 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4021 3992 VIETEL-AS-AP Viettel Group, VN 7155 3861 3776 VIASAT-SP-BACKBONE - ViaSat,Inc., US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 393266 UNALLOCATED 8.23.52.0/24 46887 CROWNCASTLE-AS46887 - C 396894 UNALLOCATED 8.28.201.0/24 3356 LEVEL3 - Level 3 Parent 13450 UNALLOCATED 8.29.117.0/24 55002 DEFENSE-NET - F5, Inc., 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE - Phonos 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3 - Level 3 Parent 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3 - Level 3 Parent 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174 - Cogent Com 26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI 396831 UNALLOCATED 12.23.198.0/24 7018 ATT-INTERNET4 - AT&T En 397665 UNALLOCATED 12.24.28.0/24 7018 ATT-INTERNET4 - AT&T En Complete listing at https://bgp.nsrc.org/REN/Singapore/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.137.48.0/24 Origin: 16904 ARVIG-16904 - Arvig Enterprises Inc., US 23.137.48.0/24 Transit: 174 COGENT-174 - Cogent Communications, LLC, 23.137.200.0/24 Origin: 16276 OVH, FR 23.137.200.0/24 Transit: 174 COGENT-174 - Cogent Communications, LLC, 23.140.216.0/24 Origin: 27176 DATAWAGON - DataWagon LLC, US 23.140.216.0/24 Transit: 20278 NEXEON - Nexeon Technologies, Inc., US 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS - Charter Communicat 23.142.24.0/24 Origin: 62164 HEYMMAN-2, CA 23.142.24.0/24 Transit: 64236 UNREAL-SERVERS - UnReal Servers, LLC, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:16 /9:14 /10:40 /11:95 /12:298 /13:581 /14:1190 /15:2096 /16:13611 /17:8229 /18:13295 /19:25300 /20:45511 /21:52159 /22:113472 /23:106910 /24:651097 /25:0 /26:0 /27:0 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 8151 6960 12797 UNINET, MX 12479 6141 7204 UNI2-AS, ES 39891 3655 4969 ALJAWWALSTC-AS, SA 11492 3507 4647 CABLEONE - CABLE ONE, INC., US 6327 3488 3708 SHAW - Shaw Communications, CA 22773 3046 4778 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2820 3861 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2583 14448 AMAZON-02 - Amazon.com, Inc., US 30036 2316 2664 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US 10620 2233 3453 Telmex Colombia S.A., CO Complete listing at https://bgp.nsrc.org/REN/Singapore/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2491 2:1589 3:996 4:5 5:5194 6:196 7:6 8:1499 9:29 11:172 12:1194 13:641 14:2663 15:459 16:167 17:395 18:917 20:603 21:4 22:188 23:8126 24:2827 25:2 27:2819 29:19 31:3415 32:30 34:90 35:291 36:4630 37:4453 38:9897 39:1267 40:270 41:4544 42:2097 43:3032 44:444 45:19956 46:4897 47:407 48:89 49:2191 50:2071 51:602 52:1307 54:279 55:1046 56:11 57:317 58:2366 59:1362 60:1174 61:3111 62:3116 63:1755 64:6253 65:2116 66:6004 67:3259 68:1500 69:4215 70:1046 71:612 72:3115 74:2984 75:1496 76:592 77:2842 78:1910 79:1794 80:2336 81:2210 82:4013 83:1442 84:2042 85:3816 86:1102 87:2271 88:1352 89:4700 90:797 91:8435 92:2834 93:3006 94:4305 95:4622 96:1438 97:312 98:947 99:802 100:68 101:1606 102:4478 103:33005 104:5473 105:791 106:924 107:2859 108:1210 109:4222 110:2298 111:4065 112:3150 113:1981 114:2181 115:2286 116:2182 117:3430 118:3007 119:2062 120:2682 121:1507 122:2979 123:2247 124:1690 125:3002 126:125 128:1658 129:930 130:1592 131:2466 132:793 133:463 134:1644 135:586 136:1597 137:1359 138:3152 139:1638 140:1784 141:1589 142:2538 143:2144 144:1736 145:628 146:2191 147:2153 148:2756 149:3059 150:1342 151:2700 152:2249 153:949 154:9535 155:2314 156:4386 157:2266 158:1500 159:2771 160:3836 161:1944 162:4019 163:2391 164:2036 165:2629 166:1300 167:2251 168:3991 169:887 170:5555 171:1105 172:4584 173:3460 174:884 175:1368 176:3826 177:4907 178:4328 179:2298 180:3142 181:4452 182:4010 183:2825 184:2015 185:21750 186:5714 187:4998 188:4563 189:4505 190:9738 191:1589 192:11447 193:9592 194:7840 195:5716 196:3316 197:3322 198:6097 199:6108 200:8067 201:6401 202:10662 203:10618 204:4720 205:3722 206:4478 207:3867 208:4369 209:5373 210:4727 211:2685 212:4992 213:4085 214:1048 215:46 216:7264 217:3544 218:1678 219:420 220:2199 221:1312 222:936 223:3330 End of report