IPv4 R&E Routing Table Report 23:00 GMT Wed 20 May, 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: 1047140 Prefixes after maximum aggregation (per Origin AS): 401569 Deaggregation factor: 2.61 Unique aggregates announced (without unneeded subnets): 517567 Number of IPv4 prefixes with a valid ROA: 654938 Number of IPv4 prefixes with an invalid ROA: 481 Number of IPv4 prefixes with no ROA: 391721 Total ASes present in the Internet Routing Table: 78401 Prefixes per ASN: 13.36 Origin-only ASes present in the Internet Routing Table: 67192 Origin ASes announcing only one prefix: 27371 Transit ASes present in the Internet Routing Table: 11209 Transit-only ASes present in the Internet Routing Table: 591 Paths with bogon ASNs present in the IPv4 Routing Table: 43 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 216 Max AS path prepend of ASN (205624) 211 Prefixes from unregistered ASNs in the Routing Table: 1162 Number of instances of unregistered ASNs: 1192 Number of 32-bit ASNs allocated by the RIRs: 49818 Number of 32-bit ASNs visible in the Routing Table: 40612 Prefixes from 32-bit ASNs in the Routing Table: 230692 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: 436 Number of addresses announced to Internet: 3103335680 Equivalent to 184 /8s, 249 /16s and 37 /24s Percentage of available address space announced: 83.8 Percentage of allocated address space announced: 83.8 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: 342609 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 285981 Total APNIC prefixes after maximum aggregation: 82935 APNIC Deaggregation factor: 3.45 Prefixes being announced from the APNIC address blocks: 272333 Unique aggregates announced from the APNIC address blocks: 107960 APNIC Region origin ASes present in the Internet Routing Table: 15175 APNIC Prefixes per ASN: 17.95 APNIC Region origin ASes announcing only one prefix: 4596 APNIC Region transit ASes present in the Internet Routing Table: 2043 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 36 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10778 Number of APNIC addresses announced to Internet: 747696128 Equivalent to 44 /8s, 144 /16s and 240 /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: 302565 Total ARIN prefixes after maximum aggregation: 136656 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 301495 Unique aggregates announced from the ARIN address blocks: 147721 ARIN Region origin ASes present in the Internet Routing Table: 19389 ARIN Prefixes per ASN: 15.55 ARIN Region origin ASes announcing only one prefix: 7106 ARIN Region transit ASes present in the Internet Routing Table: 1894 Average ARIN Region AS path length visible: 4.3 Max ARIN Region AS path length visible: 216 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5576 Number of ARIN addresses announced to Internet: 1347594496 Equivalent to 80 /8s, 82 /16s and 169 /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, 393216-404380 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: 290199 Total RIPE prefixes after maximum aggregation: 143458 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 293702 Unique aggregates announced from the RIPE address blocks: 191741 RIPE Region origin ASes present in the Internet Routing Table: 29483 RIPE Prefixes per ASN: 9.96 RIPE Region origin ASes announcing only one prefix: 12224 RIPE Region transit ASes present in the Internet Routing Table: 4093 Average RIPE Region AS path length visible: 5.0 Max RIPE Region AS path length visible: 35 Number of RIPE region 32-bit ASNs visible in the Routing Table: 13419 Number of RIPE addresses announced to Internet: 733927168 Equivalent to 43 /8s, 190 /16s and 215 /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: 129753 Total LACNIC prefixes after maximum aggregation: 30812 LACNIC Deaggregation factor: 4.21 Prefixes being announced from the LACNIC address blocks: 124183 Unique aggregates announced from the LACNIC address blocks: 50326 LACNIC Region origin ASes present in the Internet Routing Table: 11394 LACNIC Prefixes per ASN: 10.90 LACNIC Region origin ASes announcing only one prefix: 2710 LACNIC Region transit ASes present in the Internet Routing Table: 2592 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: 9444 Number of LACNIC addresses announced to Internet: 169709056 Equivalent to 10 /8s, 29 /16s and 142 /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: 37480 Total AfriNIC prefixes after maximum aggregation: 7038 AfriNIC Deaggregation factor: 5.33 Prefixes being announced from the AfriNIC address blocks: 54991 Unique aggregates announced from the AfriNIC address blocks: 19446 AfriNIC Region origin ASes present in the Internet Routing Table: 2028 AfriNIC Prefixes per ASN: 27.12 AfriNIC Region origin ASes announcing only one prefix: 735 AfriNIC Region transit ASes present in the Internet Routing Table: 390 Average AfriNIC Region AS path length visible: 5.2 Max AfriNIC Region AS path length visible: 70 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1395 Number of AfriNIC addresses announced to Internet: 104211968 Equivalent to 6 /8s, 54 /16s and 38 /24s AfriNIC AS Blocks 36864-37887, 327680-330751 & 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 13908 8761 121 CHINAMOBILE-CN China Mobile Communication 7545 5879 825 479 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4939 552 330 BBIL-AP BHARTI Airtel Ltd., IN 18403 4534 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 4064 1331 26 VIETEL-AS-AP Viettel Group, VN 7713 3723 1044 64 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3544 887 177 CMNET-JIANGSU-AP China Mobile communicati 17561 3444 217 599 LCS-AS-AP LARUS Limited, HK 45899 3377 1868 100 VNPT-AS-VN VNPT Corp, VN 24560 2737 744 736 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 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 15017 41329 5699 AMAZON-02 - Amazon.com, Inc., US 22773 4766 3114 364 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4592 305 1088 CABLEONE - CABLE ONE, INC., US 7155 3870 286 90 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3717 1305 75 SHAW - Shaw Communications, CA 396982 3349 4865 508 GOOGLE-CLOUD-PLATFORM - Google LLC, US 749 3137 54728 2388 DNIC-AS-00749 - United States Department 36352 2915 222 914 AS-COLOCROSSING - HostPapa, US 7029 2634 2558 886 WINDSTREAM - Windstream Communications LL 30036 2579 357 532 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom C 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 7134 1711 149 UNI2-AS, ES 39891 4975 307 72 ALJAWWALSTC-AS, SA 9009 3939 363 2344 M247, RO 20940 3794 3389 109 AKAMAI-ASN1, NL 12389 3139 2321 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2795 206 2063 CDNEXT, GB 34984 2490 367 583 TELLCOM-AS, TR 8452 1711 1852 14 TE-AS TE-AS, EG 203020 1653 252 829 HOSTROYALE, IN 13188 1607 100 27 TRIOLAN, UA 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 12747 3254 632 UNINET, MX 10620 3434 450 1103 Telmex Colombia S.A., CO 13999 2362 501 356 Mega Cable, S.A. de C.V., MX 11830 1936 369 65 Instituto Costarricense de Electricidad y 11664 1470 277 34 Techtel LMDS Comunicaciones Interactivas 28573 1364 2431 268 Claro NXT Telecomunicacoes Ltda, BR 3816 1342 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1223 371 22 INTEGRATEL PERU S.A.A., PE 22884 1076 70 363 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1075 2392 100 TIM SA, BR 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 2028 649 36 RAYA-AS, EG 36992 1860 1532 337 ETISALAT-MISR, EG 36935 1292 523 45 Vodafone-, EG 24863 1267 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 37069 1117 1100 11 MOBINIL, EG 29571 1086 70 18 ORANGE-COTE-IVOIRE, CI 328608 627 57 174 Africa-on-Cloud-AS, ZA 20011 589 155 220 NTT-DATA-Inc, ZA 36914 554 82 3 KENET-AS, 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 15017 41329 5699 AMAZON-02 - Amazon.com, Inc., US 9808 13908 8761 121 CHINAMOBILE-CN China Mobile Communication 8151 12747 3254 632 UNINET, MX 12479 7134 1711 149 UNI2-AS, ES 7545 5879 825 479 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4975 307 72 ALJAWWALSTC-AS, SA 9498 4939 552 330 BBIL-AP BHARTI Airtel Ltd., IN 22773 4766 3114 364 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4592 305 1088 CABLEONE - CABLE ONE, INC., US 18403 4534 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 13908 13787 CHINAMOBILE-CN China Mobile Communications Grou 8151 12747 12115 UNINET, MX 12479 7134 6985 UNI2-AS, ES 7545 5879 5400 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4975 4903 ALJAWWALSTC-AS, SA 9498 4939 4609 BBIL-AP BHARTI Airtel Ltd., IN 18403 4534 4509 FPT-AS-AP FPT Telecom Company, VN 22773 4766 4402 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4064 4038 VIETEL-AS-AP Viettel Group, VN 7155 3870 3780 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 46198 UNALLOCATED 8.10.6.0/24 23520 LIBERTY-NETWORKS - Colu 46198 UNALLOCATED 8.10.7.0/24 23520 LIBERTY-NETWORKS - Colu 395729 UNALLOCATED 8.28.58.0/24 32787 PROLEXIC-TECHNOLOGIES-D 395729 UNALLOCATED 8.28.60.0/24 32787 PROLEXIC-TECHNOLOGIES-D 396894 UNALLOCATED 8.28.201.0/24 3356 LEVEL3 - Level 3 Parent 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE - Phonos 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3 - Level 3 Parent 400273 UNALLOCATED 8.41.137.0/24 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 Complete listing at https://bgp.nsrc.org/REN/Singapore/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.131.100.0/24 Origin: 401541 OSIE - Osie, ZZ 23.131.100.0/24 Transit: 38733 CMCTELECOM-VN CMC Telecom Infrastructure 23.131.156.0/24 Origin: 401541 OSIE - Osie, ZZ 23.131.156.0/24 Transit: 38733 CMCTELECOM-VN CMC Telecom Infrastructure 23.131.212.0/24 Origin: 401541 OSIE - Osie, ZZ 23.131.212.0/24 Transit: 38733 CMCTELECOM-VN CMC Telecom Infrastructure 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: 5511 OPENTRANSIT, FR 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 /10:39 /11:95 /12:297 /13:580 /14:1184 /15:2100 /16:13569 /17:8230 /18:13276 /19:25408 /20:45711 /21:52337 /22:113384 /23:108307 /24:662593 /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 6969 12747 UNINET, MX 12479 6070 7134 UNI2-AS, ES 39891 3660 4975 ALJAWWALSTC-AS, SA 6327 3498 3717 SHAW - Shaw Communications, CA 11492 3468 4592 CABLEONE - CABLE ONE, INC., US 22773 3062 4766 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2825 3870 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2712 15017 AMAZON-02 - Amazon.com, Inc., US 10620 2238 3434 Telmex Colombia S.A., CO 30036 2234 2579 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2503 2:2043 3:1000 4:5 5:5197 6:201 7:6 8:1472 9:59 11:172 12:1141 13:724 14:2717 15:467 16:215 17:443 18:920 20:592 21:4 22:188 23:8300 24:2775 25:2 27:2808 28:1 29:19 31:3574 32:36 34:91 35:284 36:4803 37:4438 38:9718 39:1297 40:412 41:4570 42:2183 43:3207 44:454 45:19840 46:4884 47:437 48:151 49:2362 50:2011 51:768 52:1332 54:289 55:1108 56:11 57:323 58:2367 59:1390 60:1175 61:3198 62:3130 63:1681 64:6377 65:2154 66:6112 67:3272 68:1515 69:4224 70:1062 71:608 72:3183 74:3057 75:1500 76:598 77:2945 78:2042 79:1789 80:2348 81:2253 82:4150 83:1457 84:2156 85:3855 86:1096 87:2574 88:1321 89:4779 90:795 91:8465 92:2785 93:3025 94:4413 95:4698 96:1444 97:306 98:946 99:837 100:70 101:1627 102:4615 103:33036 104:5375 105:851 106:919 107:2943 108:1273 109:4273 110:2291 111:4124 112:3160 113:2008 114:2387 115:2314 116:2093 117:3487 118:3044 119:2099 120:2736 121:1545 122:3018 123:2284 124:1710 125:3032 126:158 128:1563 129:963 130:1666 131:2428 132:880 133:486 134:1721 135:615 136:1462 137:1364 138:3405 139:1700 140:1839 141:1754 142:2554 143:2042 144:1789 145:635 146:2182 147:2248 148:2765 149:3163 150:1389 151:2928 152:2579 153:1628 154:9606 155:2289 156:5131 157:2502 158:1578 159:2871 160:3847 161:1988 162:4096 163:2589 164:2458 165:2682 166:1265 167:2320 168:4073 169:868 170:5622 171:1136 172:4784 173:3454 174:885 175:1368 176:3954 177:5045 178:4403 179:2387 180:3201 181:4578 182:4043 183:2840 184:2018 185:21840 186:6203 187:5043 188:4521 189:4527 190:9887 191:2002 192:11503 193:9606 194:7872 195:5816 196:3398 197:3333 198:6117 199:6057 200:8133 201:6429 202:10681 203:10646 204:4768 205:3688 206:4374 207:3835 208:4357 209:5433 210:4741 211:2691 212:5076 213:4103 214:1041 215:47 216:7299 217:3611 218:1800 219:415 220:2222 221:1348 222:937 223:3453 End of report