IPv4 R&E Routing Table Report 23:00 GMT Mon 19 Jan, 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: 1024171 Prefixes after maximum aggregation (per Origin AS): 394755 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 506959 Number of IPv4 prefixes with a valid ROA: 610906 Number of IPv4 prefixes with an invalid ROA: 589 Number of IPv4 prefixes with no ROA: 412676 Total ASes present in the Internet Routing Table: 77710 Prefixes per ASN: 13.18 Origin-only ASes present in the Internet Routing Table: 66609 Origin ASes announcing only one prefix: 27162 Transit ASes present in the Internet Routing Table: 11101 Transit-only ASes present in the Internet Routing Table: 567 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: 209 Max AS path prepend of ASN (214570) 200 Prefixes from unregistered ASNs in the Routing Table: 1018 Number of instances of unregistered ASNs: 1048 Number of 32-bit ASNs allocated by the RIRs: 48432 Number of 32-bit ASNs visible in the Routing Table: 39624 Prefixes from 32-bit ASNs in the Routing Table: 220699 Number of bogon 32-bit ASNs visible in the Routing Table: 74 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 466 Number of addresses announced to Internet: 3105777408 Equivalent to 185 /8s, 30 /16s and 103 /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: 334057 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 279730 Total APNIC prefixes after maximum aggregation: 81723 APNIC Deaggregation factor: 3.42 Prefixes being announced from the APNIC address blocks: 266309 Unique aggregates announced from the APNIC address blocks: 106871 APNIC Region origin ASes present in the Internet Routing Table: 14976 APNIC Prefixes per ASN: 17.78 APNIC Region origin ASes announcing only one prefix: 4554 APNIC Region transit ASes present in the Internet Routing Table: 2004 Average APNIC Region AS path length visible: 4.7 Max APNIC Region AS path length visible: 37 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10557 Number of APNIC addresses announced to Internet: 753622016 Equivalent to 44 /8s, 235 /16s and 92 /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: 298959 Total ARIN prefixes after maximum aggregation: 134810 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 299405 Unique aggregates announced from the ARIN address blocks: 146077 ARIN Region origin ASes present in the Internet Routing Table: 19368 ARIN Prefixes per ASN: 15.46 ARIN Region origin ASes announcing only one prefix: 7071 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: 28 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5440 Number of ARIN addresses announced to Internet: 1344499456 Equivalent to 80 /8s, 35 /16s and 111 /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: 282376 Total RIPE prefixes after maximum aggregation: 139886 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 284125 Unique aggregates announced from the RIPE address blocks: 184639 RIPE Region origin ASes present in the Internet Routing Table: 29122 RIPE Prefixes per ASN: 9.76 RIPE Region origin ASes announcing only one prefix: 12103 RIPE Region transit ASes present in the Internet Routing Table: 4042 Average RIPE Region AS path length visible: 5.0 Max RIPE Region AS path length visible: 209 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12913 Number of RIPE addresses announced to Internet: 733686528 Equivalent to 43 /8s, 187 /16s and 43 /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: 125711 Total LACNIC prefixes after maximum aggregation: 30742 LACNIC Deaggregation factor: 4.09 Prefixes being announced from the LACNIC address blocks: 121558 Unique aggregates announced from the LACNIC address blocks: 49699 LACNIC Region origin ASes present in the Internet Routing Table: 11340 LACNIC Prefixes per ASN: 10.72 LACNIC Region origin ASes announcing only one prefix: 2687 LACNIC Region transit ASes present in the Internet Routing Table: 2541 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: 9339 Number of LACNIC addresses announced to Internet: 170529536 Equivalent to 10 /8s, 42 /16s and 19 /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: 36377 Total AfriNIC prefixes after maximum aggregation: 6906 AfriNIC Deaggregation factor: 5.27 Prefixes being announced from the AfriNIC address blocks: 52308 Unique aggregates announced from the AfriNIC address blocks: 19278 AfriNIC Region origin ASes present in the Internet Routing Table: 2009 AfriNIC Prefixes per ASN: 26.04 AfriNIC Region origin ASes announcing only one prefix: 747 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: 58 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1375 Number of AfriNIC addresses announced to Internet: 103156480 Equivalent to 6 /8s, 38 /16s and 11 /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 13504 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6027 833 573 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4695 543 340 BBIL-AP BHARTI Airtel Ltd., IN 18403 4426 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4052 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3729 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3419 832 183 CMNET-JIANGSU-AP China Mobile communicati 45899 3328 1868 98 VNPT-AS-VN VNPT Corp, VN 24560 2957 864 504 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2800 176 551 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 13996 38703 5427 AMAZON-02, US 22773 4666 3092 363 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4635 308 1031 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3698 1321 70 SHAW, CA 396982 3327 4868 498 GOOGLE-CLOUD-PLATFORM, US 174 3178 8768 839 COGENT-174, US 749 3145 54729 2396 DNIC-AS-00749, US 16625 2820 1209 2120 AKAMAI-AS, US 36352 2706 222 890 AS-COLOCROSSING, 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 7247 1711 149 UNI2-AS, ES 39891 4969 306 72 ALJAWWALSTC-AS, SA 9009 3902 365 2230 M247, RO 20940 3830 3393 110 AKAMAI-ASN1, NL 12389 3149 2317 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2574 183 1871 CDNEXT, GB 34984 2426 372 578 TELLCOM-AS, TR 8452 1715 1852 14 TE-AS TE-AS, EG 203020 1611 243 786 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 12685 3300 603 UNINET, MX 10620 3441 457 1108 Telmex Colombia S.A., CO 13999 2486 508 351 Mega Cable, S.A. de C.V., MX 11830 1991 369 65 Instituto Costarricense de Electricidad y 28573 1375 2430 272 Claro NXT Telecomunicacoes Ltda, BR 3816 1339 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1258 371 22 Telefonica del Peru S.A.A., PE 22884 1056 67 358 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1016 2486 56 TIM SA, BR 18881 905 1127 31 TELEFONICA BRASIL S.A, 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 1982 638 33 RAYA-AS, EG 36992 1841 1532 339 ETISALAT-MISR, EG 24863 1283 389 16 LINKdotNET-AS, EG 36903 1232 555 98 MT-MPLS, MA 36935 1144 522 45 Vodafone-, EG 37069 1101 1096 13 MOBINIL, EG 29571 1070 78 20 ORANGE-COTE-IVOIRE, CI 20011 580 154 212 NTT-DATA-Inc, ZA 36914 569 82 3 KENET-AS, KE 328608 561 48 172 Africa-on-Cloud-AS, ZA 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 13996 38703 5427 AMAZON-02, US 9808 13504 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12685 3300 603 UNINET, MX 12479 7247 1711 149 UNI2-AS, ES 7545 6027 833 573 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 306 72 ALJAWWALSTC-AS, SA 9498 4695 543 340 BBIL-AP BHARTI Airtel Ltd., IN 22773 4666 3092 363 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4635 308 1031 CABLEONE, US 18403 4426 347 24 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 13504 13384 CHINAMOBILE-CN China Mobile Communications Grou 8151 12685 12082 UNINET, MX 12479 7247 7098 UNI2-AS, ES 7545 6027 5454 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4969 4897 ALJAWWALSTC-AS, SA 18403 4426 4402 FPT-AS-AP FPT Telecom Company, VN 9498 4695 4355 BBIL-AP BHARTI Airtel Ltd., IN 22773 4666 4303 ASN-CXA-ALL-CCI-22773-RDC, US 7552 4052 4023 VIETEL-AS-AP Viettel Group, VN 7155 3861 3776 VIASAT-SP-BACKBONE, 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, US 396894 UNALLOCATED 8.28.201.0/24 3356 LEVEL3, US 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE, US 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174, US 26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI 396831 UNALLOCATED 12.23.198.0/24 7018 ATT-INTERNET4, US 395476 UNALLOCATED 12.36.194.0/24 7018 ATT-INTERNET4, US 395476 UNALLOCATED 12.36.195.0/24 3356 LEVEL3, US 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, US 23.137.48.0/24 Transit: 174 COGENT-174, US 23.137.200.0/24 Origin: 16276 OVH, FR 23.137.200.0/24 Transit: 174 COGENT-174, US 23.140.216.0/24 Origin: 27176 DATAWAGON, US 23.140.216.0/24 Transit: 20278 NEXEON, US 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS, US 23.142.24.0/24 Origin: 62164 HEYMMAN-2, CA 23.142.24.0/24 Transit: 64236 UNREAL-SERVERS, 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 /11:93 /12:302 /13:578 /14:1198 /15:2088 /16:13665 /17:8178 /18:13455 /19:24728 /20:44714 /21:51991 /22:113203 /23:105887 /24:644021 /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 6866 12685 UNINET, MX 12479 6178 7247 UNI2-AS, ES 39891 3655 4969 ALJAWWALSTC-AS, SA 11492 3497 4635 CABLEONE, US 6327 3479 3698 SHAW, CA 22773 3048 4666 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2476 13996 AMAZON-02, US 30036 2312 2654 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2221 3441 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) ---------------------------------------------- 1:2497 2:1513 3:979 4:9 5:4999 6:184 7:6 8:1490 9:14 11:172 12:1227 13:610 14:2639 15:414 16:179 17:389 18:916 20:596 21:4 22:188 23:8122 24:2622 25:2 27:2815 29:19 31:3428 32:31 34:84 35:290 36:4632 37:4523 38:9897 39:1245 40:439 41:4474 42:1964 43:2991 44:414 45:19575 46:4940 47:402 48:20 49:2196 50:2064 51:598 52:1254 54:235 55:1046 56:11 57:308 58:2339 59:1364 60:1171 61:3126 62:3069 63:1766 64:6164 65:2135 66:5991 67:3259 68:1492 69:4205 70:1030 71:617 72:3063 74:2942 75:1513 76:606 77:2756 78:1921 79:1801 80:2297 81:2120 82:4005 83:1473 84:2019 85:3672 86:1095 87:2208 88:1344 89:4638 90:829 91:8400 92:2850 93:3007 94:4278 95:4516 96:1447 97:312 98:956 99:782 100:69 101:1581 102:4359 103:32934 104:5437 105:790 106:907 107:2820 108:1220 109:4228 110:2311 111:4047 112:3079 113:1974 114:2165 115:2266 116:2174 117:3287 118:2981 119:2116 120:2582 121:1508 122:2956 123:2297 124:1652 125:2974 126:125 128:1579 129:939 130:1543 131:2284 132:768 133:461 134:1621 135:534 136:1628 137:1276 138:2989 139:1605 140:1763 141:1562 142:2466 143:2130 144:1553 145:630 146:2192 147:2275 148:2819 149:2912 150:1326 151:2600 152:2270 153:846 154:9217 155:2282 156:4378 157:2253 158:1494 159:2743 160:3646 161:2000 162:4014 163:2329 164:1972 165:2652 166:1302 167:2196 168:3915 169:856 170:5446 171:1118 172:4548 173:3427 174:892 175:1357 176:3773 177:4713 178:4272 179:2289 180:3116 181:4364 182:3890 183:2746 184:2023 185:21645 186:5526 187:4815 188:4624 189:4487 190:9685 191:1516 192:11423 193:9494 194:7839 195:5676 196:3245 197:3263 198:6073 199:6118 200:8053 201:6372 202:10599 203:10597 204:4668 205:3687 206:4340 207:3804 208:4365 209:5438 210:4731 211:2686 212:4953 213:4036 214:1058 215:54 216:7127 217:3449 218:1621 219:421 220:2192 221:1307 222:876 223:3281 End of report