IPv4 R&E Routing Table Report 23:00 GMT Mon 16 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: 1034387 Prefixes after maximum aggregation (per Origin AS): 397878 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 511887 Number of IPv4 prefixes with a valid ROA: 624111 Number of IPv4 prefixes with an invalid ROA: 515 Number of IPv4 prefixes with no ROA: 409761 Total ASes present in the Internet Routing Table: 78028 Prefixes per ASN: 13.26 Origin-only ASes present in the Internet Routing Table: 66867 Origin ASes announcing only one prefix: 27239 Transit ASes present in the Internet Routing Table: 11161 Transit-only ASes present in the Internet Routing Table: 586 Paths with bogon ASNs present in the IPv4 Routing Table: 41 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: 1086 Number of instances of unregistered ASNs: 1118 Number of 32-bit ASNs allocated by the RIRs: 48981 Number of 32-bit ASNs visible in the Routing Table: 40079 Prefixes from 32-bit ASNs in the Routing Table: 224832 Number of bogon 32-bit ASNs visible in the Routing Table: 84 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 403 Number of addresses announced to Internet: 3107124480 Equivalent to 185 /8s, 50 /16s and 245 /24s Percentage of available address space announced: 83.9 Percentage of allocated address space announced: 83.9 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: 337140 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 281213 Total APNIC prefixes after maximum aggregation: 81754 APNIC Deaggregation factor: 3.44 Prefixes being announced from the APNIC address blocks: 268446 Unique aggregates announced from the APNIC address blocks: 107216 APNIC Region origin ASes present in the Internet Routing Table: 15100 APNIC Prefixes per ASN: 17.78 APNIC Region origin ASes announcing only one prefix: 4601 APNIC Region transit ASes present in the Internet Routing Table: 2036 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: 10674 Number of APNIC addresses announced to Internet: 751873280 Equivalent to 44 /8s, 208 /16s and 173 /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: 303135 Total ARIN prefixes after maximum aggregation: 136892 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 301861 Unique aggregates announced from the ARIN address blocks: 147134 ARIN Region origin ASes present in the Internet Routing Table: 19373 ARIN Prefixes per ASN: 15.58 ARIN Region origin ASes announcing only one prefix: 7080 ARIN Region transit ASes present in the Internet Routing Table: 1924 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: 5509 Number of ARIN addresses announced to Internet: 1349091072 Equivalent to 80 /8s, 105 /16s and 127 /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: 285041 Total RIPE prefixes after maximum aggregation: 140949 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 287620 Unique aggregates announced from the RIPE address blocks: 187459 RIPE Region origin ASes present in the Internet Routing Table: 29291 RIPE Prefixes per ASN: 9.82 RIPE Region origin ASes announcing only one prefix: 12151 RIPE Region transit ASes present in the Internet Routing Table: 4060 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: 13155 Number of RIPE addresses announced to Internet: 732291840 Equivalent to 43 /8s, 165 /16s and 227 /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: 127069 Total LACNIC prefixes after maximum aggregation: 30661 LACNIC Deaggregation factor: 4.14 Prefixes being announced from the LACNIC address blocks: 122613 Unique aggregates announced from the LACNIC address blocks: 50232 LACNIC Region origin ASes present in the Internet Routing Table: 11348 LACNIC Prefixes per ASN: 10.80 LACNIC Region origin ASes announcing only one prefix: 2676 LACNIC Region transit ASes present in the Internet Routing Table: 2551 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: 9366 Number of LACNIC addresses announced to Internet: 170347008 Equivalent to 10 /8s, 39 /16s and 74 /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: 36843 Total AfriNIC prefixes after maximum aggregation: 6928 AfriNIC Deaggregation factor: 5.32 Prefixes being announced from the AfriNIC address blocks: 53444 Unique aggregates announced from the AfriNIC address blocks: 19495 AfriNIC Region origin ASes present in the Internet Routing Table: 2007 AfriNIC Prefixes per ASN: 26.63 AfriNIC Region origin ASes announcing only one prefix: 731 AfriNIC Region transit ASes present in the Internet Routing Table: 380 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: 1375 Number of AfriNIC addresses announced to Internet: 103327232 Equivalent to 6 /8s, 40 /16s and 166 /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 13738 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 5970 830 520 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4846 548 320 BBIL-AP BHARTI Airtel Ltd., IN 18403 4585 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 4033 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3673 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3478 887 177 CMNET-JIANGSU-AP China Mobile communicati 45899 3336 1868 99 VNPT-AS-VN VNPT Corp, VN 24560 3009 865 515 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2810 177 539 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 14464 41219 5563 AMAZON-02 - Amazon.com, Inc., US 22773 4779 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 3709 1321 75 SHAW - Shaw Communications, CA 396982 3291 4856 485 GOOGLE-CLOUD-PLATFORM - Google LLC, US 174 3240 8766 849 COGENT-174 - Cogent Communications, LLC, 749 3139 54728 2390 DNIC-AS-00749 - United States Department 36352 2700 221 893 AS-COLOCROSSING - HostPapa, US 16625 2690 1172 2088 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 7201 1711 149 UNI2-AS, ES 39891 4969 306 72 ALJAWWALSTC-AS, SA 9009 3828 355 2247 M247, RO 20940 3822 3393 109 AKAMAI-ASN1, NL 12389 3148 2319 868 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2670 193 1957 CDNEXT, GB 34984 2462 366 568 TELLCOM-AS, TR 8452 1697 1852 14 TE-AS TE-AS, EG 13188 1607 100 27 TRIOLAN, UA 203020 1606 243 788 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 12808 3302 596 UNINET, MX 10620 3453 458 1104 Telmex Colombia S.A., CO 13999 2455 506 346 Mega Cable, S.A. de C.V., MX 11830 1956 369 65 Instituto Costarricense de Electricidad y 11664 1454 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 1055 2475 94 TIM SA, BR 22884 1054 66 359 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 2045 648 34 RAYA-AS, EG 36992 1843 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 15399 555 57 59 WANANCHI-, KE 37342 525 32 1 MOVITEL, MZ 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 14464 41219 5563 AMAZON-02 - Amazon.com, Inc., US 9808 13738 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12808 3302 596 UNINET, MX 12479 7201 1711 149 UNI2-AS, ES 7545 5970 830 520 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 306 72 ALJAWWALSTC-AS, SA 9498 4846 548 320 BBIL-AP BHARTI Airtel Ltd., IN 22773 4779 3101 367 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4647 308 1020 CABLEONE - CABLE ONE, INC., US 18403 4585 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 13738 13618 CHINAMOBILE-CN China Mobile Communications Grou 8151 12808 12212 UNINET, MX 12479 7201 7052 UNI2-AS, ES 7545 5970 5450 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 4897 ALJAWWALSTC-AS, SA 18403 4585 4560 FPT-AS-AP FPT Telecom Company, VN 9498 4846 4526 BBIL-AP BHARTI Airtel Ltd., IN 22773 4779 4412 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4033 4004 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 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 395476 UNALLOCATED 12.36.194.0/24 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 /12:297 /13:581 /14:1190 /15:2091 /16:13591 /17:8228 /18:13211 /19:25294 /20:45579 /21:52140 /22:113539 /23:107065 /24:651416 /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 6971 12808 UNINET, MX 12479 6138 7201 UNI2-AS, ES 39891 3655 4969 ALJAWWALSTC-AS, SA 11492 3507 4647 CABLEONE - CABLE ONE, INC., US 6327 3489 3709 SHAW - Shaw Communications, CA 22773 3047 4779 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2820 3861 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2585 14464 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) ---------------------------------------------- 1:2490 2:1613 3:1002 4:5 5:5223 6:195 7:6 8:1499 9:29 11:172 12:1193 13:647 14:2670 15:459 16:168 17:421 18:915 20:603 21:4 22:188 23:8190 24:2828 25:2 27:2824 28:1 29:19 31:3409 32:30 34:90 35:291 36:4633 37:4452 38:9941 39:1268 40:409 41:4535 42:2102 43:3042 44:443 45:19947 46:4907 47:408 48:89 49:2191 50:2068 51:603 52:1306 54:279 55:897 56:11 57:315 58:2359 59:1362 60:1174 61:3108 62:3101 63:1750 64:6239 65:2115 66:6008 67:3258 68:1502 69:4218 70:1055 71:613 72:3121 74:2990 75:1499 76:592 77:2874 78:1908 79:1792 80:2333 81:2161 82:3984 83:1442 84:2042 85:3812 86:1103 87:2276 88:1355 89:4687 90:797 91:8422 92:2842 93:3008 94:4306 95:4620 96:1442 97:312 98:947 99:802 100:68 101:1611 102:4465 103:32992 104:5468 105:813 106:924 107:2850 108:1221 109:4212 110:2298 111:4077 112:3152 113:1981 114:2180 115:2279 116:2188 117:3435 118:3002 119:2067 120:2684 121:1508 122:2980 123:2252 124:1666 125:3009 126:125 128:1662 129:959 130:1587 131:2484 132:796 133:463 134:1643 135:591 136:1598 137:1343 138:3177 139:1649 140:1771 141:1590 142:2555 143:2153 144:1743 145:633 146:2195 147:2154 148:2735 149:3061 150:1346 151:2707 152:2241 153:954 154:9517 155:2311 156:4563 157:2270 158:1502 159:2773 160:3842 161:1951 162:4015 163:2404 164:2032 165:2627 166:1288 167:2247 168:3985 169:885 170:5542 171:1091 172:4601 173:3459 174:884 175:1367 176:3829 177:4815 178:4327 179:2326 180:3144 181:4463 182:4012 183:2820 184:2013 185:21780 186:5697 187:4971 188:4564 189:4540 190:9729 191:1572 192:11478 193:9593 194:7822 195:5732 196:3307 197:3296 198:6110 199:6110 200:8085 201:6382 202:10671 203:10641 204:4723 205:3711 206:4480 207:3862 208:4366 209:5393 210:4726 211:2685 212:4982 213:4091 214:1049 215:46 216:7271 217:3538 218:1681 219:420 220:2160 221:1313 222:936 223:3338 End of report