[REN-BGP-stats-all] IPv4 R&E Routing Table Report - CERNET (R&E) view
REN Routing Table Report
cscora at bgp.nsrc.org
Tue Feb 27 20:10:36 UTC 2024
IPv4 R&E Routing Table Report 20:10 GMT Tue 27 Feb, 2024
IPv4 BGP Table (R&E) as seen at CERNET.
Report Website: https://bgp.nsrc.org/REN
Detailed Analysis: https://bgp.nsrc.org/REN/CERNET/
Analysis Summary
----------------
BGP routing table entries examined: 14561
Prefixes after maximum aggregation (per Origin AS): 7600
Deaggregation factor: 1.92
Unique aggregates announced (without unneeded subnets): 8714
Number of IPv4 prefixes with a valid ROA: 4370
Number of IPv4 prefixes with an invalid ROA: 9
Number of IPv4 prefixes with no ROA: 10182
Total ASes present in the Internet Routing Table: 2141
Prefixes per ASN: 6.80
Origin-only ASes present in the Internet Routing Table: 1859
Origin ASes announcing only one prefix: 803
Transit ASes present in the Internet Routing Table: 282
Transit-only ASes present in the Internet Routing Table: 59
Paths with bogon ASNs present in the IPv4 Routing Table: 0
Average AS path length visible in the Internet Routing Table: 4.4
Max AS path length visible: 14
Max AS path prepend of ASN ( 47805) 11
Prefixes from unregistered ASNs in the Routing Table: 13
Number of instances of unregistered ASNs: 13
Number of 32-bit ASNs allocated by the RIRs: 43714
Number of 32-bit ASNs visible in the Routing Table: 495
Prefixes from 32-bit ASNs in the Routing Table: 1654
Number of bogon 32-bit ASNs visible in the Routing Table: 0
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 1
Number of addresses announced to Internet: 147836928
Equivalent to 8 /8s, 207 /16s and 208 /24s
Percentage of available address space announced: 4.0
Percentage of allocated address space announced: 4.0
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: 1602
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 3898
Total APNIC prefixes after maximum aggregation: 2077
APNIC Deaggregation factor: 1.88
Prefixes being announced from the APNIC address blocks: 3899
Unique aggregates announced from the APNIC address blocks: 2471
APNIC Region origin ASes present in the Internet Routing Table: 512
APNIC Prefixes per ASN: 7.62
APNIC Region origin ASes announcing only one prefix: 224
APNIC Region transit ASes present in the Internet Routing Table: 50
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 12
Number of APNIC region 32-bit ASNs visible in the Routing Table: 199
Number of APNIC addresses announced to Internet: 44684544
Equivalent to 2 /8s, 169 /16s and 213 /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, 131072-153913
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: 7310
Total ARIN prefixes after maximum aggregation: 4146
ARIN Deaggregation factor: 1.76
Prefixes being announced from the ARIN address blocks: 7329
Unique aggregates announced from the ARIN address blocks: 4616
ARIN Region origin ASes present in the Internet Routing Table: 1175
ARIN Prefixes per ASN: 6.24
ARIN Region origin ASes announcing only one prefix: 420
ARIN Region transit ASes present in the Internet Routing Table: 156
Average ARIN Region AS path length visible: 4.4
Max ARIN Region AS path length visible: 14
Number of ARIN region 32-bit ASNs visible in the Routing Table: 189
Number of ARIN addresses announced to Internet: 83577344
Equivalent to 4 /8s, 251 /16s and 74 /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, 393216-401308
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, 47/8, 48/8, 50/8, 52/8, 53/8,
54/8, 55/8, 56/8, 57/8, 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: 931
Total RIPE prefixes after maximum aggregation: 652
RIPE Deaggregation factor: 1.43
Prefixes being announced from the RIPE address blocks: 925
Unique aggregates announced from the RIPE address blocks: 669
RIPE Region origin ASes present in the Internet Routing Table: 202
RIPE Prefixes per ASN: 4.58
RIPE Region origin ASes announcing only one prefix: 89
RIPE Region transit ASes present in the Internet Routing Table: 30
Average RIPE Region AS path length visible: 4.3
Max RIPE Region AS path length visible: 14
Number of RIPE region 32-bit ASNs visible in the Routing Table: 29
Number of RIPE addresses announced to Internet: 12926976
Equivalent to 0 /8s, 197 /16s and 64 /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,
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: 1382
Total LACNIC prefixes after maximum aggregation: 567
LACNIC Deaggregation factor: 2.44
Prefixes being announced from the LACNIC address blocks: 1380
Unique aggregates announced from the LACNIC address blocks: 764
LACNIC Region origin ASes present in the Internet Routing Table: 164
LACNIC Prefixes per ASN: 8.41
LACNIC Region origin ASes announcing only one prefix: 60
LACNIC Region transit ASes present in the Internet Routing Table: 26
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 13
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 68
Number of LACNIC addresses announced to Internet: 4205056
Equivalent to 0 /8s, 64 /16s and 42 /24s
LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
61440-61951, 64099-64197, 262144-273820 + 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: 1027
Total AfriNIC prefixes after maximum aggregation: 147
AfriNIC Deaggregation factor: 6.99
Prefixes being announced from the AfriNIC address blocks: 1027
Unique aggregates announced from the AfriNIC address blocks: 193
AfriNIC Region origin ASes present in the Internet Routing Table: 27
AfriNIC Prefixes per ASN: 38.04
AfriNIC Region origin ASes announcing only one prefix: 10
AfriNIC Region transit ASes present in the Internet Routing Table: 6
Average AfriNIC Region AS path length visible: 3.7
Max AfriNIC Region AS path length visible: 6
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 10
Number of AfriNIC addresses announced to Internet: 2442752
Equivalent to 0 /8s, 37 /16s and 70 /24s
AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers
AfriNIC Address Blocks 41/8, 45/8, 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
2907 591 2162 464 SINET-AS Research Organization of Infor
1237 192 74 142 KREONET-AS-KR KISTI, KR
58647 182 18 2 KAGAWAU-AS Kagawa University, JP
7575 173 329 116 AARNET-AS-AP Australian Academic and Re
55824 129 19 19 NKN-CORE-NW NKN Core Network, IN
4538 113 4176 70 ERX-CERNET-BKB China Education and Rese
4762 71 4 1 MAHIDOL-BORDER-AS Mahidol University, T
4621 70 37 10 UNINET-AS-AP UNINET-, TH
9411 66 16 2 NONTRINET-AS-AP Kasetsart University, T
23570 59 5 11 INCHEON-AS-KR UNIVERSITY OF INCHEON, KR
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
376 201 162 151 RISQ-AS, CA
5786 198 16 1 UPRENET, PR
2152 144 507 93 CSUNET-NW, US
18558 141 18 4 NETBLK-RCOEK, US
81 126 521 30 NCREN, US
23024 106 7 27 OCDE, US
2920 102 34 7 LACOE, US
1736 79 16 1 MU-AS, US
21976 79 51 18 NJEDGE-NET, US
237 72 527 44 MERIT-AS-14, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8895 134 24 5 ISU Internet Services Unit ISU, SA
1103 95 1503 83 SURFNET-NL SURFnet, The Netherlands, NL
3267 77 44 68 RUNNET, RU
1653 50 151 47 SUNET SUNET Swedish University Network,
1741 39 149 18 FUNETAS, FI
3218 21 4 18 COSMOS-3218-AS AS-COSMOS root, RU
8674 16 2 11 NETNOD-IX Netnod AB, SE
1880 14 1 7 STUPI, SE
224 13 256 13 UNINETT UNINETT, The Norwegian Universi
1101 12 465 12 IP-EEND-AS IP-EEND BV, NL
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
28391 154 10 67 Universidad Juarez Autonoma de Tabasco,
1916 149 176 42 Rede Nacional de Ensino e Pesquisa, BR
11340 104 24 49 Red Universitaria Nacional, CL
271640 68 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR
4270 49 16 2 Red de Interconexion Universitaria, AR
19611 48 17 2 Associacao Antonio Vieira - Unisinos, B
2715 44 99 34 Fundacao Carlos Chagas Filho de Amparo
61468 43 3 14 CEDIA, EC
28614 38 2 2 Fundacao Universidade Regional de Blume
1251 35 32 25 FUNDACAO DE AMPARO A PESQUISA DO ESTADO
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
2018 371 319 71 TENET-1, ZA
36914 307 82 3 KENET-AS, KE
327687 158 28 3 RENU, UG
8094 47 48 18 PUKNET, ZA
327700 44 16 1 MoRENet, MZ
6879 24 2 9 ENSTINET-, EG
37501 11 49 6 UOFS, ZA
37654 11 1 6 RwEdNet-AS, RW
37215 9 8 1 MAREN, MW
36982 8 33 8 UCT, ZA
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
2907 591 2162 464 SINET-AS Research Organization of Infor
2018 371 319 71 TENET-1, ZA
36914 307 82 3 KENET-AS, KE
376 201 162 151 RISQ-AS, CA
5786 198 16 1 UPRENET, PR
1237 192 74 142 KREONET-AS-KR KISTI, KR
58647 182 18 2 KAGAWAU-AS Kagawa University, JP
7575 173 329 116 AARNET-AS-AP Australian Academic and Re
327687 158 28 3 RENU, UG
28391 154 10 67 Universidad Juarez Autonoma de Tabasco,
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
36914 307 304 KENET-AS, KE
2018 371 300 TENET-1, ZA
5786 198 197 UPRENET, PR
58647 182 180 KAGAWAU-AS Kagawa University, JP
327687 158 155 RENU, UG
18558 141 137 NETBLK-RCOEK, US
8895 134 129 ISU Internet Services Unit ISU, SA
55824 129 110 NKN-CORE-NW NKN Core Network, IN
1916 149 107 Rede Nacional de Ensino e Pesquisa, BR
81 126 96 NCREN, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Net Originated Transit AS Transit AS Name
11570 UNALLOCATED 63.225.1.0/24 40498 ABQG, US
394607 UNALLOCATED 104.249.65.0/24 23024 OCDE, US
11570 UNALLOCATED 192.94.216.0/24 40498 ABQG, US
11570 UNALLOCATED 192.207.226.0/24 40498 ABQG, US
11570 UNALLOCATED 198.59.106.0/24 40498 ABQG, US
11570 UNALLOCATED 198.59.107.0/24 40498 ABQG, US
11570 UNALLOCATED 198.59.108.0/24 40498 ABQG, US
11570 UNALLOCATED 198.59.188.0/24 40498 ABQG, US
11570 UNALLOCATED 198.59.189.0/24 40498 ABQG, US
11570 UNALLOCATED 198.59.190.0/24 40498 ABQG, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-badAS
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
192.31.196.0/24 Origin: 112 RESERVED, ZZ
192.31.196.0/24 Transit: 7500 M-ROOT-DNS WIDE Project, JP
Complete listing at https://bgp.nsrc.org/REN/CERNET/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 /8:0 /9:1 /10:1 /11:1 /12:9
/13:17 /14:26 /15:82 /16:1376 /17:352 /18:388
/19:454 /20:668 /21:604 /22:1125 /23:1108 /24:8349
/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
36914 296 307 KENET-AS, KE
8895 129 134 ISU Internet Services Unit ISU, SA
23024 52 106 OCDE, US
32440 38 62 LONI, US
327700 38 44 MoRENet, MZ
3267 35 77 RUNNET, RU
28614 32 38 Fundacao Universidade Regional de Blumenau, BR
46115 32 35 LUTHER, US
25977 30 44 HCCS, US
27609 29 45 USC-UNIVERSITY-HOSPITAL, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:2 8:2 12:1 14:89 23:5 24:3
35:2 38:8 40:1 41:116 44:4 45:37
47:1 49:9 50:1 52:1 59:18 61:3
62:4 63:33 64:42 65:1 66:45 67:41
68:10 69:17 70:2 71:1 72:7 74:48
76:41 77:8 80:3 81:1 82:3 83:1
84:5 85:19 86:4 87:1 89:2 91:16
92:2 93:1 96:5 97:1 98:2 102:28
103:262 104:73 108:8 109:6 111:16 114:24
116:8 117:61 118:32 121:18 122:8 123:8
125:2 128:83 129:33 130:84 131:58 132:59
133:157 134:102 136:197 137:131 138:57 139:5
140:34 141:3 142:39 143:21 144:23 146:129
147:51 148:188 149:12 150:43 151:10 152:133
153:2 154:29 155:63 156:66 157:18 158:34
159:17 160:30 161:13 162:19 163:80 164:14
165:47 166:1 167:13 168:118 169:7 170:90
171:1 172:3 173:7 175:25 176:8 177:6
179:12 180:14 181:1 182:1 184:2 185:14
186:3 187:17 188:4 189:3 190:17 191:13
192:894 193:36 194:56 195:28 196:189 197:225
198:421 199:234 200:273 201:37 202:526 203:413
204:343 205:125 206:176 207:141 208:72 209:110
210:119 211:14 212:120 213:2 216:82 218:3
219:5 220:17 222:1
End of report
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